93 golf misfire - what am i missing

I don't know about them, but I might try replacing/rotating the spark plug. Conceivably the plug could spark in air, but have a problem under compression. Improbable, yes, but cheap and easy. Or maybe you already replaced plugs and figured that went without saying.

thanks for the suggestion but I already changed the plugs :-(

compression check time!

Ah - forgot to mention that I already checked compression and all cylinders were fine.

So lets see, you checked the compression = fine you changed the spark plugs and wires = fine

So I would guess you either have a vacuum leak or maybe bad/weak valve springs in the cylinder head. :-( Does the brake booster vacuum hose hook up near #4 cylinder intake area? How do the brakes feel and do you hear any hissing at any time?

JMHO and let us know what you find! later, dave Reminder........ Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you are a mile away from them, and you have their shoes. Frieda Norris

Brilliant. you are a genius (and I should have thought of that). It was a tiny split in the rubber joint from the brake pipe to the inlet manifold. I replaced the pipe and the motor is purring again. thanks again dave. Stewart

large or small paypal donation will not be refused! lol

glad it was a simple problem! :-) enjoy! later, dave

I tried that, do you want to know the results?

yes later, dave Reminder........ Before you criticize someone, you should walk a mile in their shoes. That way, when you criticize them, you are a mile away from them, and you have their shoes. Frieda Norris