The reason I replaced my valve cover gaskets was because my oil was leaking into my spark plug well and it caused my car to have a really hard idle and misfire. After switching the gaskets, sparkplugs, and wires the leak stopped and my car has been driving better than ever. I'm not responsible...

Ok sort if a long story my car would not start one day after work, it was fine on the way to work. Anyhow after figuring out the tfi controller had gone bad I replaced it and the car started up just fine ran great... For one day, then I started getting this rondom miss while idle or driving it...

When i pull the wire off cap for No. 1there is no change in the motor. i have rebuilt the 302 engine by; re-ring, bearings, valve seats, as well as many other new parts. The cap,rotor,and wires are new. This is the initial time after the rebuild and it won't run right.symptoms are missing...

i have a 1989 mustang lx 2.3 auto. has a dead engine miss at idle until around 2500 rpm. number 2 is dead (removed plug wire and had not change). i have installed # 2 injector, plugs, wires, cap, rotor. i have good spark at the plug, has power at the injector and a pulsating ground signal...

Ive been having some problems with my '93 LX 5.0L. It idles good but when i drive it after a while (mostly at higher rpms) it seems to miss. timing is correct. Does anyone know what might be the problem?

Hey everyone, About a week and a half ago my service engine light came on. I took it in and got it looked at and the spark plugs replaced... The codes said that it a miss-fire issue so it came then today about 4 days after I got it wiped off the computer the light stated flashing for about 30...

My '86 gt is running funny. it wont idle right it bounces form 200rms to 1000rpms n stalls. when i go to take off in first grear its very slugish like its totally missfiring. here is the catch when i hit 3000rpms it takes off like crazy, all the power is there. its like i hit nos lol. i dont...