Ford 4.2 L V6 Coolant Leak causes motor failure / hydrolock

Shuxclams

Diamond Member
Oct 10, 1999
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ANOTHER LEAKING/BROKEN FORD F150 4.2L v6 ENGINE

11/16/2005 ~ Go in for a routine oil and lube. Attendant gives me details, I have air filter replaced and coolant added because it was low.

2/23/2006 ~ Go in for my routine oil and lube. I ask the attendant to look at the coolant, I tell him that it keeps getting low. Sure enough he comes back and lets me know its very low, did I want to put coolant in it.

4/28/2006 ~ I go to my 97 F-150 to head out to an interview, shirt and tie, cup of coffee and paperwork in hand. Put the key in the ignition and it wont turn over. It isn't the "battery is dead" won't turn over, its a "I wanna turn over but I can't" ttunr over and I call my mechanic. He arrives and gets out his jumpers to see if it is a dead battery.

We look at the starter, electrical everything and can't seem to figure it out. He says to me, "you dont have very low or little coolent, put some in the resevior" He asks me if I noticed anything odd, any hesitation the previous day, I tell him no, I lterally drove 3 miles to go to the market and that was it for driving that day.

He asks me to put it in reverese and we try and push it backwards to turn the motor over. It won't budge, at this point he says there has to be something in the cylinder(s), gas, water, oil, something and we'll pull the plugs and see what comes out tomorrow (4/29/2006).

I can not beleive that my motor has seized with no real warning, no noticable heat issue. Sure it has 129,600 miles on it, but I care for it well enough. So late at night realizing that I am likely going to have some big mechanical work done I "google "Rebuilt Motor for 97 F-150"" and see 4th item listed "I have a '97 F-150 4.2L leaking coolant." This grabs my attention as it had become almost routine and I find this thread. Then I find this thread and this notice!

I will find out how bad the damage is later today, I will post again what comes out of the plugs, I am pretty sure it will be coolant and if so I will file with the NHTSA. ~ http://www-odi.nhtsa.dot.gov/home.cfm

If you have a 4.2 L V6 and you are noticing coolant loss or hard starts then please have your front and intake gaskets looked at, it can save your truck! Mine is a maybe at this point. Also, if you had a 4.2 L V6 that locked or threw a rod and you had issues with coolant then please sign the compliant form here - http://www-odi.nhtsa.dot.gov/home.cfm








SHUX
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,419
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Originally posted by: Ornery
God forbid we stick with what works! Imagine a nice "old tech" engine with fuel injection. That's a compromise I could live with!

It has nothing to do with "what works".

It has everything to do with shoddy engineering.

Look, I'm as big a fan of KISS as the next person.. But the advancements in engine technology do serve a purpose. Modern engines are more efficient, more reliable and have more power per cubic inch of displacement than engines of the past, as a whole.. Shoddy engineering/designs aside.
 

Shuxclams

Diamond Member
Oct 10, 1999
9,286
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It appears that the Lower Intake Gasket issue that was talked about in those threads is indeed the culprit. Here is the plug freashly pulled from Cy 2. -

Wet Plug

Here is what happened when the plug came out -

Coolant Leaking

And when we turn the motor over -

Coolant Spray

Good news about this however is that there is no knocking or hesitation when its turning, it sounds very clean and it appears that since we didnt get it to turn or that we didnt push it to hard to get it to turn over that I may have escaped a new motor. I am going to need a bunch of gaskets..... in particular the Lower Intake Gasket and the upper manifold etc.... it will run again, I just hope it wasnt damaged.


Agian, if you have had an issue with this you should add your voice to those who have filed a compliant.


SHUX
 

OS

Lifer
Oct 11, 1999
15,581
1
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lol, hydrolock from coolant. That's like drowning in your own blood for no reason.
 

jagec

Lifer
Apr 30, 2004
24,442
6
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Originally posted by: OS
lol, hydrolock from coolant. That's like drowning in your own blood for no reason.

LOL, he's just lucky THIS flaw doesn't cause the car to catch on fire as well:)

 

Rubycon

Madame President
Aug 10, 2005
17,768
485
126
Originally posted by: OS
lol, hydrolock from coolant. That's like drowning in your own blood for no reason.


A person can drown in a bowl of chicken noodle soup too!
 

Nebor

Lifer
Jun 24, 2003
29,582
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I always just assumed the 4.2L was a v8. That's way too big for a V6.
 

Minerva

Platinum Member
Nov 18, 1999
2,129
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Originally posted by: Nebor
I always just assumed the 4.2L was a v8. That's way too big for a V6.

Chebby's Vortec is a 4.3 and is super duper reliable. :)

But of course we're talking about FORD right? :p

<--- Mopar Girl :D
 

Ornery

Lifer
Oct 9, 1999
20,022
17
81
Originally posted by: Eli
Originally posted by: Ornery

God forbid we stick with what works! Imagine a nice "old tech" engine with fuel injection. That's a compromise I could live with!
It has nothing to do with "what works".

It has everything to do with shoddy engineering.

Look, I'm as big a fan of KISS as the next person.. But the advancements in engine technology do serve a purpose. Modern engines are more efficient, more reliable and have more power per cubic inch of displacement than engines of the past, as a whole.. Shoddy engineering/designs aside.
Fvck overhead cams, and especially screw the "nylon-composite air intake" BS. Gawd, all that trouble and for what?

