7.3L powerstroke pressure test coolant goes in oil pan - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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post #1 of 28 (permalink) Old 05-22-2006, 09:06 AM Thread Starter
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7.3L powerstroke pressure test coolant goes in oil pan

Hey all need some help troubleshooting my truck. 2002 7.3 powerstroke ran low on coolant when driving ... level was checked 3 weeks ago. pulled truck over when gauge went high. let cool and added new coolant and checked for leaks. all seamed good but engine oil level was above high line about a inch. drove truck home with no problem.
pressure checked coolant system . when building up pressure with coolant tester around 12-14psi could hear gurgling in engine like air moving threw it.
rechecked engine oil level and oil about 3 inches above high line.drained oil and pure coolant came out for the the first 3 seconds then oil
oil was not milky only black
I watched as pressure was still on system and the coolant keeps driping. question is where to check
Im thinking oil cooler , headgasket, engine front cover, and can coolant get in oil from water pump?
oh yea left no pressure on system last night and coolant plastic tank is empty. and you know where it went. any help on what steps to take to determand the problem. thanks Rob
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post #2 of 28 (permalink) Old 05-22-2006, 09:29 AM
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re: 7.3L powerstroke pressure test coolant goes in oil pan

sounds like it could be your oil cooler but I know from experience oil leaks into coolant when running, oil pressure higher than coolant. When it was running did you get any oil in the coolant resevior??? If no oil in coolant look at your headgasket

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post #3 of 28 (permalink) Old 05-22-2006, 02:52 PM Thread Starter
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re: 7.3L powerstroke pressure test coolant goes in oil pan

I didn't really notice because it was night time and on side of road and coolant was empty when my friend brought me some water to get me home
the tank looked clean not all milky. when I got home I drained the water out and it was brown kinda but it was water not antifreeze.I am confused but do know the coolant gasser tank will empty itself going streight to oil pan without truck running with or without pressure tester, and truck run fine.
I will take any help on this and check truck again tonight thanks again rob
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post #4 of 28 (permalink) Old 05-23-2006, 03:05 AM
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re: 7.3L powerstroke pressure test coolant goes in oil pan

Well Rob, I had my coolent leak into my oilpan with the truck sitting for 2 weeks with the injectors pulled. Found 3 injector tubes cracked at the bottom & had to be replaced. You likely have leaking injector tubes, bad head gasket, cracked head or something in those areas causing your coolent leak. JMHO [img]/ubbthreads/images/graemlins/shrug.gif[/img]

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post #5 of 28 (permalink) Old 05-23-2006, 05:52 PM Thread Starter
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re: 7.3L powerstroke pressure test coolant goes in oil pan

Im getting ready to pull the heads tomarrow. was it hard to see the cracks in the injector tubes. when I get them ill take to machine shop for checks
I was also thinking could the front aluminum cover in any way?
I have searched the web and seams Im the only one who ever had this powerstroke case of coolant in oil question.
I guess everybody goes to the dealer.

I can do the work but cant determine where the problem is so I need to start somewhere . but you know dont want it to be the last place I look. thanks again. Rob My ears are open !
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post #6 of 28 (permalink) Old 05-23-2006, 06:10 PM
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re: 7.3L powerstroke pressure test coolant goes in oil pan

You don't have to pull the heads. Just pull the valve covers and pull the injectors. At least one of the tubes will be cracked.

Also get the oil OUT NOW and get some cheap fresh oil in it and run it for just long enough to circulate the new oil, 24 hrs and your bearings can be toast.

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post #7 of 28 (permalink) Old 05-30-2006, 07:06 PM Thread Starter
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re: 7.3L powerstroke pressure test coolant goes in oil pan

well removed injectors today to check for cracked injector cups and found none
with injectors removed and oil plug out , L filled coolant and it gravety feed to oil pan and i could here a whistle when putting rubber tube to my ear and to oil return holes and where pushrod come up.could hear it without tube. tube directed it to oil return hole
it was loudest at the front oil drain hole in heads.
Its ether headgasket or front cover but you just cant look inside and see anything
cant really drop oil pan to see where coolant is flowing from without raising engine off mounts because only one inch from crossmenber
I put pressure and deffently could here water spray at oil returns and air got to the leak it would whistle and hiss but its like listing in a cave but cant see. if you know what I mean
so that where I am. any idea which way to go now .
how hard is it to see any cracks in the injector cups and when I pressurize the systen wouldnt coolant come into the cups and fill the cyls.
my ears are still open. thanks again. rob
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post #8 of 28 (permalink) Old 05-31-2006, 12:04 AM
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re: 7.3L powerstroke pressure test coolant goes in oil pan

There are 3 or 4 freeze plugs under each valve cover. I blew one clean out and filled the engine with water 124 miles after replacing head gaskets and replacing those freeze plugs. I figured I must have gotten one that was a little undersize.

