Changed spark plugs now runs rough and has thick white exhaust
Drove my 97 Jimmy about 250 mi. Had an oil change before I left and it was running great. Drove it for 3 days after I got to my destination and everything was fine. The 4th day, went to go to the store and it wouldn't start - just turned over. Nothing read wrong on the computer check, was getting spark and gas. Decided to change spark plugs. Wouldn't start at first, but about 2 hours later went to try again and she finally started up. Now she's starting fine but running rough in gear and in park - not smooth like she was. Went to start it up 30 minutes ago and now there's white smoke coming out of my exhaust, especially when I crank up the RPMs. What did I do wrong when I changed the plugs?!
Cars & Trucks - GMC - Jimmy - 1997 GMC Jimmy
Answers & Comments
Changing the plugs probably had nothing to do with it.
White smoke is usually a sign the engine is burning coolant or trans fluid. You might want to check those fluid levels.
If the coolant is low, you may have a leaking head gasket or intake gasket.
I checked my fluids. Tranny fluid\'s fine. Coolant\'s a little low. Thanks. Gotta figure out what I\'m gonna do from here...Btw, I noticed my service engine soon light is flashing - not staying on, but blinking. Never seen that before either. ???
Exhaust doesn't have that distinct antifreeze smell. However, I just had an oil change and my oil smells like gas like my spark plugs did when I pulled them! Another mechanic looked at it and told me that a probably don't have a blown head gasket, that I just probably flooded everything out with gas.