QuestionQUESTION: See prior question; I cannot ask a follow up because he is "maxed out".
http://www.allexperts.com/user.cgi?m=6&catID=834&qID=4789178
First, is there a source diagram so that I can show her the location of the valve? That way she can diagnose it with her friend.
Second, the fuel contamination of the oil; is that likely from both valves? I can understand it from the fuel pressure regulator, but don't know how it would get to the oil from the EGR control.
ANSWER: Russ, where's the prior history? I cannot access your old info.????
Mark
---------- FOLLOW-UP ----------
QUESTION: Hi, Mark. The original question follows. I have since found out that the valve is relatively easy to replace. I still would like to know if the ETC valve, mentioned in another publication, could cause the oil contamination, and do we expect that the pressure regulator could cause oil contamination.
"My daughter is driving my 1994 940 (260K miles) and she is about 100 miles away at college. She has told me that she is blowing smoke from the tail pipe, the engine is running very rough at idle, and that the oil appears "thin". I have her not driving it, and cannot find a qualified repair person where she is. My mechanic thinks it is the fuel pressure regulator (head gasket was replaced <30,000 miles ago and tune up done including replacing plug wires, etc about 10,000 miles ago). First, do you agree on the diagnosis? And second, if it is what he thinks, how easy is it for me to replace it with her away at school? Can I do it with metric tools (box wrenches, etc) or does it take anything specialized? Only other option is to tow it to my mechanic which will cost about $300.00."
Answer Russ, ok, that's better. First,does the car run well/normal? Second, When you say the oil is "thin" thin with what? Fuel or coolant are most likely. Does the oil smell gassy? Does it look normal in colour, just thin? Does it look grey or milky whitish?
Assumptions: if it's gassy, YES the fuel pressure regulator is VERY common and easy to change. No, fuel cannot get in there from the EGR system. If the tailpipe smoke is black or very dark grey, it's probably fuel. If it's white, you are looking at water or coolant. Does the exhaust smell sweet or does it burn the eyes and nose? Your daughter should be able to relay this to you now that she knows what to look for.
I sure sympathize, my daughter is 300 miles away at college with a car. She's sharp though, I taught her a lot and she helps the boys with their cars! VBG
Mark
