My 2001 Corrola is consuming a ton of oil. It's not leaking as I have cleaned the oil pan and surrounding area real well. It's not smoking, whats up?
It runs just fine with no knocking or any evidence of something wrong. I cleaned the bottom /oil pan ect and there is not evidence of a leak. It is not smoking, yet it is consuming oil way to fast ,, as in 1qt every 400 miles. Whats up ? and what can I do about it
Manufactures specs are a quart in 600 is the limit so a quart in 400 is beyond the limit, so if it isn't leaking it out then it is burning it, you may not notice any smoke if the emissions systems are fully operational as the catalysts are burning the excess oil but they won't last long doing it, you may have a broken ring, damaged block or just a plain worn out engine.
I heard that that engine was manufactured with "too small" oil feed ports on the rings and that an engine/piston rebuild/replacement is in line is this probably true?
The above commenter is correct. You don't need FULL rebuild, just for the piston rings to be replaced, and more oil drain holes drilled along the oil scraper ring groove in each piston. This can be done with the engine in the car, I followed this excellent video http://youtu.be/A595LR4SQpI one thing he didn't mention, don't forget the washers on the new head bolts, if you do, don't reuse the new bolts after tightening. they are torque to yeild, which means after one use they are in fact trash. I learned this from experience.
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