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Seized rocker roller and cam replacement

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Old 09-11-2015, 12:02 PM
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Default Seized rocker roller and cam replacement

2 weeks ago I spent $650 to have 4 coils replaced for a misfire on 04 F150 FX4 with 157K miles.

Ran great for 10 days and then engine started knocking.

Took it to the same shop, pulled off valve covers and showed me a rocker roller that seized (threw the roller off center in the rocker) and shaved some of the metal off the cam. Mech says he's never heard of this before not sure what caused it, and the repair is $1750 or $6K for a rebuilt engine.

I've found a hand full of posts about this happening but no feedback on what causes it or if its worth fixing (vs. likely to happen again).

Does anyone have advice? Not sure if the coils were a symptom all along, or if it was just a fluke and the rest of the engine is fine.

I'm leaning toward doing the repair, and having the same shop do it. Should I get a second opinion or another quote first? This is my work truck so I need to make a decision to either fix it or replace it pretty quickly.

I put 350K miles on my 97 F150 so this one seems like a baby to me, but I don't want to start throwing money into an engine that may have serious problems.

Any thoughts would be appreciated. Thanks!

Last edited by maht4ev; 09-11-2015 at 01:13 PM.
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Old 09-11-2015, 01:06 PM
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I just had the same thing happen to my 2004. I'm in the process of trying to replace the head with a reman.

DO NOT, I repeat, DO NOT get a reman head from Surefire, ATK, Spartan (all the same company, thru autozone, advance, oreilly). I'm in the middle a battle with the asshats right now.

As for cause... stuff happens.
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Old 09-11-2015, 01:30 PM
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HINT/TIP: You'll find posting in the
Late Model F150s > 2004 - 2008 Ford F150
section more helpful/appropriate than General F150 Discussion posts.
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Old 09-11-2015, 01:35 PM
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ATK was one of the quotes they provided for a rebuilt motor, so I will do some research on it and look into a motor from Ford instead if I decide to go that route.

Thanks!
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Old 09-11-2015, 01:38 PM
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Ahhh... I see. Will move this (or repost) in the late model section. Thanks!
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