Coolant in the valley! - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 03-31-2013, 04:04 PM Thread Starter
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Coolant in the valley!

So i have been chasing a Coolant leak, I suspected the water pump, or hoses, worst case i was afraid of it being the oil cooler. Yesterday i washed the engine and let it sit. Today I put on the pressure tester and watched it drip down under the front of the engine on the drivers side. As i traced the leak upwards i found it was coming around the HPOP cover and there was coolant in the valley.

A couple things i know
- There is no coolant in the oil
- It is a slow leak under normal operations
- The engine does not have 25K miles on a re-build, a bad plug of some sort? freeze or otherwise
- This truck has never been a daily driver, and gets occasional use for hunting and fishing and such
- The rig is a 94.5 with the manual tranny

So my question, has anyone had similar issues? Is it possible that the i have a leak in the timing cover? Any help would be great
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post #2 of 9 Old 03-31-2013, 06:36 PM
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I've never really heard of coolant in the valley before. How much coolant is in the valley? Did you check heater core hoses?
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post #3 of 9 Old 03-31-2013, 07:27 PM
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There are freeze plugs on the front and back of the heads, but i don't see any way that coolant could get into the valley from them. Only thing i could see is a hose leaking, or a cracked block/head, or maybe a blown HG.

Jimmy
97 F-250 ECLB 7.3/E4OD/4wd, 216k miles: FFD 250/200%'s, stock turbo, built trans, e-fuel, Swamps IDM, shimmed 910's, Melling LPOP, welded cam gear/modified pick-up tube. Built and tuned by me

97 F-250 ECSB project truck:250/2's, Gen 3, S468, SD axles, studs/springs, ZF-6
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post #4 of 9 Old 03-31-2013, 08:45 PM Thread Starter
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I could look down the seam where the heads and block meet. No fluid or wet block. I just saw that there is a puddle in the valley. Not very deep, just that there is some green fluid.

I checked the hose from the pump to the heater, but now that I think of it I did not check the other one. I wonder if the fan could have blown a little bit of coolant backwards and it pooled in the valley?

My next step is to flush out the valley and blow it dry with air, then start dry and pump it up again.

I thought it was coming from the area under the drivers side of the HPOP in the front. Is there a passage between from the water pump through the front timing cover?
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post #5 of 9 Old 04-01-2013, 06:45 AM
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Green fluid in the valley could be diesel. Coolant would have a hard time finding its way up there.

97 F350 CCLB 4x4 PSD
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post #6 of 9 Old 04-01-2013, 08:48 AM
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Yeah my bet would be fuel in the valley not coolant



1997 f350 4x4 off road.
353k miles
Stage 1 swamp injectors. TS chip. Leveled on 35" Federal tires and black 18 inch pro comp wheels
3" downpipe into 5" straight pipe 6" tip. (Diamond eye)

1987 Chevy 1ton lifted 24 inches on 53s. Duece and a half transfer case. Mud truck.
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post #7 of 9 Old 04-01-2013, 04:33 PM
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Ya I'm gonna have to say its probably diesel. Check ur fuel bowl drain and the 3 fuel lines coming off the pump like to leak as well



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post #8 of 9 Old 04-17-2013, 06:00 PM Thread Starter
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A painful update. Started finding a small amount of snot under the valve covers and then it showed up on the dipstick. Coolant in the oil. Not much but it was there. Took it to a good mechanic cause I don't have time working 7-12's. Timing cover gasket.

He also pressure checked the coolant system while looking and under the valve covers. He pulled the fuel filter and it was clean. Compression was good, no oil in the radiator.

It was showing up as a light drip over the starter. And would drip under the power steering pump. I hope the cover isn't cracked
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post #9 of 9 Old 04-18-2013, 07:28 AM
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Sucks for your find but for a ray of light this will give you the opportunity to install a 96-97 front cover and then you can run a SD HPOP.

Matt
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