viper sputter!

Vector88

Vector88

New member
Joined
Aug 14, 2007
Messages
298
Age
36
Location
Labrador, CANADA
i am havin some issues with my 04 viper mountain. sputters real bad when ridin at low speeds or riding on the trail. i have cleaned the carbs, fuel pump, powervalves are good and adjusted to 2.5mm play. dont know what else to check. i also hear a ringin sound coming from under the hood. dont know where it is comin from exactly. only one ever have this problem?
 
reed valves looked good but they have gaps that are stuck off about a mm. ill try switching them over and see if i have the same problem.
 
rx-1mountain said:
reed valves looked good but they have gaps that are stuck off about a mm. ill try switching them over and see if i have the same problem.
Click to expand...

1mm = .040", which is way to much. .020"-.025" should be the limit.
 
yeah i checked the reeds and i swaped them with the boyesen reed pedals. sounds better then before but now theres an annoying ringing sound when i revs the motor up. sounds like a spring or something but its real annoying and i hate it lol. anyone ever hear that sound from their viper before?
 
mine does a little rattle/ring @ idle to like 4500 and i tracked it down to a stupid exhaust spring.

maybe try a little silicone on the springs?
 
yeah i found out that it was my starter making the ringing noise. but my machine still has that terrible sputter. its perfect when im over 6500-8500 rpm but when its around 5000-6500 rpm it has a terrible sputter. i hate playing with the throttle to get the sputter away for about 2 seconds. anyone know whats going on and what i can check? carbs are clean, fuel pump is clean, reed valves are good, powervalves are not sticky and are adjusted to 2.5mm. i do find the sled is a bit harder on gas then before but cant find the problem. any ideas what could be wrong?
 
Is your float bowl height within spec.. Or the plastic washer around the main jet not pulled down to the proper position..
 
Last edited:
Had a problem with my ski-doo once,, Idled and ran rough, but wide open was fine,, ended up being a bad spark plug cap..
 
i have broke my tps sensor but i fixed it with superglue and a soitering gun. worked fine and the way its acting now was before the sensor was broken. anyone think it maybe my spark plug cap?
 
You must log in or register to reply here.


Back
Top