Crankcase pressure too high?
#1
Crankcase pressure too high?
Hi all, I have had many headaches over this problem, and trying to find a solution of course has only made them worse.
I have an '88 5.0 with 99,000 miles on it. It was supercharged about ten years (5k miles ago) and this past summer I finally got around to getting bigger injectors to fix the air/fuel ratio.
This is my question. Will the higher pressures of the fuel and air inside the engine lead to higher oil pressure in the crank case? I'm taking a shot in the dark on this one, because I have a very serious oil leak. Actually, I'm losing about a quart of oil every 60 miles and need to keep some in the trunk whenever I take it out.
My sneaking suspicions are that it's a high oil pressure causing the rear main seal to spurt oil (I never looked too close to it at idle, but my garage floor is a mess of stains because of this).
Looking for anybody who has/has had this problem before, or if anybody can tell me what's going on.
I have an '88 5.0 with 99,000 miles on it. It was supercharged about ten years (5k miles ago) and this past summer I finally got around to getting bigger injectors to fix the air/fuel ratio.
This is my question. Will the higher pressures of the fuel and air inside the engine lead to higher oil pressure in the crank case? I'm taking a shot in the dark on this one, because I have a very serious oil leak. Actually, I'm losing about a quart of oil every 60 miles and need to keep some in the trunk whenever I take it out.
My sneaking suspicions are that it's a high oil pressure causing the rear main seal to spurt oil (I never looked too close to it at idle, but my garage floor is a mess of stains because of this).
Looking for anybody who has/has had this problem before, or if anybody can tell me what's going on.
#3
Do you have any idea what your current oil pressure is? Its possible that you just need a new rear main seal. If you don't have an oil pressure gauge capable of giving you a accurate reading I suggest getting one . Normal pressure should be somewhere in the 40-60 psi range. Have you ever replaced the pcv , if not it could be plugged , or the screen under it is plugged . If you have no crankcase ventilation this would cause oil leaks in the seals.
#5
#6
In response to an earlier post, no coolant in the oil and I don't have reason to believe I'm burning oil either. Thanks for the help guys, as soon as I pull the cover off it I'm going to check all the seals. Kind of had a "duh" moment here. I had a friend of mine tell me about a part called a breather, do you all think that might help? Seems like if that does the trick then it's a heck of a lot easier than trying to access the rear seal.
#8
In response to an earlier post, no coolant in the oil and I don't have reason to believe I'm burning oil either. Thanks for the help guys, as soon as I pull the cover off it I'm going to check all the seals. Kind of had a "duh" moment here. I had a friend of mine tell me about a part called a breather, do you all think that might help? Seems like if that does the trick then it's a heck of a lot easier than trying to access the rear seal.
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09-24-2015 10:12 PM