What causes my 1994 lexus gs300 to start smoking an running rough an cuts off. white fuel smoke.

SOURCE: 1989 chevy 350 automatic, white smoke

white smoke is antifreeze try checking the compression

SOURCE: Jeep running rough; black smoke from tailpipe; dying occasionally

Have you taken a spark plug out yet? You may have fowled them out. if they are not clean and have a whitish tone to them, then they need to be replaced.

SOURCE: how to replace fuel filter on 1994 lexus gs300

you first find the fuel pump fuse then allow to run the engine then remove the fuel pump pressure fuse, immediately engine will stop, this is to reduce the fuel pressure in fuel lines, jack up the vehicle fuel filter is located under the car just infront of rear side driver tire remove the old one and fix the new.

Mike Butler

• 6674 Answers
• Posted on Dec 20, 2009

SOURCE: White smoke, at the first start of the engine and

Does it use any oil, or lose any coolant? If not, do you make a lot of short trips, then shut it off by chance? If your not using oil, or coolant, then I'd say take it on a long drive at highway speeds to drive out the moisture laying in your exhaust system. Recently had a muffler go on wife's car that does a lot of short trips, and old muffler was almost full of water from condensation and obviously poor exhaust design, that allowed it to build up like that. Took it next night on trip about an hour away. Every time I took off, or passed a car, white smoke rolled out the back. On way home, it stopped and cleared up.

SOURCE: Suzuki Vitara V6, MAF sensor, white smoke.

i have a simialer problem but i was getting neat fuel out the exhaust as well . i removed the engine because id got a replacement then stripped the old one and as i thought it was a valve timing problem.looking at the engine from the front the cams on the left bank had jumped one tooth out of time so fuel was not being burnt and coming straight through the exhaust.strangely it didnt seem to have a big missfire and idling and smoke got worse when warm.