Coolant loss
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Mountain Pass
Joined: Oct 2009
Posts: 167
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Coolant loss
Last year my 1993 non turbo 7.3 started leaking coolant out of the weep hole on the water pump. So I teased it along for about a year and then a few months back I did the whole shebang and changed the water pump, hoses, t-stat, fan clutch, power steering pump, hoses and got the radiator re-cored. So, all was good in the snack bar til I loaned it to my daughter and she drove it for two weeks. No problem there, but when I used it the other day she was running real warm. I was thinking as I'm driving it, that it must be the sending unit cause all is new. When I checked the coolant level it was down just about a gallon. There has been no leakage or puddles under the rig..........Could this be the dreaded electrolysis eating the cylinder away? I don't see what I would consider an abnormal amount of steam from the exhaust. It is cold here now, so there is some. Engine runs pretty smooth....not the smoothest IDI I've had but nothing like it's missing a cylinder. A couple years ago I checked all the cylinders and they were all around 475 to 500 psig. Engine looks to be original to the truck and the truck has 319,000 miles
Thoughts?
V465
Thoughts?
V465
Fleet Mechanic
Joined: Oct 2012
Posts: 1,943
Likes: 21
I would start by checking all the clamps at the radiator hose ends. I had an issue with mine leaking some from where the top radiator hose connects to the thermostat housing. It would only do it if it was cold out and would stop once everything got warmed up. It didn't do it at all when temps were over about 30*. I was able to tighten the clamp slightly to get it to stop, but I will probably replace the clamp with a higher quality one this summer when I do a coolant flush.
i ain't rite
Joined: Mar 2005
Posts: 65,511
Likes: 5,567
From: Marlboro Mental Hospital.
if you had cavitation, you would know it because the engine would not start after a while.
tighten all hose clamps and keep an eye on it. both my 88 and 02 use 1 gallon per year.
i can not find any leaks. every once in a while i get a slight coolant smell when the engine is hot, but nothing is ever wet. so i just live with it and pour a gallon in each spring.
tighten all hose clamps and keep an eye on it. both my 88 and 02 use 1 gallon per year.
i can not find any leaks. every once in a while i get a slight coolant smell when the engine is hot, but nothing is ever wet. so i just live with it and pour a gallon in each spring.
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