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Old 11-14-2017, 02:05 PM   #1
BobWolf
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2005 VUE 2.2L
2002 SL2
Default Depris 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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Benjamin Franklin.

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Old 12-06-2017, 11:46 AM   #2
ddemier7
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2004 ION-1 Sedan
Default Re: Depris in oilpan. What is it?

I have some oil slude build up. How hard is it to take the head off and cams out and have cleaned to remove sludge? Is it even worth it?

Would you reccomend just taking the valve cover off and vacuming sludge out? Or not even mess with it. Its a 2.2 ecotec with 218,000 miles but runs great!

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Old 12-06-2017, 01:59 PM   #3
hoosierrun
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2006 VUE 2.2L
Default Re: Depris in oilpan. What is it?

Quote:
Originally Posted by ddemier7 View Post
I have some oil slude build up. How hard is it to take the head off and cams out and have cleaned to remove sludge? Is it even worth it?

Would you reccomend just taking the valve cover off and vacuming sludge out? Or not even mess with it. Its a 2.2 ecotec with 218,000 miles but runs great!
May be best not to mess with it. Loose stuff breaking off will drop down the oil galley passageways and small stuff might get picked up (or clog) the pickup screen, get caught in the oil pump gears, or potentially clog the oil filter.

With as much mileage and how good running it is... I don't think you can make it much better, and there is the potential to create problems.

...
John.... 2006 Saturn Vue, 2.2, 186,000 miles Recently junked out - (threw a rod)

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