Car runs fine cold. Warmed up runs fine then i rev it at 5k a few times and it then is misfiring. At idle or wherever a constant misfire. Guy I bought the car from said there is a spark plug that is stuck. The other three are brand new. Im thinking this may be the problem but i want to hear other opinions.
Also, what could be causing this spark plug to be stuck??
Also, what could be causing this spark plug to be stuck??