Hey guys!! My car has been making a backfire sound that's been coming from the intake manifold. Its been doing this for about 2 years now, never really paid attention to it. I just recently started hearing it more and louder, I did a compression test with the FORD programs that they have and my compression in all the cylinders are 100% except for 1, cylinder 7!!!!! it was at 90%?!!!?!? that's okay but if it exceeds higher than 15% then that's when it becomes a problem. I haven't tried taking a spark plug out, worried about breaking it in half and its the only car I have right now. NO CHECK ENGINE LIGHT, CAR RUNS PERFECT.
Has anyone experienced this problem?
Has anyone experienced this problem?