The Chevrolet Spark New is one of the most popular subcompact cars on the market today. It boasts a stylish exterior, a comfortable interior, and most importantly, excellent fuel e...New Taotao 125cc atv won't turn over. Have replaced battery and starter button. Last time riding it gave a loud pop and hasn't started since. Checked wiring, fuses, etc. It's only a month old and needs constant repairs after each ride. But now I'm stumped. Any help would be appreciated.Jul 25, 2018 · This video will show you how to possibly get your scooter back up and running if you're getting gas, have spark and compression.Hey Guys! Want to know why I ... The jumper wire to the fuel pump is not a bad idea, but it might be easier just to attach your volt meter to the fuel pump. Get the engine running by squirting starting fluid into the throttle body. Then, stop squirting starting fluid and watch the volt meter as the engine sputters and dies.Apr 5, 2018 · Got it out this winter, rebuilt carb, new spark plug, and fresh air filter. The machine is getting spark, and i checked the fuel pump and that seems to be working as it should because there is fuel in the carb bowl, but it will not start. Crank and crank with a battery jumper on it and it wont fire. Tried to pull start, same results. 1) Crank engine over several times to start. Remove spark plug. If plug is wet and smells like gas then it is getting fuel. Put spark plug back into spark plug cap and lay spark end along side bolt or part of unpainted head making contact and crank over engine as if to start. If no spark then is electrical problem.update it actually did try to start a little bit but still didnt quite make it. and now its running fine lol i dont know what the heck it was doing. but it started running rough again and i noticed that lil vacuum thing under the throttle linkage was staying sucked in. im sure that this is a vacuum issue now just dont know where to start with it.Sometimes, due to some issues, your Chinese ATV cranks but won’t start. Now, let’s try to find out those issues and follow these tips for your dinli ATV …To start out I bought a cheap Warrior that is in great shape physically wise. It didn't start when I bought it. So I now have checked that I have a good blue spark, compression, and fuel. It doesn't even try to start with starting fluid. My compression is HIGH at 150 psi, so I can assume someone has put a high compression piston in I guess.Shut it off, tried to start it again and it started and died. Now I don't get anything. Pretty sure it's getting gas, the plug comes out wet and sometimes after pulling for a while some will dump out of the cylinder when I turn it upside down. It has spark, maybe a little weak, not sure, so that's my main guess, but no idea what is causing it.97 4.3L wont start...has fuel & spark. Ok guys, here is a what I would consider a mind f***. I have a 97 S-10 4x4 with 4.3/auto. I had a little issue this morning when leaving for work. I started the truck up, let it run for a few minutes and had to shut it off to run back in the house for a minute. Came back 30 seconds later and it started ...Travis. Pull the spark plug out , and put the wire back on it, ground the plug to something metal, engine head, whatever, and crank it over, look for a spark at the electrode. Another way to check for spark is to take the plug out, put a small amount of gasoline down the plug hole, reinstall the plug and wire.2002 sportsman 500 won't fire has spark, please help. Hey I am new to the board. I have a 2002 sportsman 500 ho that won't fire up. recently started smoking so I tore it down and replaced the piston rings. Now after i put it back together I've had problems with getting it to start. I have got it to start about 3 times after kept turning the key ...214 posts · Joined 2013. #3 · Nov 6, 2014. Was the old carb doing this too? If so, then start with Shade's option 1. If not, it's the new carb, Shade's option 2. If you have an inline fuel filter (old or new doesn't matter), remove until you've fixed the problem and then optionally put a new filter back one. deepquagg. Present Riders: - 2002 ...214 posts · Joined 2013. #3 · Nov 6, 2014. Was the old carb doing this too? If so, then start with Shade's option 1. If not, it's the new carb, Shade's option 2. If you have an inline fuel filter (old or new doesn't matter), remove until