Delayed coolant leak - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 07-07-2008, 07:16 PM Thread Starter
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Delayed coolant leak

I own a 2005 F-250 6.0 with 130k on it and I recently discovered a coolant leak. It does not leak when it's running. Truck does not run hot. It does not burn it and if I drive it everyday it is fine with no coolant loss. Only if it sets 20 to 24 hours it will puke from the front. It is not coming from the water pump and is not the EGR cooler. I have read that the oil coolers sometime go on these trucks but no oil in coolant or coolant in oil. I know I should just drive it everyday but it works hard and needs a day off like me occasionally. I'm looking for anyone who may have same problem to offer a fix. PS Truck runs great and has never had anything other than routine maint. Thanks, TD

Last edited by turbo dave; 07-07-2008 at 07:19 PM.
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post #2 of 12 Old 07-07-2008, 07:19 PM
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These 6.uh o are having their issues. Seems to be their week link.
Any Smoke?

Lloyd Vice Director of Virginia Strokers
2006 F350 6.0L SuperDuty Lariat 4x4
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post #3 of 12 Old 07-07-2008, 07:21 PM Thread Starter
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no smoke and runs great
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post #4 of 12 Old 07-07-2008, 07:28 PM
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Send it in for warranty. I would have the coolant pressure tested. Radiator cooler, freezeplug, hose clamp loose
Hope it's a simple fix for ya!!
keep it bumped to the top. Hopefully a tech will chime in for ya

Lloyd Vice Director of Virginia Strokers
2006 F350 6.0L SuperDuty Lariat 4x4
Magnaflow 4" S.S. Turbo Back, Lost Cat, 5" S.S. Tip
Custom Tuned SCT
6" Fabtech 4-Link Suspension- Dirt Logic Shocks-Dual steering Stabilizers
S.S. Brake Lines
Fumoto oil Drain Valve
Accufab Polished Elbow
BFG 37"x12.5"x18" Load "D" All Terrains
ARP Head Studs
EGR Delete
'03 Turbo Swap


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post #5 of 12 Old 07-07-2008, 07:29 PM
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OHHH...... sorry for my rudeness!!
Welcome to the org!!

Lloyd Vice Director of Virginia Strokers
2006 F350 6.0L SuperDuty Lariat 4x4
Magnaflow 4" S.S. Turbo Back, Lost Cat, 5" S.S. Tip
Custom Tuned SCT
6" Fabtech 4-Link Suspension- Dirt Logic Shocks-Dual steering Stabilizers
S.S. Brake Lines
Fumoto oil Drain Valve
Accufab Polished Elbow
BFG 37"x12.5"x18" Load "D" All Terrains
ARP Head Studs
EGR Delete
'03 Turbo Swap


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post #6 of 12 Old 07-07-2008, 07:31 PM Thread Starter
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I remember reading somewhere that the oil cooler will drain to the outside to prevent coolant in the oil but not sure. It may have been leaking a long time because it is rare for truck not to work every day. I have a few weeks off and every day if it is not run it will lose about a quart right around noon and it is coming from the front. No coolant in valley with oil cooler, none from the rear and not from water pump. It's weird and I'm at a loss.
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post #7 of 12 Old 07-07-2008, 07:34 PM
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Checked you oil
Coolant loss is going somewhere.
You stated leaking in front of engine. NO PUDDLES??
Heater Core? Floor board on passenger side wet?

Lloyd Vice Director of Virginia Strokers
2006 F350 6.0L SuperDuty Lariat 4x4
Magnaflow 4" S.S. Turbo Back, Lost Cat, 5" S.S. Tip
Custom Tuned SCT
6" Fabtech 4-Link Suspension- Dirt Logic Shocks-Dual steering Stabilizers
S.S. Brake Lines
Fumoto oil Drain Valve
Accufab Polished Elbow
BFG 37"x12.5"x18" Load "D" All Terrains
ARP Head Studs
EGR Delete
'03 Turbo Swap


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post #8 of 12 Old 07-07-2008, 07:37 PM
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I seem to remember a Ford recall on coolant level. If you keep refilling about a quart every so often and see no leaks. I seem to think Ford dropped the coolant level a bit.

WHERE IS THAT COOLANT GOING

Lloyd Vice Director of Virginia Strokers
2006 F350 6.0L SuperDuty Lariat 4x4
Magnaflow 4" S.S. Turbo Back, Lost Cat, 5" S.S. Tip
Custom Tuned SCT
6" Fabtech 4-Link Suspension- Dirt Logic Shocks-Dual steering Stabilizers
S.S. Brake Lines
Fumoto oil Drain Valve
Accufab Polished Elbow
BFG 37"x12.5"x18" Load "D" All Terrains
ARP Head Studs
EGR Delete
'03 Turbo Swap


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post #9 of 12 Old 07-07-2008, 07:38 PM Thread Starter
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Thanks, warranty is up. Checked all the usual suspects and has been pressure tested ( checked OK and new degas cap) but it was hot at the time. It doesn't lose a drop if it runs everyday only when it sits and only for 20 to 24 hours. Beginning to wonder if it's haunted.
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post #10 of 12 Old 07-07-2008, 07:41 PM Thread Starter
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coolant is dripping on the ground from the front. about a quart when it does. checked water pump, hose fittings, thermostat all sealed. I'm suspecting the oil cooler from where I see it coming from but I'm not that familiar with it
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