A little quality assurance would have been better than a mountain of customer service in that situation for me.

I can't remember how the front cover looks regarding water going thru it, but maybe that's leaking.

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post #9 of 28 (permalink) Old 05-31-2006, 12:09 AM
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re: 7.3L powerstroke pressure test coolant goes in oil pan

Rjdavis look into my webshots pictures....

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post #10 of 28 (permalink) Old 05-31-2006, 12:14 AM
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re: 7.3L powerstroke pressure test coolant goes in oil pan

I had to replace all of my injector cups. They press in your heads and require a green lock tite to seal them. To find my leak I put rags in the bottoms and pressurized the coolant system. Don't go over 20 psi. I had drips coming out between the copper injector cup and the head at the top. They aren't too bad to replace if you have the knowledge and right tools. But it should be noticeable if they are leaking out of the top. Unless they are leaking downward through the pistons, but then water would fill your combustion chamber...?

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post #11 of 28 (permalink) Old 05-31-2006, 06:06 AM Thread Starter
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re: 7.3L powerstroke pressure test coolant goes in oil pan

yea I filled coolant system with water and it starts comming out oil pan I put 15psi on system and no water came into any of the injector cups. so after work if im not to tired ill check back to see if there is any othe post thanks a bunch and very helpful pics . rob [img]/ubbthreads/images/graemlins/confused.gif[/img]
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post #12 of 28 (permalink) Old 05-31-2006, 07:51 PM Thread Starter
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found it

Well after debai [img]/ubbthreads/images/graemlins/ooo.gif[/img]ting what to do and talked to a ford tech rep. it turns out that the powerstrokes that came from factory with green antifreeze must be tested for the correct SCAs and kept at the correct level or cavation is taking place behind water pump pitting holes in front cover.
and behold after removing water pump there it was . pitting the size of a penny.
and had one small pin hole just big enough to stick a sowing needle through.
Rep said if useing gold coolant from ford or some fleet type coolant the SCAs dont need to be checked . anyway if I can figure a way to link or post pic I will.
so now it off with $400.00 front cover
remove fuel filter housing, hp oil pump, fan and rad. and everything else.
and raise engine off its mounts 4 inches to unbolt pickup tube from inside botton of front cover.
forget removing oil pan with engine in truckjust clean everything real good and reseal when reinstalling
new cover , all new gaskets and water pump, new belt and Gold coolant. $700.00
my labor
and stll have to clean oil and fuel out cyls and put injectors back
thats life. I'll let you know when its finnished . thank you all ..... rob
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Re: found it

Rob,
Don't be fooled into thinking you don't need to check your nitrite levels in the gold coolant, because it ain't true. I too fell for the gold hype until I tested my coolant a couple weeks ago and it only tested out at 800ppm. 1200ppm is minimum protection with 2.0 being ideal. I took some straight from the bottle and dilluted it with distilled water 50/50 and the results are exactly the same. Do a search and you find lots of good info on this subject. I have since flushed my gold coolant after just 20K and replaced with Fleetrite ELC coolant which is good for 300K, but I will still keep an eye on the protection level.
BTW. I am glad at least you now know what the problem is, be glad you have the ability to fix it because that would be one huge bill from Ferd!!!

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post #14 of 28 (permalink) Old 05-31-2006, 08:05 PM
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Re: found it

My 2000 just showed coolant in oil on my first Blackstone test at 106k. I haven't done anything to locate the problem. It was .08% I am going to check again at 110k. I am hoping it will be something easier than the front cover. I recently replaced my water pump and switched to Rotella ELC. I was watching my SCAs on the green so hopefully I don't have the cavitation issue. I doubt that I can find my problem with a pressure test since the amount is so small. Any suggestions on where to look?

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post #15 of 28 (permalink) Old 05-31-2006, 08:08 PM
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Re: found it

[ QUOTE ]
Well after debai [img]/ubbthreads/images/graemlins/ooo.gif[/img]ting what to do and talked to a ford tech rep. it turns out that the powerstrokes that came from factory with green antifreeze must be tested for the correct SCAs and kept at the correct level or cavation is taking place behind water pump pitting holes in front cover.

[/ QUOTE ]

I thought the cavitation issue was at the cylinders, not at the front cover. [img]/ubbthreads/images/graemlins/shrug.gif[/img]

Classic pump cavitation due to low suction pressure typically pits the impeller in the area where the pressure comes back up to collapse the vapor bubbles.

Was your pitting and the hole near the center of the pump impeller?

Sorry to hear about your problem, but glad that you got it identified and are underway to fixing it.

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