[thisoneroller]

My engine light came on and got it checked it out at autozone. They found that I had a P0300 multiple cylinder misfire. When I start the car, the engine
fires instantly. Everytime I reverse the car, it feels like its going to stall. So what i do is park the car and leave the car running for like two minutes. What is most likely the problem? I have a 01 corolla with 154000 miles.

 

[CorollaTRD99]

check your spark plugs. if you recently changed them, make sure they are calibrated for your car

 

[thisoneroller]

I checked one spark plug and took look at it. It seems like it has a little bit of oil in it. I checked the 2nd spark plug and there was a little bit of oil as well. I sprayed the 2nd spark plug with a brake cleaner and put it back in. Boom, it breaks. I tightened the spark plug too tight. Damn.. Looks i need to replace my valve cover gasket.