Thread: 250 oil usage
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Old 12-11-2003, 10:47 PM   #9
76HighSierra
DAMN, I love Big Blocks!
 
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Join Date: Aug 2003
Location: New Mexico, USA
Posts: 619
Quote:
Originally posted by sider68
I blew out all the lines to the carb and replaced pvc valve.I checked it again and it was down a quart after a week.The air filter needs to be replaced again.
It does puff out some black smoke only upon starting up.Help as I am at a loss.
One guy told me to add Lucas to the oil and put a piece of cloth or rag in the breather hole.
Have a leakdown test performed. You "more than likely" have bad piston rings. At very least, do a compression test. If that shows to be somewhat acceptable, THEN go for the leakdown test.
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Marc Bona
Hobbs, New Mexico
1976 1/2 ton GMC High Sierra.
454 c.i.d./ TH400. *Soon to get a mild warming over.*
3.40 rear.
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