Engine Rattle (sorta) solved. In a big way

Last few months my truck's engine has been ticking. Just tickin' like a dickens. Sounds awful, really. Yesterday enroute to get a new muffler put in the truck would barely run. Maybe 35-40mph and stumbling and fumbling. Guy at the shop pulled the codes - removed #3 COP and found the plug was not really installed. Looked like it'd been bouncing around a bit.

Now the truck simply ticks like a standard 5.4L 3V - no more embarassing diesel sounds.




Driving home the truck still ran rough - but decidedly better. I took it home and reprogrammed via SCT, and on the way to work today the truck just ran perfectly - with the mpg reader showing 17.7-9mpg (compared to usual 15.5 or so).

 

That's a pretty bad plug. I'm assuming you checked the res of them.


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I did not check the rest of them; however I'm saving to replace the lot of 'em (stock plugs at 113k miles now).

 

Yep, you're due ha ha.


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Might be a few miles left on that plug.

 

That plug had about 10k miles on it.

 

That plug had good service, wondering how your other plugs look like.