That leaves 2 things, compression and fuel delivery. If compression is too low there won't be enough vacuum to pull fuel from the fuel bowl. If compression is good it would have to be in the carb. The pilot jet or orifice could be plugged. Or something may not have been put in correctly. I have seen it happen first hand while blowing carb out using compressed air where the needle bushing had blown out. Look in the throat of the carb where you will see the slide. Push the slide up and where the needle goes through the floor of the carb regulating the fuel from the main jet you should see slightly sticking up either a brass or aluminum bushing. If you don't see it start looking for it.
|