Leaky valve seals don't really consume much oil. The probem is that when they leak the most is at high-vacuum, which is when the throttle is closed and there's not much other than oil going in the cylinders. The other time is when the engine is off and the oil runs down the valve, starting with a good shot of oil on the valve to hit the combustion chamber at once. Little oil but at bad times for the plugs. The other way to tell is to look in the intake at the intake valves which of course means removing the intake if you don't have a scope.
It's either than or someone's been giving it a steady diet of Slick-50 and the rings are now gummed up/stuck, ... your call. Have a compression tester?
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Originally Posted by pawoSD
It doesn't put out any blue as far as I've been able to tell....if you drive gentle for a while then "punch" it, it actually lets out a slight stream of black smoke, then it clears up. Oil consumption seems to be too low to be valve seals....less than a qt per 1000 miles.
Hey now, I am gaining ever more love for diesels because of this car!  If this thing keeps being a pain to maintain (funny how that rhymes  ) I'll be looking for another diesel! |