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Old 11-14-2017, 02:04 PM   #1
BobWolf
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2005 VUE 2.2L
2002 SL2
Default Debris in oilpan. What is it?

2.2 Ecotec Ion rebuild.

So far so good with the inframe rebuild.
Head stripped, cleaned, and checked. Getting ready for a valve job for what its worth polished the chambers. I removed the pistons, cleaned, baked, high temp ceramic coated the crowns, phosphate dryfilm coated the skirts. New Mahle standard rings gap at the middle of specs bores needed very little correction just a quick pass with a hone. rod bearings were good, journals look good, crank play is in spec. So far, the rebuild has been unremarkable

I removed the oil pan to reinstall the pistons and I opted to remove the windage tray and clean the oil pan and inspect the oil pickup tube, at this point I found the remains of what appears to be old timing chain guides, this along with other minor damage indicates timing chain failure at some point.

I found pieces of some kind of ring stuck under the oil pickup.
It measures about 1/8 inch thick and about 1 1/4 inch in diameter and almost fits the diameter of the snout on the main pulley and inside the the oil pump gear. one piece was blackish blue so it got very hot before failing.
Looking around inside the crank case Im not finding any signs of parts that failed under force so this has me puzzled.

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Old 11-14-2017, 03:32 PM   #2
underthehood
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1999 SL2
2004 VUE 2.2L
Default Re: Debris in oilpan. What is it?

Perhaps the engine had a catastrophic chain failure and or water pump) and no one went in and cleaned it out after a repair or perhaps you have WAY more trouble than you thought

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Old 11-14-2017, 03:43 PM   #3
waiter21
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2003 VUE 2.2L
Default Re: Debris in oilpan. What is it?

can you post a photo?

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Old 11-18-2017, 11:03 PM   #4
BobWolf
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2005 VUE 2.2L
2002 SL2
Default Re: Debris in oilpan. UPDATE

Update.
Man I hate it when people do hack job repairs, maybe its because I took Aviation mechanics and always had zero tolerance for halfazed workmanship.
Anyway, I started removing the timing chains the cam set looks like a cheap aftermarket garbage knockoff kit.
The balance shaft gears are OEM and the exhaust and intake balance shaft gear covers were beat up and appears to be missing a spacer that is close to what was left of the metal ring I found in the oil pan. Speaking of witch I'm glad I was able to remove the pickup tube as it too was jammed full of pieces of plastic chain guides. Surprisingly the engine bearings seem to be in reasonable shape with very little play and still in specs.

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