MAJOR oil leak HELP ! - Diesel Forum - TheDieselStop.com
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6.4L Power Stroke Engine and Drivetrain Discussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008-Up Super Duty trucks. 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 6.4L Power Stroke engine.

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Old 04-07-2012, 01:34 PM   #1 (permalink)
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MAJOR oil leak HELP !

Pulled in the driveway this morning shut the truck off ran in the house for about an hour. go back out to wash the truck and see 2 huge i'm talking like 1ft. x 2ft. puddles of oil under the truck. pop the hood oil all in the valley on the underside of hood above the turbo. clean that oil up and checked dipstick reads full, so I start truck cant see any leaks from anywhere from above. Look underneath and it's just pouring out between bell housing and rear of motor from what I can tell right now. going to power wash it all down and recheck. My question is whats the probability of the leak being the Bed Plate? or other possibilities. I'm still figuring out the 6.4 if it was my 7.3 it would be no problem to figure out and even repair myself. This 6.4 just has too many hoses and crap all over the place, don't really know where to start.
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Old 04-07-2012, 02:15 PM   #2 (permalink)
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Quote:
Originally Posted by shoguy89 View Post
Like the 6.0L engines, the oil cooler is located i the valey, below the oil filter housing. My guess is that you've got an o-ring seal rolled out from one of those places. The oil that leaks under pressure pools in the valley and moves to the rear of the engine and falls to the ground at the back of the engine.

Look deep into the valley and se if you can see where the leak is coming from. Hopefully, it's not too far down.

Will start there. brings back memories of the HPOP plug o-ring blowing out on my 7.3 multiple times.
Thanks for the reply
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Early '99 F350 stamp date 02/98 4X4 SW Reg. Cab Long Bed, Auto, 4'' lift, 35"s, 4" Turbo back straight piped MBPR, Banks cold air, Stage 1 Injectors, TS Beans Tunes, Modded 17,Turbo Master Wastegate, Triple A Pillar GloShift gauges, KCM HPX line, Riffraff FPx, Black CPS,
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2008 Job 1 6.4 F350 CCLB Lariat AFE CAI, 4" downpiped straight back, H&S Mini Max
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Old 04-07-2012, 07:48 PM   #3 (permalink)
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Fixed ! Oil filter oring
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Early '99 F350 stamp date 02/98 4X4 SW Reg. Cab Long Bed, Auto, 4'' lift, 35"s, 4" Turbo back straight piped MBPR, Banks cold air, Stage 1 Injectors, TS Beans Tunes, Modded 17,Turbo Master Wastegate, Triple A Pillar GloShift gauges, KCM HPX line, Riffraff FPx, Black CPS,
Hutch and Harpoon Mod. AE, 208,000 miles

2008 Job 1 6.4 F350 CCLB Lariat AFE CAI, 4" downpiped straight back, H&S Mini Max
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Old 04-08-2012, 04:40 PM   #4 (permalink)
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Whew....that was an easy fix then!

Odd that it showed that there was on 'oil loss' on the dipstick though?

Bedplate, why the heck wasn't the block made all in one piece, eliminating one gasket...or place for an oil failure?
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Old 04-09-2012, 12:37 AM   #5 (permalink)
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what was wrong with your oring?
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Old 04-09-2012, 06:37 AM   #6 (permalink)
 
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Originally Posted by Powerstroke2000 View Post
Whew....that was an easy fix then!

Odd that it showed that there was no 'oil loss' on the dipstick though?

Bedplate, why the heck wasn't the block made all in one piece, eliminating one gasket...or place for an oil failure?
The split block is much stronger.

The block parts at the crank centerline. This makes the lower part of the block one piece and very strong. There are no more individual main caps. The main caps are incorporated into a one rigid member. This also allows for automated assembly. These things are built by robots so the bedplate feature helps them get it together. All the fasteners are torqued at the same time and the bedplate is sealed with a silicone rubber rope seal that fits in a groove on the bedplate and seals against the flat on the bottom of the block.
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Old 04-09-2012, 09:04 PM   #7 (permalink)
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Fixed ! Oil filter oring
Yeah, mine failed also. When I loosened the cap,it came apart. It had broke.
Don't know why, never had it happen before. They may be defective. Made in China?
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Old 04-09-2012, 09:48 PM   #8 (permalink)
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A new o ring come with every new filter. Maybe it wasn't replaced. That's horrible if it were defective.
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Old 04-09-2012, 11:21 PM   #9 (permalink)
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what was wrong with your oring?
I would say Human error on my part. for some reason the o-ring slipped out of the groove on the filter cap and ended up at the top of the cap. Strange that it first showed up now, I changed the oil 2000 miles ago.
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Hutch and Harpoon Mod. AE, 208,000 miles

2008 Job 1 6.4 F350 CCLB Lariat AFE CAI, 4" downpiped straight back, H&S Mini Max
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Old 04-11-2012, 05:21 AM   #10 (permalink)
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at least it was that and nothing major.
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Old 04-11-2012, 10:01 AM   #11 (permalink)
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I would say Human error on my part. for some reason the o-ring slipped out of the groove on the filter cap and ended up at the top of the cap. Strange that it first showed up now, I changed the oil 2000 miles ago.
Be sure to lube the o-ring before install. Don't think it was your fault. Also, be sure to install it rather tight. A loose cap may allow the oil to escape and damage the o-ring.
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