Everything old is new again...
 

Minerva

Platinum Member
Nov 18, 1999
2,129
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Yeah I'm as American as the hot dog and the pushrod V-8! God bless America! -M
 

Shuxclams

Diamond Member
Oct 10, 1999
9,286
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Originally posted by: Minerva
Originally posted by: Nebor
I always just assumed the 4.2L was a v8. That's way too big for a V6.

Chebby's Vortec is a 4.3 and is super duper reliable. :)

But of course we're talking about FORD right? :p

<--- Mopar Girl :D



I would love to have Mopar, but I was until yesterday very happy with my F-150.....

Catch fire from Hydrolock? Hmmmmm





SHUX
 

Kaervak

Diamond Member
Jul 18, 2001
8,460
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Damn, here I am bitching about my Saturn's AC system sh!tting itself, that's nothing compared to this.
 

Vic

Elite Member
Jun 12, 2001
50,422
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Liquids cannot be compressed. Hope that you didn't actually turn it over before you pulled the plugs out or you probably bent a rod/crank/broke a piston. Sorry to hear.

Ornery, for God's sake, the Ford Essex V6 is a Windsor-derived OHV pushrod engine. Not OHC. And EFI had nothing to fscking do with this.
 

Shuxclams

Diamond Member
Oct 10, 1999
9,286
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Originally posted by: Vic
Liquids cannot be compressed. Hope that you didn't actually turn it over before you pulled the plugs out or you probably bent a rod/crank/broke a piston. Sorry to hear.

Ornery, for God's sake, the Ford Essex V6 is a Windsor-derived OHV pushrod engine. Not OHC. And EFI had nothing to fscking do with this.


We didnt push it too far and only turned it over after the plugs were out. When it cranked over it sounded smotth and there doesnt appear to be any knocking or odd sounds..... it actually sounds better than it has. :p We are going to replace the gaskets and give it a whirl..



SHUX
 

Ornery

Lifer
Oct 9, 1999
20,022
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81
I'm talking about MY engine, which is all awesome "new technology" with all the wonderous "benefits" that come with it, like plastic intake manifolds, bulk and complexity of SOHC, and lack of power of a puny V8.

I'll take the "old tech" with EFI thrown in as a nod to new technology. Change for the sake of change just leads to problems like "coolant in the intake". They made these things for decades without a hitch, now all of a sudden things have to get fancy. Good plan!
 

Nebor

Lifer
Jun 24, 2003
29,582
12
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Originally posted by: Minerva
Originally posted by: Nebor
I always just assumed the 4.2L was a v8. That's way too big for a V6.

Chebby's Vortec is a 4.3 and is super duper reliable. :)

But of course we're talking about FORD right? :p

<--- Mopar Girl :D


Terribly inefficient though.
 

OS

Lifer
Oct 11, 1999
15,581
1
76
Originally posted by: Ornery
I'm talking about MY engine, which is all awesome "new technology" with all the wonderous "benefits" that come with it, like plastic intake manifolds, bulk and complexity of SOHC, and lack of power of a puny V8.

I'll take the "old tech" with EFI thrown in as a nod to new technology. Change for the sake of change just leads to problems like "coolant in the intake". They made these things for decades without a hitch, now all of a sudden things have to get fancy. Good plan!


one thing nice about plastic intake manifolds is they don't heatsoak and make the engine lose power like metal ones.

It's also easier for them to make the runners on plastic manis nice and smooth. Metal you still get flash, casting roughness, etc.



i wonder what the benefit to running coolant through the intake mani is, many cars still don't.

 

OrganizedChaos

Diamond Member
Apr 21, 2002
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interesting. the 4.0L OHV (note not the SOHC they have there own issues) is also known to have problems with the lower intake manifold gasket.
 

OrganizedChaos

Diamond Member
Apr 21, 2002
4,524
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Originally posted by: OS
Originally posted by: Ornery
I'm talking about MY engine, which is all awesome "new technology" with all the wonderous "benefits" that come with it, like plastic intake manifolds, bulk and complexity of SOHC, and lack of power of a puny V8.

I'll take the "old tech" with EFI thrown in as a nod to new technology. Change for the sake of change just leads to problems like "coolant in the intake". They made these things for decades without a hitch, now all of a sudden things have to get fancy. Good plan!


one thing nice about plastic intake manifolds is they don't heatsoak and make the engine lose power like metal ones.

It's also easier for them to make the runners on plastic manis nice and smooth. Metal you still get flash, casting roughness, etc.



i wonder what the benefit to running coolant through the intake mani is, many cars still don't.

its a convienent way to get coolent from one side to the other.
 

radioouman

Diamond Member
Nov 4, 2002
8,632
0
0
Originally posted by: Nebor
Originally posted by: Minerva
Originally posted by: Nebor
I always just assumed the 4.2L was a v8. That's way too big for a V6.

Chebby's Vortec is a 4.3 and is super duper reliable. :)

But of course we're talking about FORD right? :p

<--- Mopar Girl :D


Terribly inefficient though.

And don't try to run them much past 150,000 miles without some careful inspection of the head and head gaskets...

<--- Mopar Guy :D
 

Shuxclams

Diamond Member
Oct 10, 1999
9,286
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My question is why hasnt something been done about this? It seems to me there is quite a lot of people expereincing this problem.











SHUX