New head gasket? - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 09-05-2012, 03:13 PM Thread Starter
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New head gasket?

Fells, ive rebuilt the oil cooler with new oring kit and it took two days to almost completly mix the coolant in the oil again. Ive got milkshake in the engine and I can only think its the HG. What bothers me is I see no crankcase pressure in the coolant rez. When full and running.

Ive heard of guys having to TAKE THE CAB OFF to do a fukin head job! Whats the best way to get them out and new ones in?

1995 F250 ECLB

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post #2 of 11 Old 09-06-2012, 07:14 AM
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Well, when you change the oil, there's still 2-3 quarts in the HP oil system, in the reservoir and all the lines. That oil will still be coolant-contaminated, and will mix with the new oil when you run the engine. _Maybe_ that's what you're seeing? Might be worth changing the oil one more time (and even go the dork route and siphon out the HPOP res), see how it looks after a couple days.
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post #3 of 11 Old 09-06-2012, 07:32 AM
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Bad injector o-rings? Or maybe that's for fuel in oill...

1996 F250 7.3 PSD 4x4 - "Dally"
270k miles
It's got some go fast stuff
Sitting on 2006 F-350 axles and suspension

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post #4 of 11 Old 09-06-2012, 08:13 AM Thread Starter
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If that was the case then why would my coolant rez go from full to almost empty in 2 days?

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post #5 of 11 Old 09-06-2012, 08:41 AM
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I was thinking of fuel in oil, my bad. Re-reading your original post about no pressure in the reservoir, usually 9(from what I've read) a blown HG will result in bubbles in there from combustion pressure making it's way into the water jackets from the bad HG. So there's no pressure in the reservoir when it's at normal temp?

Is the weep hole on the water pump leaking at all?

1996 F250 7.3 PSD 4x4 - "Dally"
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It's got some go fast stuff
Sitting on 2006 F-350 axles and suspension

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post #6 of 11 Old 09-06-2012, 09:23 AM
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Quote:
Originally Posted by nine6stroker View Post
Re-reading your original post about no pressure in the reservoir, usually 9(from what I've read) a blown HG will result in bubbles in there from combustion pressure making it's way into the water jackets from the bad HG.
That's only if it blows between a coolant jacket and a combustion chamber. If it only blows between a coolant jacket and an oil passage, you won't get combustion gas in the coolant; you'll only get coolant and oil commingling.
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post #7 of 11 Old 09-06-2012, 09:32 AM
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Oh ok. I've actually never had a vehicle with HG issues, so I'm just going off what I've read on here.

1996 F250 7.3 PSD 4x4 - "Dally"
270k miles
It's got some go fast stuff
Sitting on 2006 F-350 axles and suspension

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post #8 of 11 Old 09-06-2012, 10:17 AM
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Mad has a good point.. you might still have contamination in the oil.

It might be the oil cooler again though....
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post #9 of 11 Old 09-06-2012, 10:20 AM
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maybe your coolant dropped a bit cause there was air in the system. and maybe there was still coolant in the oil system as they said. it doesnt hurt to try 1 more oil change as they stated.


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post #10 of 11 Old 09-06-2012, 06:57 PM Thread Starter
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Ill try it and see where it gets me. This truck has been a nightmare and i have Only around 1,700 miles on it.

1995 F250 ECLB

When your nose deep in sh!t, keep your mouth shut.
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