99 suburban smoking at start up
September 9th, 2012, 5:36 AM
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Bad valve seals allow oil to leak into the cylinder. At start-up it burns off, which makes the smoke briefly. The value seals can be replaced without removing the head.
If it were the rings then the engine would probably smoke, to a lesser extent, after warming up. A compression test would show which cylinder(s) are the suspect ones.
If it were the rings then the engine would probably smoke, to a lesser extent, after warming up. A compression test would show which cylinder(s) are the suspect ones.
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