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Originally Posted by oab_au
Chuck sounds like you are getting boost into the crankcase. How have you got the crankcase ventilation set up?
Harvey.  |
I think this is the case. It just started happening, so I don't think it is a problem with my crankcase ventilation, which is ventilated directly to the atmosphere, along with my cam vents. I am thinking either rings as trevor said, or perhaps a hole in the piston. I have had no detonation events that should have caused this. It is an older motor though 135k. It may be time to bite the bullet and just pull the engine and rebuild it.
I am also getting a fuel smell from the vent. I seem to miss once in a while as well.
I think it is pretty apparent from the folks who are using FI that more is required to achieve this. Intercooling and lower compression for starters.