I have a White Outdoor lawn tractor with Tecumseh engine. I have the following issues and need to find the culprit:
- Heavy white smoke
- Oil smell gas
- There's oil under the air filter and it's leaking over the carburetor and parts underneath
I'd suggest your float is stuck and allowing unfettered fuel to access the engine without flooding it (somehow). An engine will have grey-ish smoke when there's way too much fuel. If it's just enough to run rich, it will smoke black. The difference being the grey is raw aerated fuel coming out, where the black is partially burnt. I would bet if you pulled the plug, you'd find it all kinds of wet. You can replace the fuel pump, but my suggestion would be to just change the carburetor first. You'll most likely find that will solve your issue, and if so, return the pump for a refund. You'll also most likely need to change your oil and filter when you do this. You'll find it way over full. Be careful opening it and ensure you've got something underneath to catch all the excess.