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i'm guessing you are talking about a valve cover breather??? if you are blowing oil out the valve cover you are looking at having a couple bigger problems that aren't fun to deal with...
It could be anything from a bad PCV valve to broken rings or pistons. Most 4.9s seem to stay pretty tight until 250k with basic care. If your serious about the truck do a compression check to check the health of the cylinders.
regards
rikard
i'm guessing you are talking about a valve cover breather??? if you are blowing oil out the valve cover you are looking at having a couple bigger problems that aren't fun to deal with...
They come too ofter: oil blowing back into the air intake filter
like suggested above. Get a $20 compression tester and check the compression in each cylinder. I usually squirt a little oil in to seal the side wall. if you have bad rings or a broke piston it oil won't make a difference. If it were me... I would want 100psi minimum in each cylinder, and no more than a 10% difference between each cylinder.
Help: sounds serious; looking to buy a 95 F 150 4.9; Auto 4x2; blows oil thru breather
Thanks
Later/Tater
from personal experience i have had two start giving me the same trouble and both are dead now it is very wise to do as he had said (check the compression first) if i had done that maybe my engines would still be going
mine was doing that and after tearing out my engine and taking the head off i could see and feel a scratch on the wall of a couple of my cylinders. therefore, i had a couple cracked rings and paid to have my engine rebuilt. blow by with smoke is almost always a cracked piston ring
mine was doing that and after tearing out my engine and taking the head off i could see and feel a scratch on the wall of a couple of my cylinders. therefore, i had a couple cracked rings and paid to have my engine rebuilt. blow by with smoke is almost always a cracked piston ring
That was my assumption too. I got a reman motor with warranty for cheap to replace. This sounds like a common problem.
yeah, it happends here and there. i had mine totally redone, (new cam, pistons, timing chain and everything) all for $2100 thats including having the head rebuilt also.
The last one I had with blow by... the 83 red one below... My FIL thougth it was just a litle "slack in the cylinder" and that it was ok... I told him not to run it... What did he do??? Drove it the next day to the feed store. Shattered the piston skirt and put 4 cracks in the side wall of the #3 cylinder. I'd have to sleeve the cylinder to save the block... In other words it's now a JUNK BLOCK. I really wouldn't by a motor with blow by unless the truck has zero other problems and is really cheap. Blow by is just a ticking time bomb...