you've fixed the problem and then optionally put a new filter back one. deepquagg. Present Riders: - 2002 ...Problems with the spark plugs. Engine issues. Issues with airflow. Issues with transmission. The failure of the carburetor. Problems with the clutch. Issues with warranty. In this guide, I'll dive into the heart of the matter, unveiling solutions to the ten most common Hisun UTV problems that riders often encounter.If they're clogged, the engine won't get enough fuel to start. To clean and unclog fuel injectors: Locate the fuel injector, usually found on the intake manifold or on/around the cylinder head. Remove the fuel injector from the engine. Use a carb cleaner to clean the exterior of the fuel injector.Reply. Share. [deleted] • 3 yr. ago. Use flat head open case make sure timing is top dead center. 2. Reply. Share. No_Yak_7747. • 3 yr. ago. Remember 4-stroke order of …0 helpful. 1 answer. Brute force wont start getting spark checked the fuses. Put a little fuel in the carburator still wouldnt start. Try different plug then if not it then change your cdi. Jan 23, 2014 • Arctic Cat 2006 500 4x4. 0 helpful. 1 answer.Replaced battery. Oil change, coolant change, air filter clean, all fluid top off. Crank no start. No CELs. Verified fuel is getting to rails. Can smell fuel at tail pipe and spark plugs wet from fuel. Verified spark to all 6 plugs. Checking timing belt and timing Mark's are dead on.To check for the spark, turn the ignition to the ON position, remove the spark plug, and ground the hex part of the plug to bare metal on the engine. Clean up any spilled gas, spin the engine, and watch for a spark jumping across the gap. To test gas flow, remove the carburetor's fuel line, hold it over a container, and watch the flow.1 post · Joined 2010. #1 · Mar 29, 2010. Hey all i am new here and in need of help, i am working on a 94 300 4x4 and i cannot get this thing to start i will list step by step what i have done and saw on this bike... I started off by changing the plug then noticing the spark plug boot and plug were not oem so i put new ngk br8es in with a boot ...Black Smoke. Black or darker smoke is usually nothing to worry about. This happens if your ATV, for some reason, gets too much fuel, and the combustion becomes out of balance. Your engine needs a certain ratio between the amount of air and fuel it gets to function correctly. This is called the air/fuel ratio.Look around the back of the unit and see it it has a "key" and lanyard. (you may be referring to this as the "tiny key"). Clean or replace the plug. If its firing then you are not getting fuel/air. Start by pulling the fuel line off at the cut off valve, open the valve and verify flow.Air, Spark, and Fuel! These are the elements needed to run. Trouble shoot each and eliminate them as you go. Eventually you will discover the source of failu...474 posts · Joined 2010. #7 · Feb 27, 2016. Pull the plug and burn off the fuel on it with a lighter. Reinstall plug and crank with the throttle cracked about 1/3rd to ½ open. It sounds like you may be getting too much fuel. If you've got fuel, spark and compression then you should have a running engine.If you have "flickering" there, but there are no sparks, then there is a problem with the ignition coil (or with both coils). If you have no "flickering" there, then you have no signals from the ECU. The next step is to check the wiring harness between the ECU and the ignition coils. Like.It does have the remote to shut the quad down, but does not have remote start. No reverse either. Tao Tao 110cc will not crank!!! Change the sparkplug to a NKG. I bought one for my grandchild back in Dec. and it cranked and ran fine for awhile. Warranty ran out (3 months) when I took it back.This is what you do if you have spak, compression and fuel but your atv wont start. Chinese ATV 250ccLets see what's wrong with this ATV Won't even pop : r/ATV. Chinese 110cc. Has spark, fuel, compression. Won't even pop. Was working great, then over the course of the day had more and more trouble starting till it just wouldn't anymore. Even spraying starter fluid straight down the carb it won't even burp or anything. So I've popped the spark plug out and checked, it is sparking ... Here is a detailed guide on how to replace the spark plug in your 110cc or 125cc Chinese ATV: Locate the spark plug on the engine, typically positioned near the top under a rubber boot. Prior to removing the old spark plug, clean the area around it to prevent debris from contaminating the engine. Using a spark plug socket wrench, carefully ...He asked me to go through and get it starting again. I've now cleaned the carb 3 times, gas, spark plugs, everything all over again, but it will not go.