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SVT3191
11-09-2004, 08:14 PM
:( Tech Question guys, I have a 98 Cobra with about 59k on it. About 2 months ago, I noticed a miss and had the garage change the plug wires on it. Also, the plates that hold down the plug wires on the manifolds were removed to allow the wires more room, I got 9mm instead of 8. Then about a week ago, I replaced both coil packs, OEM from Ford. Now, I am still noticing a miss. No codes are coming up on the computer, and the check engine lite does not come on. What gives here? Where should I start to look?

tcrews
11-09-2004, 08:44 PM
Do a leak-down and compression test. Also did you replace your plugs as well? I suggest and use Autolite 764's (gap at .054).

Have you replaced your fuel filter? Those can get clogged and give you a "miss" feeling.

ausie
12-23-2004, 12:17 PM
You may also have a miss-firing fuel injector either the connections are loose or there is dirt on the fuel side or carbon on the intake side. I would double check the gap on all plugs as well as clean the MAF sensor. Sometimes hesitation can be related to dirt on the MAF.