Missing under load/heavy acceleration.
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From: Utah
Took the words right outta my mouth.... errrrr, off my keyboard.
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Fixed! Replaced the platinum spark plugs that were in. Two were seized with dirt packed on top of the plug. That was fun. Used Autolite double platinum this time. I dunno why people cried about how hard it was and had to remove fuel rail and using universal joints. I used a combo of a 8 inch extension and 3 im guessing 2-3 inch extensions. The only one that was remotely difficult was number 4. Anyway it runs like a new truck.
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OK, go ahead and flame me,...pick on the old man. I may be wrong, and not up on the modern nomenclature of automotive components, but to me, an individual coil for each plug has always been a coil pack. But, I do understand your use of COP...Coil On Plug. Thanks for the clarification.
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
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From: MI
OK, go ahead and flame me,...pick on the old man. I may be wrong, and not up on the modern nomenclature of automotive components, but to me, an individual coil for each plug has always been a coil pack. But, I do understand your use of COP...Coil On Plug. Thanks for the clarification.
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From: Indiana
Originally Posted by nate6124
Fixed! Replaced the platinum spark plugs that were in. Two were seized with dirt packed on top of the plug. That was fun. Used Autolite double platinum this time. I dunno why people cried about how hard it was and had to remove fuel rail and using universal joints. I used a combo of a 8 inch extension and 3 im guessing 2-3 inch extensions. The only one that was remotely difficult was number 4. Anyway it runs like a new truck.
Senior Member
Joined: Dec 2015
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From: Utah
I think you guys have him confused with this feller. Although I do agree on the Autolite mistake, I think he's the wrong guy.
https://www.f150forum.com/f6/spark-plug-help-415625/
https://www.f150forum.com/f6/spark-plug-help-415625/
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,631
From: MI
I think you guys have him confused with this feller. Although I do agree on the Autolite mistake, I think he's the wrong guy.
https://www.f150forum.com/f6/spark-plug-help-415625/
https://www.f150forum.com/f6/spark-plug-help-415625/
98 F150 5.4L E40D/4R100
Joined: Nov 2006
Posts: 28,519
Likes: 7,631
From: MI
Yea, he's not Joe Escort...my fault. Just so you know Nate, those plugs can screw yuh. They can't always handle the Modular heat range. Very unpredictable. When it's shear luck to get 8 good plugs in a row, -not a chance you want to take. Ap/App 103/104's are one of the worst you can run. Bosch plugs rank #1 as the worst you can try to run.
Last edited by Jbrew; May 11, 2018 at 11:45 PM.