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1997 Mitsubishe starwagon loss of oil

The 2L petrol motor coupled to auto trans uses 4L of oil per week with minimal running. No smoke is visible from the exhaust. No oil leaks visible. Rocker cover have been replaced. Some evidence of oil weeping out of sump gasket. It has been up on the hoist inspected while revving but still no signs of oil leaks. Where can the oil go or what can be done to fix the problem

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: rocker cover oil leaks NL pajero 1998 NL

The gaskets may not be at fault; the first time the valve cover was removed it was probably damaged by an impatient mechanic.
Most covers are sheet metal and the gaskets have an ugly tendency to get sticky over time making removal very difficult.
An inexperienced or sloppy mechanic can easy damage the edge of the cover causing a permanent distortion that a gasket replacement cannot correct.

I hope you have correctly identified the source of the leak since a warped cylinder head can also cause oil loss but that would be from the junction of the cylinder and block.
That would be much more expensive to correct than replacing a damaged valve cover.

Posted on Jun 21, 2008

  • 1861 Answers

SOURCE: 1993 TOYOTA TERCEL 1500cc Valve Seals Replaced now smokes much worse

You either have had the wrong valve seals installed, they are physically missing, or the valves are incorrect (too loose in the guides/stem too thin). The rocker arm seals will not contribute to your issue. If it did not have the oil smoke before you took the head off, the issue is with whatever the machine shop did. Valve seals have to fit TIGHT, or oil will go down the valve stem into the intake.
Take the head back to the machine shop & tell them to fix it. For free.

Posted on Sep 27, 2008

  • 110 Answers

SOURCE: Oil leak coming from front of engine above the sump area

run engine up to temp so oil thins out then lie under car u should see wer oil is leaking from likely coming from main seal

Posted on Nov 17, 2008

  • 420 Answers

SOURCE: high oil consumption on 2001 Toyota Highlander- 3.0 V-6 engine

If you are using that much oil you either have a BIG leak or your BURNING oil through bad rings

Posted on Jun 09, 2009

  • 6982 Answers

SOURCE: 2002 nissan altima + black smoke coming out of tailpipe.

To begin with, check for fuel in engine oil and do a compression test. If fuel system is not functioning properly (running rich) that will point you in one direction (temp sender, pressure regulator , map or airflow sensor etc) If compression is low, you may have internal engine problem (burned piston, broken ring, or combination of fuel problem causing gas washed cylinders)

Posted on Jul 28, 2009

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