RE: L300 '82 Van with G32B Saturn 1600 cc engine - The vent port to atmosphere hose from my sealed type fuel pump leaks engine oil - as in trying to vent out from pump. I fitted a new pump and the problem remains. Is it a problem witrh excess engine block pressure not venting out ? How is it rectified ?What is the cause of an oil leak from fuel pump vent line ?
check your pcv valve and crankcase breathers to rule out any pressure concerns, if all this is working properly I would go back to the fuel pump as it sounds like it might just be a bad part when purchased new,also check all of your vapor return system from your pump to fuel tank or canister. you didn't mention if it had any other oil leaks but if it was caused by excessive crankcase psi it would show oil seepage from various areasWhat is the cause of an oil leak from fuel pump vent line ?
overfilling????
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