Hi all ,

bought a 2003 trailblazer 250 project and just completed a Rick Ritter top end rebuild, approx 130-135 compression and runs great, only one main problem now. When temps drop below 32 degrees it won't start via electric start or pulling with or without choke. If I put my torpedo heater on it for 2 minutes it will start right up and run good. And once warm I have no starting problems. Please offer any advice, I have read about maybe the cold air causing a lean condition should I look at the air screw again I set it to spec at 1 turn?

Thanks!
Hoop D

 

Cold air leans the fuel mixture out plus harder to pull this mixture into the crank case.Try blocking off the intake duct with your hand when cranking. This allows more fuel,less air and should start easier. Plus if you didn't replace the crank seals when you installed the new top end,this could have something to do with the cold starting also.

 

I actually did have the dealership replace the crank seals, thanks for the response ill try choking it that way

QUOTE=old polaris tech;3227469]Cold air leans the fuel mixture out plus harder to pull this mixture into the crank case.Try blocking off the intake duct with your hand when cranking. This allows more fuel,less air and should start easier. Plus if you didn't replace the crank seals when you installed the new top end,this could have something to do with the cold starting also.[/QUOTE]