Coolant leak
Coolant leak
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Senior User
Joined: Mar 2007
Posts: 279
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From: Vineland, New Jersey
its not the heater hoses, I checked those....its coming from the top rear of the engine on the passenger side....runs down the oil filter and leaves a puddle in the driveway
Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
the 4L OHV engine has a water passage at the rear passenger side, they leak at the lower intake manifold gasket or the frost plug.
A flash light and a mirror will help you locate the leak.
Modify and old pressure cap, remove the bottom seal, install an air hose nipple in the cap. Pinch off the overflow tube and pressurize the radiator with the modified cap and a 5 - 7psi air supply, this way the water that drips on you will be cold not hot.
Alternate method, install a flush kit, connect to water supply and go look for leak. Best use a pressure regulator (find this at RV place) on the water supply to keep the pressure lower than the vehicle's system rated pressure
Good luck, let us know what you find
A flash light and a mirror will help you locate the leak.
Modify and old pressure cap, remove the bottom seal, install an air hose nipple in the cap. Pinch off the overflow tube and pressurize the radiator with the modified cap and a 5 - 7psi air supply, this way the water that drips on you will be cold not hot.
Alternate method, install a flush kit, connect to water supply and go look for leak. Best use a pressure regulator (find this at RV place) on the water supply to keep the pressure lower than the vehicle's system rated pressure
Good luck, let us know what you find
Last edited by aquanaut20; May 5, 2007 at 09:40 PM.
Post Fiend
Joined: May 2004
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From: Lakewood, Ohio
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Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
Last one I did, 3hrs start to finish, and $100cdn.
I removed the hood and tires, set the truck down on the ground, easier than climbing over fenders. Be meticulious in cleaning the heads and manifolds, set gasket silicon on joints and take your time setting the lower gasket, if it moves it may leak at the same spot(binderdondat).
Good luck, let us know how you make out.
I removed the hood and tires, set the truck down on the ground, easier than climbing over fenders. Be meticulious in cleaning the heads and manifolds, set gasket silicon on joints and take your time setting the lower gasket, if it moves it may leak at the same spot(binderdondat).
Good luck, let us know how you make out.
Postmaster
Joined: Dec 2001
Posts: 3,742
Likes: 2
From: UT
I just did the intake gasket on my '92. I'd call it 6-8 hrs my first time. If I did enough of them, I could probably get it down to 3-4. Probably lost 1 hour searching for bolts that fell off. One of the valve cover bolts fell out and landed on top of the oil filter mounting thing, and another fell out and landed on the transmission. I always hate that, because it seems I lose so much time trying to find and retrieve bolts when they do that.
So far, two weeks after the fact, I don't see any leaks, so I think I got it to hold. All in all, it wasn't too bad. If that's where it's leaking, and you're reasonably good with tools, you should be ok with this one.
I may have to try this next time I get under the hood. As you might guess from my username, I don't always enjoy reaching over the fenders into the hood. I guess you would have to have a wood block (4x4 or so) to put under the i-beams so the knuckles/ball joints aren't right on the ground, but that would make things easier to have the front end lower.
So far, two weeks after the fact, I don't see any leaks, so I think I got it to hold. All in all, it wasn't too bad. If that's where it's leaking, and you're reasonably good with tools, you should be ok with this one.
I removed the hood and tires, set the truck down on the ground, easier than climbing over fenders.
Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
Originally Posted by mrshorty
I may have to try this next time I get under the hood. As you might guess from my username, I don't always enjoy reaching over the fenders into the hood. I guess you would have to have a wood block (4x4 or so) to put under the i-beams so the knuckles/ball joints aren't right on the ground, but that would make things easier to have the front end lower.
4 bolts and the hood is out of the way.