Engine Shake

Topic: Engine Shake (Read 1011 times) previous topic - next topic

Engine Shake

July 17, 2008, 07:44:37 PM

I have a 1988 v6 and today on the way to class it started to stumble pretty hard. Under acceleration the stumble increased, almost as if a cylinder wasn't firing. I pulled the plugs and wires and everything is sparking fine. I towed it home and ran it, it cleared up a little bit by itself, and then I took it around the block. It smoked like hell for about 1/4 mile, then stopped. While smoking it was running fine, but did smell of raw gas. I added some dry gas and a bottle of fuel injector cleanner. Just incase there may have been water in the tank, although I do buy mobil gas. I thought maybe an injector was a little dirty. I only ran it for a couple of minutes after added the fluid when I cleared up. Anyone have any ideas what might have happened here?

Anything I might want to check before I drive it again?

Engine Shake

Reply #1 – July 17, 2008, 10:49:03 PM

Maybe it had bad or old gas? i really don't know what to tell you i wish i did.

Engine Shake

Reply #2 – July 18, 2008, 10:30:59 AM

A little more info would be nice to include.

Had the car been sitting? Last tune-up?

Engine Shake

Reply #3 – July 18, 2008, 12:25:14 PM

Tune up, check electrical system, check fuel system (leaky injector), RUN CODES

Engine Shake

Reply #4 – July 18, 2008, 08:10:24 PM

no codes appeared. TYhe car is driven almost daily. the last tune up was about 6 months ago. the plugs are about 3 months old tho.

Engine Shake

Reply #5 – July 19, 2008, 01:15:41 PM

does it run good when it is cold? It could be MAP sensor or its vac hose.