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Similar Forum Topics
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By quadcrazy
If you are a new member, why not introduce yourself? This community thrives and grows with you and all our current members! We all want this community to grow and encourage new member registrations. That being said please help out QuadCRAZY by inviting other atv'ers to the community.
QUADCRAZY NEEDS YOU!
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By BillR94
I picked up this ATV that had no spark. The previous owner said he was driving it and it died and would not start. He discovered it had no spark. He replaced the CDI and the coil with no luck. He got tired of it and I bought it. I replaced the stater and now it has strong spark. Now, it starts for a second or two then dies. It will not stay running. I have checked the timing and it is spot on. The valves are adjusted correctly. I see no warn issues with the cam. I put the original CDI and coil back on it. Same problem exists. Compression is at 65 psi (has decompression mechanism),
I took off the muffler in case the issue was clogged pipes. No change. I replaced the spark plug. No change. The carb was an aftermarket so I put a Niche carb on with no change. I bypassed the fuel pump and that did nothing to solve the problem.
I don't know if this is a carb issue or an ignition issue. I am looking around locally for an OEM carb to try out but not sure that will fix the problem.
Can anyone help me solve this problem. I am running out of ideas.
Thank you for your time
Bill
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By Banshee898
2014 Honda Rancher TRX420TM1: Unit starts right up, once it warms up it stalls and more difficult to start but once it does start it won't stay running. I have replaced the fuel assembly, IACV, O2 sensor and fuel injector. There are no active DTC codes. Disconnecting fuel line at injector and turning on key there is a steady stream of fuel. Plug looks good did not see crack in ceramic. Is there any way to test the ignition coil?
Thanks for any help.
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By WyattLemke25
Working on a 2016 Sportsman 570 and it has a new battery and spark plug. No codes, fuses all look good. It cranks for a while and when it starts it will only run for a few seconds before stalling. At one point it was running at 3000 rpm with no throttle input, then it dies. Not sure where to look besides messing with the throttle cable, so suggestions are appreciated, Thanks.
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By prdicon
My 2018 Polaris Sportsman engine operation feels jumpy when I ride. It happens when I am trying to keep constant speed and throttle is fixed position. ATV will misfire and feel jumpy. Not smooth..
Idle is good more or less. Will always crank up on first attempt.
I am thinking to start using carbon cleaner.
Any different between the Polaris carbon clean and Seafoam?
Polaris carbon clean
https://a.co/d/ee529C9
Seafoam
https://a.co/d/4h04dKk
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