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05-28-2008, 01:19 PM   #8 (permalink)
kaboom10
 
Join Date: Mar 2008
Location: royal oak, mich
Posts: 24
Re: A strange misfire

I found the problem finally. It was #3 COP. I took resistance readings from the contact point spring for the spark plug to either of the input terminals. Accel is a reading of 6.3 on the 200k scale and compared to a stocker of 5.2-5.6. The third coil I replaced read 4.3 and I figured that was the culprit before I started the engine to try it. This reading confirms why it wasn't a complete misfire. I'm just still used to complete misfires from single coil setups. I'm not at all a chebie fan but the coil per cylinder setup is ez as far as troubleshooting. Thanx to all for the inputs.
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02 F-150 that just LOOKS stock,Trans shift kit,4.56 gears w/ Detroit TruTrac, LiveWire Pro Racer Package tuned. My baby: http://i48.photobucket.com/albums/f240/kaboom10/100_0291.jpg
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