[ewolles]

i have a 2007 polaris switchback 600 cfi and it seems to missfire i tried new plugs but didnt help, tried running it with 1 pistin and it ran but not with the other is it scored?? it idles at 1000 rpms is that too slow??
thanks

 

[Dragonryder]

yeah that low...it should be idling between 1500-1900 when warm..turn up the rpm and see if that works

 

[ewolles]

it sounds like it has a fowled plug at idle but once you get to higher rpm its normal

 

[Switchbackrick]

i have a 2007 polaris switchback 600 cfi and it seems to missfire i tried new plugs but didnt help, tried running it with 1 pistin and it ran but not with the other is it scored?? it idles at 1000 rpms is that too slow??
thanks

You have to set your TPS. you should be idling around 2000 rpm

 

[ewolles]

i tested compression and 1 was 90 psi and the other was 120 psi how much should they be what would be wrong with it??

 

[bj.hardy]

not sure on initial Psi, but you shouldn't have that big of a difference.. id look for either bad gaskets or a scored piston... sorry to say... my 02 edge came with 155 psi, and im at 150 right now 5700+ miles...

 

[Switchbackrick]

i tested compression and 1 was 90 psi and the other was 120 psi how much should they be what would be wrong with it??

They say 10% differance between cylinders...so check it out, sounds like time for rebuild.

 

[polaris37]

does the bulletin related to oil pump and throttle body adjustments apply to your and/or have they been completed?---could be cause,maybe?? check dealer.