Hi, I hope someone can help me with this issue I am having. I have really tried everything I can think of. I have a Craftsman LT 4000 lawn tractor, model number 917.255581. Anyways, it has ran ok until I started using it this spring. I was able to cut the lawn about 7 or 8 times this year already before I got the problem.
When I start the lawn mower, it does not seem to get getting enough air causing very low RPM, but I double checked the air filer seals, carburetor seals and intake manifold seals and there are no air leaks there. I even took off the air filter and ran it, and it is still not getting enough air. Also while this is happening, white smoke is shooting out of the exhaust. I checked the oil, it is not too full, so it is not burning oil. I tried adjusting the carburetor, but that also does not work. I also noticed the spark plug keeps getting carbon fouled very quickly, even when the mower is only on for a minute or two. There is also no gas in the oil.
Here is a list of parts I recently replaced before the spring
- New Carburetor and seals
- New air filter
- New oil (no oil filter on this model)
- New gas filter
- New spark plug
- New intake manifold
If anyone has any idea on what my problem is, I would really appreciate the help.
