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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 12592
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Curtis, I'm having a similar problem with my case 446 tractor,

Customer Question

Hi curtis, I'm having a similar problem with my case 446 tractor, it turns but won't start anymore, both plugs are new and sparking
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.
Onan B43M. If you put fuel into the carburetor throat, will engine fire?
Expert:  Curtis B. replied 1 year ago.
If, not . do you have compression? when did engine last run?
Customer: replied 1 year ago.

Hi Curtis, after a bunch of attempts I got it to fire and run for about 10 seconds. I also tried with a quick spray of brake cleaner as starting help and that may have helped it to start the first time.

It didn't run for at least 4 years, back then it was the same issue and that is why I didn't use it since.

I don't have the equipment to check compression.

I think I need to make sure the speed adjustment is working right first and then retry this...

Expert:  Curtis B. replied 1 year ago.
Compression is ok, if it started! I would clean the carburetor and check the fuel to the carburetor.
Expert:  Curtis B. replied 1 year ago.
Seems to be lack of fuel to me!
Customer: replied 1 year ago.

I will clean the carb. Fuel is definitely getting to it as after a prolonged start attempt it's gushing out from the top when the fuel pump runs.

Expert:  Curtis B. replied 1 year ago.
Float and needle valve maybe stuck,causing flooding.