twomorestrokes
TY 4 Stroke God
Yeah, what did you find out? My pick is still to clean the carbs thoroughly paying attention to the pilots and needle/ seats, and put a set of plugs in it. Pretty common problems on these sleds.
I haven't done anything further but will this weekend.
Cameron - what sort of seal are you referring to?
Cameron - what sort of seal are you referring to?
Here is what I tried this past weekend;
Plugs - nice colour and even across all plugs
Coil resistance - primary and seconday both within spec
Carb - starter plungers cleaned (missed these the first time around)
Still need to keep the throttle slightly open during warm-up to keep it running. Seems to need to come off the choke sooner though. It hasn't been overly cold lately so I imagine it will be worse in those conditions.
Plugs - nice colour and even across all plugs
Coil resistance - primary and seconday both within spec
Carb - starter plungers cleaned (missed these the first time around)
Still need to keep the throttle slightly open during warm-up to keep it running. Seems to need to come off the choke sooner though. It hasn't been overly cold lately so I imagine it will be worse in those conditions.
SnofishersBuddy
Veteran
Bad plug, plugged pilot jet, valves out of spec.
The choke should tell you if it is in the carbs. If your cleaning the pilot jets compressed air isn't good enough anymore. Soak them in combustion chamber cleaner and then hit them.
The choke should tell you if it is in the carbs. If your cleaning the pilot jets compressed air isn't good enough anymore. Soak them in combustion chamber cleaner and then hit them.
When warm, is your Idle RPM in spec.?
Mine will dop down to 1000RPM's when the light goes off but after a short time it will be at 1600 or so when completely warm....
I think these motors are cold blooded and evn though the warm-up light goes off, the engine is still way below operating temp.
Mine will dop down to 1000RPM's when the light goes off but after a short time it will be at 1600 or so when completely warm....
I think these motors are cold blooded and evn though the warm-up light goes off, the engine is still way below operating temp.
twomorestrokes
TY 4 Stroke God
Yes, they are naturally cold blooded due to the cam profiles.
It will not idle cold by itself. When hot it idles around 1300. I was pretty thorough with the carbs so I don't think its that.
I'm beginning to believe the valve clearance needs to be checked. I looked in the service manual and adjusting it looks pretty involved.
I'm beginning to believe the valve clearance needs to be checked. I looked in the service manual and adjusting it looks pretty involved.
try raising your idle to 1600 rpm's
