QuestionHey, my EGR was causing my car to not pass emissions, and I didn't know where it was, so I took it to Tunex. That was about three months ago. Ever since, gas has been leaking into my oil pan, and since it was brand new, I didn't even think to check the EGR. Now my car will run, but misfires a lot, and won't idle. I've tried everything else, and then I realized that the EGR is for California emissions. I know that a leak in the vacuum line would cause the problem, but since my car isn't Cali emissions, would that be the problem?
AnswerHi Fred:
EGR are used on a lot of car every since the mid 60's. It not just California. It sounds like you have a fuel leak somewhere (maybe in the fuel line I hope). If the fuel in you oil pan is coming from the cylinder heads, you've got real problems. Unburned fuel in the cylinders could be leaking past the rings.
The misfiring tells me you may have foul plugs, which could cause unburned fuel to be dump into the exhaust, not the oil pan.
However, If you are burning oil (e.g. blue smoke in the exhaust), that is a sign that oil may well be seeking into the cylinder chamber, which would try to burn along with the fuel. That would certainly foul the plugs and cause misfiring and also account for the fuel in the oil pan.
If this is happening, you may need a ring job. Have a good mechanic check this out before you do anything.
Hope this helps.
