Quote:
Originally Posted by DistilledMetal
Well she ran today. It only started when we blocked the air intake but after it warmed up she ran fine and we put the air filter back on and it ran perfect. After it got cold it didn't want to start anymore. Any ideas? .
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you've got a faulty fuel enrichener. It the black plastic case mounted on the side of the carburetor. In most carbs the choke closes off the air flow to richen the mixture for cold starts. With this CV carb, rather than choking the air, there is a independent fuel circuit thats allow extra fuel to richen the mixture for cold starts. The enrichener is a needle and seat valve that is activated by thermal expansion. As the motor warms the needles moves to close off the circuit. What throws most for a loop is the enrichener has to have constant power to operate.
Check the power connections to the enrichener. if there is loss of power the needle stays open causing a over rich condition, flooding and hard/no starts when the motor is warm.
Test the enrichener by remove it from the carb. One screw and it pulls out. Measure the length of the needle extending out of the bottom. Hook the leads up to any 12v power source. After a few minutes the needle should extend approx. 1/8". Remove the power source and the needle should contract. If no movement, replace it.
The cvt issue is most likely worn roller weights. They are a wear item and should be replaced periodically as a part of regular maintinance. There are tutorials on the web detailing roller replacement and the enrichener testing also