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c/diesel-mechanics•paul_morganpaul_morgan•2mo ago

Appreciation post: My uncle's weird trick for a 6.0 Powerstroke actually worked

My uncle, who's been wrenching on semis since the 80s, told me last month to stop chasing the usual suspects on a 2005 F-350 with a hard start. He said, 'Forget the FICM for a second and check the dummy plugs on the high pressure oil rails.' I thought he was nuts because the truck had good oil pressure, but I was desperate. Pulled the valve covers in my shop in Boise, and sure enough, the o-rings on both dummy plugs were shredded to bits. They looked like black confetti. Replaced them with the updated kit, and it fired right up like a new engine. I'd have wasted a whole weekend and a grand on a FICM for no reason. Has anyone else had a 6.0 problem that turned out to be something simple everyone overlooks?
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4 Comments
jake_walker
Life's full of those moments where you spend hours chasing the COMPLEX thing when the simple fix was right there.
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jamieperez
jamieperez24d ago
Man that's a killer story. Had the exact same thing happen on my 04 F-250 last year, except my "uncle" was a guy named Dale at a truck stop in Wyoming who told me to check the standpipes before anything else. Those little o-rings were so dried out they crumbled when I touched em. Whole job took like 3 hours and saved me from chasing a ghost for days. Its wild how the high pressure oil system on these trucks just makes people think its the end of the world when its usually some stupid seal.
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simonl86
simonl862mo ago
Honestly, I've seen way more blown FICMs than bad dummy plugs (though that's a solid find). Those engines are just a box of surprises.
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laura211
laura2112mo ago
Ugh, tell me about it.
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