2012 Polaris pro rmk 800

[Polaris boy]

Hey guys my 800 has 1500 miles. Still original. Compression is 120 both cylinders. Runs amazing lots of pull. When it gets warm it doesn't wanna idle... What could be the issue? Could it be the tps?


Thanks, Jeff

 

[SnowJunkie82]

Hey guys my 800 has 1500 miles. Still original. Compression is 120 both cylinders. Runs amazing lots of pull. When it gets warm it doesn't wanna idle... What could be the issue? Could it be the tps?


Thanks, Jeff

Did you do your compression test with the machine warmed up? This sure sounds like a cylinder starting to go down. A TPS problem usually causes run issues through the whole temperature range. Could also be an issue with the reeds (cracked or lifted petal), but given the history of 11/12 Polaris 800 motors I would be looking at the Pistons/cylinders.

 

[TDR]

I've had something similar happen recently. Turned out to be dirty throttle bodies. Pull the air box and give them a spray and wipe with cleaner.

 

[Polaris boy]

Ok I'll try that out, because there is times it will idle completely fine. Just gets me frustrated lol