Ford 6.0L Power Stroke Diesel :: 2003 - Coolant Leak Slowly While Not Running And Quickly When Driving
Aug 8, 2015
My 2003 6.0 has a coolant leak. It leaks slowly while not running and more quickly while running. I have about an 8 mile drive to work every day, I can make it there and back without having to add coolant but I'm cutting it pretty close by the time I get home. In short I go from the max fill line to bone dry in about 24 hours.
With the truck running I can see water getting slung around all over the front of the engine but the majority of it seems to be coming from around the two larger pulleys in the middle. I've read that this can either be the crankshaft seal or the water pump, any way to know for sure? Any other possibilities?
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I have a coolant leak somewhere on the top of the engine running down to the oil pan and bell housing. I have done some research and discovered it could be the coolant inlet tube to the turbo.
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I was driving and went to accelerate quickly and had no power, checked the boost gauge and it had very low boost. Continued like this the rest of the drive, all gauges normal, no check engine light, not towing or hot. Got home then next time out it was back to normal.
Someting to be concerned about? Or just a computer hiccup. Truck is '13 with 66k.
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When I got my 2016 back at the end of last October, the pink coolant in the main degas bottle was just visible in the clear top half of the bottle. By the time 5k miles rolled around, the coolant was no longer visible in the clear section. At oil change time, the dealer "topped" it, resulting in it being visible in the tank again. 3k miles later, the coolant has disappeared below the clear part of the bottle again. What gives? The secondary bottle level has not budged. Its clearly not losing a lot, but it is definitely going down slightly.
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I am having a heck of a time finding this coolant leak. It drips off the power steering pump. I replaced the upper radiator hose and the heater "y" hose that goes to the bottom of the Degas bottle. I recently replaced the lower radiator hose as well. So the truck runs normal. When the system is under pressure I do not see any leaks. But after the engine is completely cold it starts leaking a small puddle of coolant. Its appears to be coming from the power steering pump. But I am sure its something above or near it. This is on my 2005 Excursion with a 6.0. Can the water pump be going bad and leaking this direction. I would expect a water pump to leak straight down the middle of the engine. What to look for? The thermostat seal stays dry. but it has to be in that area. What is really messing with me is. When it is hot and pressured up It does not seem to leak. Only after it has been sitting for hours and cools off..........What the heck!
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The same day that I noticed my coolant temp was running high as I was driving around in my 2011, i was driving around in my corn field cutting wood and i noticed i was dragging something under the truck. when i got out and looked under the truck, there was coolant running down all over the bell housing and oil pan. i was a bit worried that it was my head gaskets leaking but once i got it in the shop and looked at the heads, all looked good. i wasnt sure where it was coming from! so i looked up common coolant leaks on the 6.7 on youtube.
First video was one of the coolant line on the turbo leaking. so i crawled up on top and shoved a mirror down by the turbo and sure enough i could see coolant leaking around the connector fitting coming out of the turbo. apparently the gasket goes bad around this fitting allowing it to leak. i was just wondering if this is really that common of an issue? I did the work myself. and its not really that hard to get to the turbo, its just time consuming removing all the crap around it. all i had to do was remove some connectors that were attached to the plastic intake and remove the intake then you can reach into that fitting. total time was around 2.5 hours.
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I am in the middle of a several thousand mile road trip, and I am with family in Utah when this evening I noticed a puddle under my 6.0 Excursion.
Coolant leak? - YouTube
The fluid does not smell like typical coolant, but from the location of the drip, I cant think of it being anything else.
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Nothing to be alarmed about, I'm just letting y'all know I have a coolant leak on the front of the motor. It leaks about 8oz. Of fluid/week.
I have been through the radiator issues, 5 in all on my '08 and 1 on my '11 at 52,000 miles. This one is different, I'm pretty sure it's the water pump.
I'll give the official word as soon as I can get it diagnosed. I guess it's because I tow all the time, nothing real heavy, just everyday use. Truck is hardly ever on its own.
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Seen a coolant leak near the back of the block? I did an oil change and noticed coolant on the bell housing.
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I recently had an upper radiator hose bust and ever since I have been having a slight water leak. It appeared to be coming from between the layers of rubber on the new hose which I replaced twice since the incident. Both hoses had water seeping from the same location. This afternoon I plan on doing a pressure test on the cooling system to diagnose where the water may be coming from.
My question is could a loss of pressure cause larger than normal Oil and Water deltas? If I have to replace the radiator is there a particular manufacturer or type I should avoid? Should I try to get a factory replacement from Ford or would an Autoparts unit be sufficient? The original is still in the truck now with 286,000 miles on it.
