6.0L Powerstroke brown nasty coolant - Ford Powerstroke Diesel Forum
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Old 10-11-2013, 10:01 AM
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6.0L Powerstroke brown nasty coolant

Im looking at buying an 04 Powerstroke. When i looked at it, the coolant in the reservoir looked like a nasty brownish foam almost. The outside of the reservoir was the same color, so it was apparent that it had been overpressurized and seeped out. The truck still ran great and had lots of power! Truck has 305k miles and had been fleet maintained until ~280k. Im pretty sure these symptoms mean bad headgaskets? I was planning on pulling the cab up and doing the "bulletpoof kit". Is there anything else that could cause that issue with the coolant? Maybe something with the egr? Im just trying to fix the issue without having to dump a **** load of money into the truck.
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Old 10-11-2013, 10:11 AM
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Egr could be ruptured, oil cooler could also be leaking, or of course bad head gaskets

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Old 10-11-2013, 10:16 AM
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Originally Posted by dowmace View Post
Egr could be ruptured, oil cooler could also be leaking, or of course bad head gaskets

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How do i go about diagnosing that? There is a check engine light on. The seller said "The engine light is on for carbon build-up in the motor". I have never heard of that, nor does that make sense for an engine light to come on.
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Old 10-11-2013, 10:40 AM
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Originally Posted by booostinn View Post
How do i go about diagnosing that? There is a check engine light on. The seller said "The engine light is on for carbon build-up in the motor". I have never heard of that, nor does that make sense for an engine light to come on.
What that means is he wants to sell you a truck.
Ask him to pay to replace the CBS (carbon buildup sensor).

If it's the EGR cooler, loosen the coolant res cap and less coolant should leak into the intake. Or just remove it.
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Old 10-11-2013, 10:46 AM
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Originally Posted by RatherBNtheWoods View Post
What that means is he wants to sell you a truck.
Ask him to pay to replace the CBS (carbon buildup sensor).

If it's the EGR cooler, loosen the coolant res cap and less coolant should leak into the intake. Or just remove it.
Hahahaha. Im trying to stay cooperative with him because im getting a killer deal on it. Even if i have to replace headgaskets, im still getting a great deal on a clean 6.0L. Is there any way to identify if it is headgaskets without a compression test? Im trying to diagnose as much as i can before i purchase the truck so i know exactly what im getting myself into and have a little negotiation power. Im hoping it's the EGR or oil cooler, both of those seem to be much less expensive than the whole headgasket kit. Thanks for the help so far guys, I need to learn as much as i can about this troublesome motor before i invest a wad of cash into it
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Old 10-11-2013, 11:39 AM
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If the head is cracked/blown headgasket, put your hand over the coolant reservoir cap with the engine cold and see if it builds pressure when you take your hand off. You'll feel the compression.
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Old 10-11-2013, 04:42 PM
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I bought mine with the same symptom and turned out the oil cooler was plug.
found EGR cooler is already bulletproffed, but you sure want to make sure the headgaskets are not leaking.
I determinate good gaskets by tapping pressure gauge into small coolant reservoir hose.

Last edited by Kajtek1; 10-11-2013 at 04:50 PM.
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bulletproof, coolant, egr, head gasket

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