-Has spark, new spark plug.-Carb is clean,-Carb is getting fuel, no obstruction from fuel line/source,-Can visibly see fuel on the spark plug after attempting to start and pulling plug.A bad on/off switch, old fuel, plugged fuel filter, clogged fuel line, dirty carburetor, plugged air filter, plugged spark arrestor, bad spark plug, or faulty ignition coil can keep a Husqvarna chainsaw from starting. Keep reading for additional reasons your chainsaw won't start. Remove the spark plug wire before beginning any repairs.Jan 19, 2021 · This makes starting difficult, especially in cold weather. Fixing this properly will result amazingly in instant starts. You’ll need a new valve cover and cam cover gasket, and two sets of feeler gauges to do this properly. You can get a top end gasket set cheap on Amazon. #4 Check your spark plug. Your stalling problem can be caused by a dirty or worn spark plug that causes an inconsistent spark. Test the spark plug and notice the color of the spark. If you have a blue spark that is strong, then the spark plug is not the issue. However, if you notice a weak orange spark, then it might be time to change your ...The way to test for no start is to try starting it for a few cranks, then take the spark plug out and see if it's got fuel on it. If it's dry, then either it's not getting fuel, or it is getting fuel but it's being burnt, which means it's trying to start. It the spark plug's wet, then you need to attach the plug to it's lead, rest the plug on a ...Problems with the spark plugs. Engine issues. Issues with airflow. Issues with transmission. The failure of the carburetor. Problems with the clutch. Issues with warranty. In this guide, I’ll dive into the heart of the matter, unveiling solutions to the ten most common Hisun UTV problems that riders often encounter.Tjakes680. 188 posts · Joined 2021. #3 · Jan 10, 2022. Have you tried to start it with pull start?.You can also try a bump start if u have a hill or another quad and a tow rope and someone willing to pull quadI would again first put a charger on battery and also chk your spark plug cap,wire and pull the plug If you have a spark plug tester ...Hi so I have an lt80 that won't start. Has spark, compression and fuel but just cranks over and over. Even with starting fluid sprayed in the carb it won't. ... The leading Suzuki ATV owner's forum community offering a wide collection of information. The site includes Technical Forums, News, Photos, Comparisons, Classifieds, Reviews, …Posted May 13, 2013. Hey guys long story short, i purchased a trx450 2008 electric start all that junk from a guy for 2500. He said starter needed work and battery. The quad push started right aWay and ran fine. I got a new battery and starter clutch kit and installed all of it. Now quad all it does is just turn over.Step 3: Access the Carburetor. Locate the carburetor on your Honda FourTrax. It is usually positioned near the engine intake manifold and is connected to the air filter housing. Depending on your model, you may need to remove some plastic covers or panels to access the carburetor.Sep 8, 2021 ... Troubleshooting a no spark China ... Dirt Bike Leaking Gas or Won't Start With New Carb? ... Chinese ATV review, how do they hold up to years of ...Checked compression and it was reading approx. 95-100 cold. Fired it up and let it idle for about 5-10 min. Checked compression again and it was approx. 118-120 warm. That being said, Still have no idea why this thing won't start cold without drowning out the crankcase after a fresh top end rebuild and crank seals.brink900 Discussion starter. 