rambo91145

thanks for helping me out. heres my problem. i have a 94 GXE and it has been idiling rough and having sluggish take off the last about 2 weeks and yesterday i noticed there was a little white smoke coming out the exhaust like on a cold morning only its not cold out. after it warm up for about 20 min theres no smoke but still runs rough. also muffler is making a blub blub blub sound. i have just given it a full tune up: plugs,fuel&air filter, oil cahnge, pcv, etc and it is still running bad. i am thinking leaky head gasket.....any ideas? anyone PLEASE give ideas. thanks a lot guys.

primeevil711

how many miles????? have you checked your O2 sensor? have you smelled the exhaust, does it have a strong odor? have you checked your intake piping for leaks? I'm all out of ideas now.

rambo91145

it has about 117k on it. i didnt check the o2 sensor or the intake but the exhaust wouldnt be white would it? i think its the head gasket or maybe a leaky intake ill find out for sure sat. so wish me luck, but it is idiling expensive so we'll see.

Matt93SE

iTrader: (44)

The first thing you need to do it check your antifreeze for oil.. if it's got oil in it, then you've obviously got a leaky head gasket..
same thing for your oil.. if the oil has antifreeze in it, then you got a big problem. (oil will look kinda like chocolate milk when it's got water in it. gets lighter in color and extremely cloudy).

if both of those show okay, then run a compression test on the engine.. if you do it correctly, you can narrow the problem down to which cylinder and where it is.
if all looks good there, then you've got a problem..

white/blue smoke is cause by burning oil inside the engine... so it's logical to look for a bad piston ring or valve seal.
Good luck!