Before I start shooting in the dark, I'd like some pointers on basic things to check or if you've had this issue, what fixed it.
Sled has ran great for the few years that I have owned it and ran just fine on an early season 25 mile test run this year. Loaded up and headed North (Wisconsin) for the weekend. First day of our trip (115 miles), sled won't idle or at least barely idles enough to stay running. Had to give the idle set screw about 10 cranks to get it to idle around 1200 rpm. Very gas/exhaust fumey when sitting still, using 25-30% more gas than expected/compared to other sleds. Plugs were pretty oily so I checked the oil pump and found it to be sticking slightly open (1/8" past index mark), fixed that and replaced plugs. Checked choke plungers and cable operation and all seem to be working just fine, lubed plungers anyway and checked to make sure cable not adjusted too tight possibly holding choke slightly on.
Not that it has anything to do with the problem but right before the 25 mile test run, I removed the Mystik full syn oil and filled with Amsoil Interceptor.
Thanks in advance for your thoughts!
EDIT: Another note to consider...both plugs were equally, really black and wet. Would that more or less rule out seats?? Would one bad needle/seat cause a wet, black plug on just that side?? Since they were equally black and wet that would mean they are getting equal fuel....fuel pump leaking into crank??
Sled has ran great for the few years that I have owned it and ran just fine on an early season 25 mile test run this year. Loaded up and headed North (Wisconsin) for the weekend. First day of our trip (115 miles), sled won't idle or at least barely idles enough to stay running. Had to give the idle set screw about 10 cranks to get it to idle around 1200 rpm. Very gas/exhaust fumey when sitting still, using 25-30% more gas than expected/compared to other sleds. Plugs were pretty oily so I checked the oil pump and found it to be sticking slightly open (1/8" past index mark), fixed that and replaced plugs. Checked choke plungers and cable operation and all seem to be working just fine, lubed plungers anyway and checked to make sure cable not adjusted too tight possibly holding choke slightly on.
Not that it has anything to do with the problem but right before the 25 mile test run, I removed the Mystik full syn oil and filled with Amsoil Interceptor.
Thanks in advance for your thoughts!
EDIT: Another note to consider...both plugs were equally, really black and wet. Would that more or less rule out seats?? Would one bad needle/seat cause a wet, black plug on just that side?? Since they were equally black and wet that would mean they are getting equal fuel....fuel pump leaking into crank??
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