Need help!!! Excessif camshaft wear - Cobalt SS Network



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Old 04-12-2017, 09:57 PM   #1
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Need help!!! Excessif camshaft wear

After a couple of time hearing ticking in the engine, I decide to remove the cover valve to check what it could be. And I found out some flaking spots on intake camshaft. Did someone could tell me what could cause that?

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Old 04-12-2017, 09:58 PM   #2
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Contamination in the oil system if my guess.
By that I mean like fine metal flakes
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Old 04-12-2017, 10:31 PM   #3
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Quote:
Originally Posted by Bass_Waves View Post
Contamination in the oil system if my guess.
By that I mean like fine metal flakes
But is only on intake cam, the exhaust cam is fine. If it was coming from the oil the exhaust cam will be damage to?
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Old 04-12-2017, 11:03 PM   #4
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Check it over real good. Check for damage on the rollers too
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Old 04-12-2017, 11:13 PM   #5
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Rollers have some strippe on it but I think they come from metal flake debris of the cam
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Old 04-13-2017, 11:54 AM   #6
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Update

I remove the oil pan to see if it as other debris. Found some gold shadow in oil stay in the pan. Hope crank and rod bearing are ok. I remove the strainer and I found a roll strip of metal stuck in. It's not magnetic, so I think is aluminum. Now I have to found where is come from.


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Old 04-13-2017, 12:06 PM   #7
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Good luck man, doesnt look pretty.
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Old 04-13-2017, 12:28 PM   #8
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I'd start looking for a new engine now.
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Old 04-13-2017, 02:16 PM   #9
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Looks a lot like the chrome plating on the roller rockers. ive seen stuff that in 5.3 trucks a couple times from the lifter roller but usually not in that big of a piece. check your rollers real close in comparison to the others.
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Old 04-13-2017, 04:31 PM   #10
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All roller are fine, some have thin strip probably cause by the debris in oïl. It's not magnetic, so I think is aluminum and from it's shape I think is from a rotating part or holding rotating part. Next step is to remove timing cover see if could come from there.
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Old 04-14-2017, 12:19 AM   #11
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Ouch man. I would offer a running engine but it may be sold soon. I do have a short block of u need it. I'll throw in a spare head and gaskets for free. Including a headgasket
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Old 04-14-2017, 06:54 PM   #12
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the pitting is from worn needles in the rollers
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Old 04-21-2017, 06:56 AM   #13
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Do u have a powder coated valve cover
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