So Tim did a leakdown test on my car and I was hoping for some knowledgeable comments from the members of the forum who have gone through similar problems: Leakdown tests @90PSI: cyl1 87/90 = 3.3% cyl2 81/90 = 10% some leakage detected in the pcv cyl3 82/90 = 8.9% some leakage detected in the pcv cyl4 74/90 = 17.8% some leakage detected in the exhaust No cylinders tested produced bubbles in the coolant. Compression test: cyl1 140 cyl2 140 cyl3 133 cyl4 127 I don't know enough about engines to be able to interpret this very well, but Tim said he believes it could be a burned out valve / valve seat / valve guide and that does seem to make sense. What bothers me is that the car was burning spectacular amounts of oil (4qts in 200 miles, with no visible smoke) (See this thread) when I decided to have it looked at and this doesn't explain it; perhaps a different problem all together? Since I'm a broke full time college student with no job I'm going to keep running it and hope for the best. Any comments on that? Is it going to blow up on me when I'm on the road?
the comp numbers arent the best, but i dont think it would make it consume oil that badly. does it smoke bad out of the exhaust????? i still think your turbo is shot pull off your d/p and see if any oil is getting through
Well, the compression test is within allowable specs (barely). Is this a new car? The oil consumption is ridiculously high! I don't think the exhaust valve explains it all. Did you check spark plugs for deposits? Might narrow it down a bit more. Have you checked for oil leakage out of the engine (crank seals, oil pan gasket, or turbo oil lines? Could be valve guides / seals, but you'd be able to see that much oil getting burned off in the exhaust. The oil has to be going somewhere, and it's either leaking outside the engine, or into the combustion area and becoming a cloud of smoke. Are there puddles on the ground under where you park? I'll forward it to my dad to see what he thinks. He's a mechanical engineer.