16 posts · Joined 2010. #1 · May 31, 2010. OK so I just got an 05 predator 500 from my friend and it wont start. The engine will turn over and there is spark from the plug as well. I also checked and there is compression in the motor and fuel is being delivered to the carb as well. Other then this I do not know ...To run, it must have 3 simple ingredients: 1) Spark, 2) fuel, and. 3) compression. You said you have spark. You said you added fuel (starting fluid) So, you need to check your compression. It might be time for an overhaul. H.Oct 27, 2021 · On a carbureted ATV, remove the spark-plug wire, while on a fuel-injected ATV, remove the ignition coil. To take out the spark plug, use a spark-plug removal tool. Check to see if the spark plug is dry. If so, the fuel isn’t getting to your cylinder. There is a problem either with the fuel pump or the lines between the gas tank and the carb. Dec 9, 2016 · To test spark, stick a screw driver in the spark plug boot and get it around 1/16"-1/8" from the head and if it sparks you have spark. But you want a deep blue. A light yellow or orange isn't too good. To compression get a compression test and crank over the quad for 5 seconds at wide open throttle. Jul 25, 2018 · This video will show you how to possibly get your scooter back up and running if you're getting gas, have spark and compression.Hey Guys! Want to know why I ... Fuel Tank bottom has a cup of water in it from sitting out in all weather. Water again from gas can - from sitting in back of truck all year, storm after storm, and now shared to machine. If it was a steam engine, you'd be closer to getting it running.The Ignition Coil. One of the most significant precious parts of the chainsaw to make it start is the ignition coil. If it’s broken or damaged somehow, even your brand-new chainsaw won’t start with starting fluid. It converts the low voltage into a high voltage to perform the electric spark. Use an ignition coil tester or a multimeter and ...If you are getting spark of any kind, then the sensor is working. As far as how hot the spark is, that relates more to the coil and power output stage. Check for the smell of raw fuel in the exhaust. If youre getting enough, you should be able to smell it. Pull out the plug (s) and make sure its not soaked.Inspect the Spark Plug: Remove the spark plug and look for any signs of damage or fouling. Check the Fuel System: Make sure there’s gas in the tank, the fuel line isn’t clogged, and the carburetor is clean and properly adjusted. Examine the Ignition System: Check the ignition switch, ignition coil, and other related parts for any signs of ...The Ford Econoline van is a popular model made by the Ford Motor Company typically used by businesses to haul equipment. The Econoline van uses a standard fuel pump delivery system...brink900 Discussion starter. 16 posts · Joined 2010. #1 · May 31, 2010. OK so I just got an 05 predator 500 from my friend and it wont start. The engine will turn over and there is spark from the plug as well. I also checked and there is compression in the motor and fuel is being delivered to the carb as well. Other then this I do not know ...Replaced battery. Oil change, coolant change, air filter clean, all fluid top off. Crank no start. No CELs. Verified fuel is getting to rails. Can smell fuel at tail pipe and spark plugs wet from fuel. Verified spark to all 6 plugs. Checking timing belt and timing Mark's are dead on.301 Answers. SOURCE: 110cc atv. There are three things required for combustion to occur: Fuel, compression, and a spark (at the right time). One, or more, of these is/are missing. If the bike has been in storage for more than about a year, then you can bet that the carburetor is plugged up. It will need to be completely disassembled and cleaned.Had the day off to look at the bayou. Poured less than an once of oil in the cylinder to trie help the compression. I turned it over a few revolutions and let it sit for 2 hrs to do it thing. Went to try to start it and it still wouldn't fire, although it did have more exhaust sound than before.To start out I bought a cheap Warrior that is in great shape physically wise. It didn't start when I bought it. So I now have checked that I have a good blue spark, compression, and fuel. It doesn't even try to start with starting fluid. My compression is HIGH at 150 psi, so I can assume someone has put a high compression piston in I guess.Carriers can easily mask the origins of Russian oil shipped to sanctions-averse buyers, sparking concern the products are entering Europe, per the Guardian. Jump to Oil shippers ar...Chinese quad has spark and cranks but doesn’t fire up! Would could it be? : r/ATV. Chinese quad has spark and cranks but doesn’t fire up! Would could it be? Compression, spark