the diffrence between...
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Senior User
Joined: Sep 2007
Posts: 186
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the diffrence between...
the 92-94 ans the 95 4.0 engine? im tryin to replace the head gasket on my explorer the dealer has put in a engine with lower miles and the parts on the engine say january or 95. the lable on my valve cover is 944a. i called the dealer and they told me its a 94 engine but there the same up to somewhere in the yr 2000. also i did a oil change and the oil plug was milky but the oil looked allright. my car been eatting lots of water i gotta add water everyweek along with antifreeze. i know i got a blown head gasket or a cracked head dealer sold me thie vehicle like this to me cause it had no thermostat.
Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
WE need more info....
do you have the engine open?
did you do a compression check on the cylinders?
are there any external fluid leaks?
do you have antifreeze odour out the exhaust?
Water in the oil will emulsify (milky), needs to be investigated..
do you have the engine open?
did you do a compression check on the cylinders?
are there any external fluid leaks?
do you have antifreeze odour out the exhaust?
Water in the oil will emulsify (milky), needs to be investigated..
Postmaster
Joined: Dec 2001
Posts: 3,742
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From: UT
I know there's an article somewhere on the net (might be at TRS) that details the history of the 4.0 V6. There was a link posted here (maybe in the 2.8, 2.9, 4.0 forum) to that page, but it never got stickied, so I don't know how hard it would be to find here. I know there are a few differences between the 1st gen 4.0 OHV ('90-'94) and the 2nd gen ('95+). Things like differences in the combustion chamber and piston shape to give it a little higher compression ratio and stuff. I do not know how interchangeable parts are between them.
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Senior User
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no i dont have the engine open im still driving it i have no choice cause its my ride to work and im moving to ca in 2 months and i need the rig but u think the sealer would work for now? it would smoke at the traffic light just little puffs thats if the car sits for awgile or if its cold. i notice on cold start ups it kinda has a miss to it. ford told me if i ran it long like that i can scratch the cylinders. im gonna see on getting a compression check on next pay day hopefully the truck can last that long.
Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
If the compression test is OK (buy a gauge $20), you probably have a lower intake manifold leak (common)(4hrs and $120+ to fix).
If you leave it too long the antifreeze will contaminate the cat and O2 sensors (big $$$$).
If you leave it too long the antifreeze will contaminate the cat and O2 sensors (big $$$$).
Last edited by aquanaut20; Nov 1, 2007 at 12:35 PM.
