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small coolant leak

luc

Active Member
Joined
May 16, 2004
Messages
77
Reaction score
16
City, State
Salinas Ca
Year, Model & Trim Level
1995 XLT 4WD
2016 XLT 4WD
Hi:

I have a 95 Explorer with the 4L engine and 160.000 miles on it.

I have a very small coolant leak (about a glass of water in 500 miles) that seems to be internal since I can't find any trace of a leak on the outside of the engine or radiator/hoses.

There is no water in the oil or tranny and the truck run great.

My dealer think that i have a craked head. I doubt it since usualy a craked head will allow combustion gas in the coolant and push back a lot of water in the overflow tank through the radiator cap

What do you think? intake manifold or heads gaskets?

Thanks.

Luc.
 
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Papa

Well-Known Member
Joined
April 1, 2005
Messages
315
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City, State
Clearwater, FL
Year, Model & Trim Level
97 Eddy
How old is your radiator cap? It could be leaking by the cap in minute amounts and is a lot easier to fix than some of the other stuff.
 
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budwich

Explorer Addict
Joined
May 4, 2005
Messages
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City, State
Ottawa, Ont
Year, Model & Trim Level
96 XL
its your heater control valve.... it leaks water onto your exhaust manifold and you will normally not see it on the ground.
 
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luc

Active Member
Joined
May 16, 2004
Messages
77
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City, State
Salinas Ca
Year, Model & Trim Level
1995 XLT 4WD
2016 XLT 4WD
The cap is fairly new ( 1 year old) + I did a pressure check ( 16psi) and I'm loosing pressure very,very slowly

Heater valve is fine (i did replace a leaking one a few years back),no leak from either the shaft, crimping or hoses, all dry with no sign of dried coolant
 
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Papa

Well-Known Member
Joined
April 1, 2005
Messages
315
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City, State
Clearwater, FL
Year, Model & Trim Level
97 Eddy
Are you sure the water pump seal is not leaking at all?
 
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cfd911

Active Member
Joined
April 13, 2006
Messages
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City, State
chicago IL
Year, Model & Trim Level
2015 xlt 4wd
you definatly need to have the system pressure tested and or dye tested,

i know by experience intake manifold gaskets can leak without showing any oil contamination, but do yourself a favor try a dye and pressure test it will definatly put an end to your confusion good luck
 
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