timing, bad plug, not a "good" spark, Fuel delivery issues, bad carb gaskets, and the moon needs to be waxing for them to run. Fuel quality or spark plug foul?25043 posts · Joined 2014. #4 · May 24, 2020. I'm still confused - there is no voltage to the electric choke until the engine is turning over (cranking or running) and the voltage is directly from the alternator so can be as high as 45 to 90 volts with the engine running in the higher rpm's. So anyway, the choke is not the problem as the ...In this video, I show how to diagnose and fix a Kawasaki Bayou 300 that will not start. The same method should work for any carbureted 4-wheeler or dirtbike...3) Diaphragm in the regulator ruptures, leaking unmetered fuel into the intake. This is usually most evident on warm starts rather than cold starts, because the excess fuel "floods" the engine. After sufficient time has passed, the excess fuel dissipates, which usually means normal cold starts.Plug wire on securely. Not pulling starter with enough oomph – It should be noted an ATV engine needs to turn over at approx. 400 RPM in order to build sufficient voltage to create a strong bright spark at the spark plug. Less RPM means a weak spark and that will make starting the engine a challenge.I have a 49cc 2cycle engine that I replaced the carb on. It has fresh gas and appears to have a spark. I can't get it to fire even if I put some starter fluid in the air intake. It seems to have compression. The motor has sat for a few years in a garage, it did have old gas that I clean out of the tank.1. Problems with Starting. If there is enough fuel in the Coolster ATV but still it will not start, then there might be something wrong with the ignition system, battery, and the spark plugs. If these parts are faulty, replace them or repair them. In most cases, replacing faulty or rusted spark plugs fixes the problem.Increased Offer! Hilton No Annual Fee 70K + Free Night Cert Offer! We are constantly coming across interesting travel and finance related articles that we love to share with our re...2402 posts · Joined 2010. #2 · Feb 11, 2014. you can put starter fluid through the airbox but a better way is to put a bit of gas in the plug hole. While you have the plug out check to see if you have a solid blue spark. Motors need gas, spark, compression and air. Air is free. 12 Starfire Blue Sportsman 850XPHO LE EPS: - Fender guards ...There is no specific time to change spark plug wires but an ideal time would be when fuel is being left unburned because there is not enough voltage to burn the fuel. As spark plug...Rob R Discussion starter. 6 posts · Joined 2022. #1 · Jul 17, 2022. Hi everyone. I recently acquired a 2004 vw beetle convertible. The engine cranks over and has spark & fuel but will not start. What could the problem be? The engine is a 2.0 liter. It is also showing no fault codes.My 570 didn't start yesterday. I pulled the plug and it looked fine. About a week ago when I started this machine it ran rough for the first 10-15 seconds and then was fine and then yesterday nothing I could not get to start. I ended up taking it to the dealer (Ball Equipment in Richmond MI) 1 1. 570 Sportsman Touring.Here's a quick chart to show you all the possible problems and fixes for a Stihl chainsaw that won't start. Possible Causes. Troubleshooting Steps. Empty Fuel Tank or Stale Fuel. Refill or Replace the Old Fuel. Dirty Fuel Filter. Clean or Replace Fuel Filter. Clogged Air Filter. Clean or Replace Air Filter.To start a warm engine: Depending on the choke style used, pull the carburetor choke lever all the way down or push the choke lever by the handlebars all the way in. 7. Press and Hold the Starter Button Until the Engine Starts. The rider should sit on the ATV before attempting to start the engine.Hi all: I have a 2002 Magnum 500 RMK. I just had the car rebuilt by a Polaris dealer. It runs great. Idles perfect accelerates excellent, perfect. That is, until it dies. It acts as if it runs out of gas, OR the spark fails. I added a new fuel filter, fuel pump, and fresh gas. I saw on the Polaris site that the spark plug cap could be bought ...i have a 110 chinese atv it has spark 90psi of compressin and fuel. wont start. i give battery power at the red wire on the cdi and it will run. not well but will. i did this because my understanding is a cdi must have 10.5v min to