watchingcrow
Active member
Have not heard back from my more recent posts. I get it that I post a lot about my Overboost. I have followed all suggestions and replaced many parts just to be sure. Still I have the Overboost. What is weird is that the steps i have taken, like yesterday installing new MAF, which did not solve the problem but seemed (how is this possible?) to "improve" the performance up a certain hill on Skyline Blvd Highway 35 San Francisco. I got several miles up a moderately steep incline running it above 30,000 RPM (the usual trigger) and was about to think i had solved the problem when suddenly there it was. I turned off and back on at traffic light and headed home. It took about 30 minutes of driving before losing the Turbo. Then I got the engine light too.
Anyway about the Oil Blow By. On Monday i finally figured out a way to get that third bolt out connecting the EGR to the Intake Manifold and looked inside, stuck my finger inside, using finger nail to scrape at surface. There was only a light sheen of a very black greasy substance, the same i saw in front of the flipper thing in the EGR (moves freely by the way) and then someone said that older TDIs have problems with oil blow by which made sense seeing the grease on the walls of the intake. Can Blow By cause Overboost? Or, is that a separate issue?
Thanks to anyone who replies
Michael Patrick San Francisco
Anyway about the Oil Blow By. On Monday i finally figured out a way to get that third bolt out connecting the EGR to the Intake Manifold and looked inside, stuck my finger inside, using finger nail to scrape at surface. There was only a light sheen of a very black greasy substance, the same i saw in front of the flipper thing in the EGR (moves freely by the way) and then someone said that older TDIs have problems with oil blow by which made sense seeing the grease on the walls of the intake. Can Blow By cause Overboost? Or, is that a separate issue?
Thanks to anyone who replies
Michael Patrick San Francisco
Last edited: