My 600 Ford fouls the spark plugs early. There is a dry black powdery residue on after only a few start ups after I sand blast them. The #4 cylinder is the worst.
I ran the carb main jet down till it began cutting out but still creates the black sooty residue. I assume it is due to over rich gas but dialing down the main jet does not seem to correct this. All cylinders are affected but it will run on 3 cyls after one quits. The tractor does not smoke and was overhauled a few years back.
Any ideas or experiences?
I ran the carb main jet down till it began cutting out but still creates the black sooty residue. I assume it is due to over rich gas but dialing down the main jet does not seem to correct this. All cylinders are affected but it will run on 3 cyls after one quits. The tractor does not smoke and was overhauled a few years back.
Any ideas or experiences?