work. it is a 4 wire cdi and all the wires trace to the stater. im confused on this. i think im increasing the ...1. Problems with Starting. If there is enough fuel in the Coolster ATV but still it will not start, then there might be something wrong with the ignition system, battery, and the spark plugs. If these parts are faulty, replace them or repair them. In most cases, replacing faulty or rusted spark plugs fixes the problem.A black spark plug means your engine is running rich. Rich means your engine is getting too much gas in relation to the amount of air (oxygen) it’s receiving. Your ATV engine likes to run with 14.7 parts air (oxygen) to one part gas, it’s called the AFR or Air Fuel Ratio. Your ATV’s carburetor is responsible for mixing and maintaining the ...If your engine’s not getting any spark, or getting weak spark, it won’t start at all. The engine will turn over, but will never be able to ignite the fuel and get running. Don’t worry, there’s a quick and easy way to check for spark. Just take the spark plug out of the engine and plug it back into the spark plug wire. Put the spark plug ...To run, it must have 3 simple ingredients: 1) Spark, 2) fuel, and. 3) compression. You said you have spark. You said you added fuel (starting fluid) So, you need to check your compression. It might be time for an overhaul. H.Inspect the fuel pump for wear and loose or cracked hoses. If there is no vacuum in the hose, you’re carb won’t get any fuel. This is most likely caused by a crack in the vacuum fuel lines or a bad fuel pump. You may find it easier to just replace the fuel pump all together since they aren’t usually very expensive.If it has been sitting, you need to pull off the carb and clean it. The jets, specifically the pilot jet can become plugged from bad fuel, and create havoc. Cleaning these little carbs is easy, just take your time. Make sure the air filter is clean and unobstructed. And last but not least, check the wiring.Lets see what's wrong with this ATVThis may be due to a dirty air filter, bad spark plug, plugged fuel filter, clogged fuel line, bad fuel pump, dirty carburetor, weak battery, faulty starter solenoid, or bad ignition switch. Keep reading for additional items that can cause your starting issue. Always remove the ignition key and spark plug wires prior to performing any work on ...
When I push the start button, the crank turns but it fails to fire. In fact I don't hear any firing at all as if the sparkplug isnt working at all. Steps I have taken so far to troubleshoot: 1. Fuel valve is open. 2. Has fuel in the tank. 3. Brake is applied.. Leslie abramson attorney
Checked the valve clearance. 7. Checked the decompressor, +0,50mm clearance, 50 - 53 PSI. 8. Dismantle the whole bottom of carburator, checked all jets, did use comprest air to blow all the channels. 9. Tried to poor a little fuel in the spark hole, no reaction at all. 10. Gasoline is new.T. torieilers Discussion starter. 1 post · Joined 2020. #1 · May 5, 2020. My 2017 polaris sportsman 450 cranks but won't start. have changed the battery, check the spark plug it's fine, the fuel line is sending the right amount of fuel and the air intake is sucking in fine still as well.1584 posts · Joined 2010. #7 · Aug 27, 2011. 5 wks shouldn't be enough to warrant a carb cleaning job...but if you wanna try the starting fluid, take off the seat, remove the cover from the air intake box, and just spray the air filter and quickly turn the engine over with your starter button. also, check your fuel valve on the side of the ...If you have a carburetor, the most common fix is replacing the needle valve and seat. If you notice your spark plug is dry after trying to start the engine, that is a good indicator that you're not getting fuel to the engine. Start by spraying some carb cleaner or ether into the carb or injectors and then try to start up the engine.Feb 2, 2017 · The jumper wire to the fuel pump is not a bad idea, but it might be easier just to attach your volt meter to the fuel pump. Get the engine running by squirting starting fluid into the throttle body. Then, stop squirting starting fluid and watch the volt meter as the engine sputters and dies. A Cub Cadet lawn mower won't start when the engine isn't getting good air, fuel, compression, and spark due to a bad air filter, dirty carburetor, bad spark plug, weak battery, faulty starter solenoid, and more. The article addresses lawn tractors, riding mowers, and zero-turns. So, whether you are working on an XT1, XT2, SLT1550, Ultima XT ...ATV Troubleshooting: ATV Has Spark and Fuel but Will Not Start. Your ATV won't start. It is a frustrating situation that many ATV owners and riders will face. Since this is a troubleshooting guide, we will begin with the very basics. The first place to look is the fuel gauge to ensure sufficient gas, followed by testing for a spark.He asked me to go through and get it starting again. I've now cleaned the carb 3 times, gas, spark plugs, everything all over again, but it will not go.