07 arctic cat 570 fan problem.. please help

tntsmallmotor · Mar 31, 2013

I have a 2007 570 fan cooled sled. just cleaned the carbs there good. seems to have great spark. idles great. just above a idle sounds like the engine misses or cuts out and then some times backfires. but if u pin it and get your rpms up seems to run good. Could it be ground, or coil, or something... compression is 140 psi on both cylinders... any hints will be great thanks

TROLLCAT · Mar 31, 2013

take the slack out of the throttle cable there should be .020 thou play on the thumb lever

tntsmallmotor · Mar 31, 2013

k thanks I will give that a try... so do u think its the carb sensors

TROLLCAT · Mar 31, 2013

tntsmallmotor said:
k thanks I will give that a try... so do u think its the carb sensors

carb sensors and throttle switch work together and when the cable is loose from wear thats when it cuts the spark off for a moment and thats where your problem is

tntsmallmotor · Apr 3, 2013

so I disconnected tss in throttle block and I still have a miss about 3000rpm but if I get it above that it runs but right around 3000 rpm it misses? does disconnectint them wires by pass the tss? thanks

TROLLCAT · Apr 3, 2013

you got new spark plugs and make sure the plug caps fit tight on the plug if not replace them

07 arctic cat 570 fan problem.. please help

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