Our 560 with a gas engine will foul plugs on cylinder 3 & 4 after running for a short time. Running the choke out a bit will help, but not for long. We don't use the tractor very often, so would it be wiser to overhaul the engine or look for a good use one?? Thanks for any input!
- Thread starter jd 620
- Start date
rustyfarmall
Well-known Member
It is very unlikely you will find a complete, used engine that is any better, if even as good, as what you have now. If the spark plugs are fouling because of heavy oil consumption, you might as well bite the bullet and do a full rebuild on the engine. However, I don't understand how running the choke part way out is going to help. That just doesn't make any sense to me. If the engine is NOT burning a lot of oil, I think a good general tune-up is in order first. Rebuild the carburetor, and maybe even replace the ignition coil, but not necessarily in that order. It also wouldn't hurt a thing to pull the throttle back on that tractor and make it work hard for 15 to 20 minutes.
rustyfarmall
Well-known Member
The caps will work, but it is at best a "band-aid" fix, and you are only prolonging the inevitable.
mike paulson
Member
an engine works at a certain air fuel mixture, if you say your pulling the choke back to make it run alittle better that means your restricting air flow , in other words richining the mixture to make it run good, this sounds like you have to adjust the air fuel mix on your carb, try that first before you rebuild your motor and see what happens, iffin the A/F is properly adjusted and you stop fouling your plugs everything might be dandy. but if your plugs are indeed being fouled with oil you do have a problem, you say oil corrosion which really doesnt add up?
post a pic of one of your oil corroded plugs.
post a pic of one of your oil corroded plugs.
Anonymous-0
Well-known Member
Cyl's 3 and 4?? Leaking head gaskett?? Bud.
Brownie 450
Member
Intake manifold gasket leaking air on 3&4??
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