-Has spark, new spark plug.-Carb is clean,-Carb is getting fuel, no obstruction from fuel line/source,-Can visibly see fuel on the spark plug after attempting to start and pulling plug.Inspecting the Carburetor. Sputtering or Stalling: If your ATV sputters or stalls during operation, it could be a sign of fuel delivery problems. Difficulty Starting: If your quad struggles to start or doesn’t start, the fuel might not reach the engine. Locate the Carburetor: If your ATV has a carburetor, locate it.So here is the problem. I have 2 ds90 4 strokes 2005. The one that is giving me problem will not start. It has fuel and air ( i cleaned the carb). it even has spark but It is not as hot a spark as the running ds90. I have switched over the key switch. cdi, relay, coil and every other plug in componant from the running ds to the broke one with ...Aug 8, 2020 ... ATV Starter Issues, Diagnose and Repair a Not Cranking China ATV! ... (Pull start, Spark Plug, Coil). MarleyJax ... The Whole Fuel Priming System ...No Gas. In order for an engine to start running, the carburetor must have a supply of fuel. In many cases with small engines, there will appear to be gas when in actuality none is getting to the engine. Try rocking the engine back and forth to listen for fuel sloshing. If you have a gas canister, try filling the tank up and giving it another shot.1 post · Joined 2010. #1 · Mar 29, 2010. Hey all i am new here and in need of help, i am working on a 94 300 4x4 and i cannot get this thing to start i will list step by step what i have done and saw on this bike... I started off by changing the plug then noticing the spark plug boot and plug were not oem so i put new ngk br8es in with a boot ...There are a few potential causes for an ATV that backfires and won’t start. One possibility is that the fuel isn’t reaching the engine. This can be due to a clogged fuel filter, bad fuel pump, or faulty carburetor. Another possibility is that the spark plugs are dirty or damaged, preventing them from igniting the fuel mixture.Last week I put in a 20oz bottle Techron injector cleaner in the tank (full) along with 8oz Mystery Oil. I know I have good spark, and just rigged a fuel pressure gauge. Pressure goes to about 45 psi when the ignition is turned on, and stays up. If I could start it, I'd assume that when the manifold vacuum appears, it would drop to around 35 ...Have a helper pull start the engine; You check plug spark; If you have a spare plug to hand, check spark using it also. It's critical to ground the spark plug well, getting this wrong will lead to an incorrect diagnosis. Two outcomes are likely: 1 The spark plug works great - It emits a bright blue spark. If this is the case you'll need ...If it has been sitting, you need to pull off the carb and clean it. The jets, specifically the pilot jet can become plugged from bad fuel, and create havoc. Cleaning these little carbs is easy, just take your time. Make sure the air filter is clean and unobstructed. And last but not least, check the wiring.Last week I put in a 20oz bottle Techron injector cleaner in the tank (full) along with 8oz Mystery Oil. I know I have good spark, and just rigged a fuel pressure gauge. Pressure goes to about 45 psi when the ignition is turned on, and stays up. If I could start it, I'd assume that when the manifold vacuum appears, it would drop to around 35 ...Ortimber. You have fuel and spark, next check compression. If you have all three of those things, it should fire. A plug wire, broken internally, might work in certain positions only. Probably a long shot. Valves that are tight, potentially causing decreased compression can cause hard starting..
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