Originally Posted By: 4wheeldog
Originally Posted By: Turk
Originally Posted By: 4wheeldog
Originally Posted By: asand1
Leaking injector causing a rich condition, causing hyrdolock(banging), and fuel dilution "making oil"??
A leaking injector would also essentially cause a wet compression test, explaining the 180 and 200.
What cylinders had the black plugs.
Maybe. But a blown head gasket would explain all symptoms as well.......Especially the "Bang bang".
All 4 cylinders have a black, dry, coating all over the plugs.
If you have not run the engine, the black powder could just be a result of several cold startups, with very short runs in between. Which is likely, with a bad engine noise being diagnosed.
Oh, and it really is not kosher to do a compression test on a cold engine. So, the shop's results only show that all the cylinders have compression. You really are going to have to run this thing to go much further in diagnosing it.
^This.
First, what on earth is a 'Bang bang' sound? And as an FYI, a car with that sound cannot be accurately described as 'near mint'. You're in a forum of gear heads, we could care less about cosmetics.
1) A qt. over can produce black plugs..the extra oil is typically burned off, and as a result, you'd get a lot of black gook over the plugs.
2) Plugs typically need some time to warm up to burn off the typically richer conditions on start up.
3) replace the plugs, do a proper oil change with the right filter and oil (and amount), drive the thing around for at least 50 miles and let the plugs cool, and pull one and see if it's clean.
The Law of Parsimony: The simplest explanation (or action) that adequately explains (or resolves) your situation is always preferable. Don't go digging around the engine unless you a) Have justification, or b) really know what you;re doing. Otherwise, you're far more likely to create problems than resolve them.