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4.9 excessive crankcase pressure

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Old May 15, 2014 | 01:32 PM
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teebag150's Avatar
teebag150
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4.9 excessive crankcase pressure

Hey everyone, new to this site and actually ford trucks in general. i just picked this 89 f150 up about a month and a half ago and just recently noticed theres a leak in the valve cover gasket, and my oil pan gasket looks bulged. There is also oil in my airbox, and the small breather filter looks crushed. I've gone through about 2 quarts of oil since buying it, and I'm just curious if anyone else has had issues like this, or any ideas on what's wrong and how to fix it. I've changed the pcv and cleaned out the breather, that's as far as I've gotten thought.
 
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Old May 15, 2014 | 01:44 PM
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Sounds like compression and vacuum checks are the next order of business.
 
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Old May 17, 2014 | 12:20 AM
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since your new to fords, and straight sixes, did you buy it like this?
if so then you probably bought an engine with a bad ring or two.
if this happened after you bought it, then you blew a ring, congrats!

seriously though, thats what my bet is, get a new valvle cover gasket, and clean the valves and the cover and put it back on and itll stop leaking there.

as far as the breather, stop fueling your engine with oil.

either create a road draft tube( put a tube on the breather that hangs down towards the road so ti doesnt get oil all over everything in the engine bay)

or you can put abolut 6" and put the tube to a crude catcher(such as a carb cleaner can with a hole stabbed into it to catch it)

either way you need to do the compression checks and vacuum checks.

i didnt and now im rebuilding my mototr, granted i made it another 8k and its still running fine on five cylinders, you never know when it changes its mind.
 
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Old Jul 17, 2014 | 07:41 PM
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Thanks for the tips everyone, i did some band-aid fixes for now. i found out it was just extremely worn gaskets all around. now i have a different question, can anyone tell me where my air pump hoses should hook up to? The 2 hoses are both unplugged and i can't find ANYWHERE any information except how to delete it...
 
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