I usually check the community forum a couple of times a week and it seems I learn something new every time, kudos to a wonderful source of useful A4 information. I have a late model A4 and just learned from another thread that the crankcase is vented somewhere near the front, I assumed the crankcase was sealed. Since owning the boat I have always noticed a slight smell of exhaust mixed with hot oil vapour or maybe unburnt fuel in the engine compartment. The exhaust is in great shape after I just replaced the hot section and I know all seals are good all the way back to the transom, and I know I have no fuel leaks anywhere. Now I'm wondering if this 'vented crankcase' is the culprit, and I noticed someone having connected a pipe 'from the crankcase vent tube to overboard'. Where is this vent tube? I thought I knew every inch of my engine and don't recall seeing anything obvious, but I'm still learning. Will a pipe connected to this mystery tube and maybe an exhaust blower be a good fix?
Bob
Bob
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