View Full Version : snowmachine help needed

12-29-2008, 01:20 PM
1997 indy 440 l/c

after about 15 minutes of running it seems like you lose a cylinder.. the idle drops toa bout 800 rpm from 2000, and if you pin it, it'll only rev to about 4000-4500rpm and odesn't move at all.

if you change the spark plugs, it'll run great for about 10 minutes then the same problem.


what could cause this?

we tried running a colder plug, but still the same thing

Barry Morris
12-29-2008, 01:54 PM
If I had an 11 year old sled in reasonable shape, I'd just go get a set of jugs and pistons and put them in. No guess work, and not a waste of bucks, just maintanence. Get it tuned up too.
End of problem, and more years of use.