Engine Issues

[NMaineCustoms]

I am wondering if anyone has any thoughts for me . I have a 2005 Silverado with a 5.3L with a garrett 90mm turbo.

I bought the truck about a month ago on ebay from Arizona. drove home fine and has worked perfect up til the past week. all of the sudden I started getting oil out through the pcv line on LH valve cover and higher than normal oil psi. so I thought that maybe it just needed another oil change ( 2600 miles on oil). so last sunday I went to Sears and had a synthetic oil change done and now the engine is smoking like crazy. the oil was being pressurized by compressor on the Magnum Turbo that was on it and eventually destroyed seals in turbo. thought that it may have been just a bad turbo so I installed a new Garrett 90mm turbo today which is running 8psi boost. the turbo works fine but still getting oil in combustion chamber and still coming out of pcv line and drenching engine bay. any suggestions?

[Badass69]

Www.performancetrucks.net

 

Could be something with how the pcv is done. However pushing lots of pressure out of the crankcase is never good.

 

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[chas0218]

Do a leak down test. Sounds like the rings are shot.

[PH-Wolf]

I do a leak down and compression test to see if you have worn piston rings.

I'd start there first, that's what I do when I deal with excessive blow-by/oil consumption issues on engines. That's usually the case, I'd did run into a bad headgasaket once but it was not a GM engine, but with the LS series of engines, I don't think a headgasket is your issue at this time.

[gmtech4]

rings are done and now you get to take it out ,,,,,yippy !!!!