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Joined: Jan 2012
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Campfire Member
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OP
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Joined: Jan 2012
Posts: 215 |
Has anyone used a product that stops valve covers from leaking? The left side of my 4.0 V6 has started to seep a little. I'm working out of town right now and don't have access to my tools and have no clue as to a trustworthy mechanic. Any help would be appreciated. Thanks..
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Joined: Jan 2010
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Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2010
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Check the bolts I have the same engine and the bolts loosen on there own. No one has been able to explain it to me
Last edited by funshooter; 10/15/12.
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Joined: Aug 2007
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Campfire Regular
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Campfire Regular
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I have never heard of a product that stops oil leaks at the valve covers. When you replace them, put a little weather strip adhesive on the gasket and bolts to keep them from backing out.
Only a dingleberry, not yet a Turdlike person, maybe someday!!! I am happier than a retard in a room full of bouncy balls right now!! Joe.
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Campfire Tracker
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I usually use a 1/2 inch or 9/16 socket with an extension. 1/4 inch drive is plenty.
Alan
Food is at the core of Hunting and Fishing - Rebecca Gray
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Joined: Jun 2007
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Campfire Ranger
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Campfire Ranger
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Valve cover gaskets take almost no torque, you have to be careful not to overtighten them. I would look at a new set and then tighten them only snug and check to see that they haven't been overtightened before and changed the trueness of the flange on the valve cover...
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Joined: Nov 2007
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2007
Posts: 47,246 Likes: 11 |
cork gaskets, if you can find them. gasket sealer on one side only. hate the rubber gaskets.
God bless Texas-----------------------
Old 300
I will remain what i am until the day I die- A HUNTER......Sitting Bull
Its not how you pick the booger..
but where you put it !!
Roger V Hunter
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Joined: Jul 2011
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Campfire Tracker
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Campfire Tracker
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They need to be replaced. They're probably just stiffened up a little so tightening them may work for a little while.
Fight fire, save lives, laugh in the face of danger.
Stupid always finds a way.
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Joined: Apr 2006
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Campfire Outfitter
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Campfire Outfitter
Joined: Apr 2006
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What Shrapnel said plus the fact that the gaskets shrink with time and heat. If you over tighten the screws, you can dimple the cover and then they will leak forever unless you take them off and pound them flat from the underside.
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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Campfire Tracker
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Campfire Tracker
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They need to be replaced. They're probably just stiffened up a little so tightening them may work for a little while. or crack the old gasket and make it leak worse
�The constitution of the United States asserts that all power is inherent in the people, that they may exercise it by themselves, that it is their right and duty to be at all times armed!� � Thomas Jefferson
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Joined: Jan 2012
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Campfire Member
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OP
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Thanks for all your replys.
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Campfire Ranger
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Campfire Ranger
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Valve cover gaskets take almost no torque, you have to be careful not to overtighten them. I would look at a new set and then tighten them only snug and check to see that they haven't been overtightened before and changed the trueness of the flange on the valve cover... This and do so non-sequentially...
Epstein didn't kill himself.
"Play Cinnamon Girl you Sonuvabitch!"
Biden didn't win the election.
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Joined: Sep 2008
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Campfire Ranger
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Campfire Ranger
Joined: Sep 2008
Posts: 15,580 Likes: 8 |
Good advice above:
on using cork - actually I like the cork impregnated with neoprene/rubber. Also good advice on not over tightening the bolts.
Depending on previous installations, the covers themselves may be warped and need to be made plane and, as mentioned earlier, the bolt hole areas may be distorted and need leveling.
Your spec manual should give a torque spec for this install - and it is likely to be light torque - lighter than you might expect. The non-hardening gasket sealer on the bottom side(only) of the gasket may help quite a bit. It may not make a bit of difference, but I like to tighten the lower bolts first, then the upper.
NRA Member - Life, Benefactor, Patron
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Campfire Tracker
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I used to battle this all the time back when I messed with cars and racing. I would go to great pains to clean everything, make sure the covers were straight, make sure the gasket is on right, etc. And the first thing I did was start it up to see if it leaked again. DUMB! Clean everything very well, both covers and head surface, new gaskets, sealant on both sides of gasket, AND LEAVE THE DAMN THING ALONE OVER NIGHT. You gotta let the sealant set and seal.
IMHO....
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