Help - is this normal?
I have a Duratec installed in my escort running the SBD supplied Titan dry sump pump. I have read that these should be run with a sealed engine so have capped all the engine breathers. The tank is mounted in the engine bay and is vented to atmosphere. When I run the engine (even at idle) the crankcase vacuum is high enough that it is difficult to lift off the oil filler cap, and when I shut the engine down I can hear air being sucked back in for about 20 to 30 seconds afterwards.
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