RandyJ
Master Chief Petty Officer
- Joined
- Jun 13, 2002
- Messages
- 808
At wits end!!!! I piddled with this thing the last 1/2 of last summer to no avail. It ran okay (never perfect) last summer then developed this problem after it got to where it would slow down then stall. Now it starts fine and idles smoothly, but when I accelerate it smokes like a tar kettle, sounds like it is running on one cylinder 99% of the time... the duh,duh,duh, rhythm of the engine when accelerating makes me think it is firing occassionally (maybe on one cylinder) when accelerating. I've done everything I can think of to check it out. I've swapped carbs with two other ski's, used an ohm meter to compare readings on 2 otherCDI's and coils. I've done so much checking I can't remember what I have or have not done. Compression is equal on both cylinders (110 psi). I have not checked anything under the flywheel (too hard to get to)...not sure how to check timing. If there is a rev limiter that sounds like it could be a source of the problem since it runs great at idle but will hardly pick up RPM's and smokes like crazy when I open the throttle... it may even be reducing RPM's when opening throttle.
One thing I've noticed is that choking it seems to have no effect... as if maybe it's choked already or sucking air somewhere else... seems like a clue since it's smoking like crazy alot of the time. This particular ski has the oil injection lines going into the reed block or carburator base rather than as some, at the top of the carb. I'm wondering if maybe it has a leak between crankcase and carb (or in crank case...no smoke getting in engine compartment tho')
HISTORY of this ski: Bought a pair of them 4 years or so ago. This one sat out back with the starter torn apart. I had to buy a reduction gear (we call it a bendix/starter drive gear). It started okay most of the time. The starter froze up and I got a used starter off of ebay that cured the problem. Just as I got the starter problem fixed it started this slowing down thingy then got to just not accelerating at all....smoking like crazy. I've put a kit in the carb, swapped carbs with good running ski's, did the clean plug routine, check compression.... everything I know of.... any ideas PLEASE?
One thing I've noticed is that choking it seems to have no effect... as if maybe it's choked already or sucking air somewhere else... seems like a clue since it's smoking like crazy alot of the time. This particular ski has the oil injection lines going into the reed block or carburator base rather than as some, at the top of the carb. I'm wondering if maybe it has a leak between crankcase and carb (or in crank case...no smoke getting in engine compartment tho')
HISTORY of this ski: Bought a pair of them 4 years or so ago. This one sat out back with the starter torn apart. I had to buy a reduction gear (we call it a bendix/starter drive gear). It started okay most of the time. The starter froze up and I got a used starter off of ebay that cured the problem. Just as I got the starter problem fixed it started this slowing down thingy then got to just not accelerating at all....smoking like crazy. I've put a kit in the carb, swapped carbs with good running ski's, did the clean plug routine, check compression.... everything I know of.... any ideas PLEASE?