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I installed a BPD EGR cooler about 4 years ago just as a preventative measure (along with an oil cooler) in my '06 F-250 6.0. About 6 months ago some coolant was found to be coming down the rear of the engine and onto the garage floor but only in the mornings after cooling down and even then not every morning.
A couple weeks ago I did a coolant flush and put the red ELC coolant in and now I can see better where the coolant is coming from. It appears to be coming out from the O-ring between the cooler and the intake manifold. I did check the torque on the stud and bolt and they are tight.
Is there a way the drop the cooler enough to install a new O-ring with out going through the whole process of removing the intake manifold and everything that is associated with that? The thought is daunting...
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I just replaced the oil/egr cooler, stand pipes and dummy plugs along with all suggested upgrades, just filled with oil hooked up batteries and while filing with coolant it started gushing out from under the intake in front. I think I see an o-ring pushed out.. I hope I can lift the intake without removing the turbo!!!
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I have a O6 F250. Egr delete and a new oil cooler 20k ago. I have been dealing with missing coolant for about 6 months. A little here or there but it has gotten really bad the last few weeks. My last attempt was to replace the degas cap. Stopped the missing coolant for a 30 mile trip. Just to clarify it had gotten to the point I was adding one gallon per 20 miles. Needless to say I was thrilled. Next morning I came out to find coolant under the truck. Plastic Y under degass, so I replaced it. 25 miles and none missing. Next morning fluid under the truck. Now it's the egr hose.
Replaced it with a gates hose and new clamps. Fill it up with coolant go inside and its leaking in the same location. Its a pure pleasure to undertake. So I assume these leaks weren't previously leaking because the degass cap wasn't pressurizing the system. That being said the leak is on the oil cooler side of the egr hose. The snap lock fitting that was on the original housing spins around. Should that locking mechanism be removed before the hose is secured and clamped? This is the only thing I can come up with as the culprit. I have searched the information on the site but can't find any mention of it needing to be removed. The clamps are the right width and everything is seated.
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So a little back story. Did the oil cooler a couple of years ago as the deltas were getting high. Coolant flush and new Ford gold. Also welded EGR shut and had PHP reprogram. That was approx 25k miles ago.
Well now I have to fix the EGR because it won't pass smog. But my truck is running hot again BUT only when climbing a grade while towing my toy hauler. As soon as I crest the Temps come down fast. Also my deltas are fine normal driving, which was not the case last time I did oil cooler. My deltas were off all the time.
Also when I shut the truck off and stand in front of it after driving I can hear the coolant system gurgling.
I will be tearing my truck apart next week to fix the EGR and was thinking of doing the oIL cooler but don't want to waste money if that is not the issue. How do you tell if the water pump is bad? Also the fan is working according to scan gauge but doesn't have the big whoosh and squeal like it used to.
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I have a 06 f250 that has a coolant leak in the front of the engine. It's was leaking about a month ago replaced the water pump it stopped. Then about 2 weeks later it started back up again. It only happens when the engine is cold. But once it warms up it starts leaking again. I am confused as all get out on this.
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Coolant seen leaking under passenger door it was running down frame rail looked under hood and seen coolant around the air filter cover . Tank was low 2012 cab chassis 33,000 miles
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The drip pan under my 2005 X 6.0 was relatively full with coolant last week. The leak is intermittent, but persistent. After investigating, it appears to be coming from somewhere on the driver's side on the back of the engine. The coolant is running down the seam where the transmission mounts to the block, but I can't get my mirror back there to see exactly where it's coming from. It's not coming from the side of block and there's no evidence of coolant on top (in the valley).
I've only been doing "city" driving (no towing or highway trips) since before the leak began and the max ECT I've observed is around 205*, with 40-60* ambient temps. It's not overheating, but I have noticed the heater air is cool when I'm at a stoplight, suggesting the coolant level is low (I've refilled coolant once and heater worked fine afterwards).
I have not observed oil in the degas bottle, but have not yet checked the dipstick for coolant bubbles in the oil. Also, FWIW, I had to replace my degas bottle back in October after it cracked on the side. I do use ELC free, red coolant, have a coolant filter and flushed the system about 18 months ago.
Thoughts on source of coolant leak? Don't say head gasket....
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Had a coolant leak I finally traced to the rubber hose on an egr delete (previous owner installed, not sure of brand). Looks like the jackwagon who installed it cranked the clamps way too tight and they eventually split the hose. I have a piece of heater hose that looks like the right diameter and cut to size should fit fine. I guess I am just looking for some reassurance that it would be ok to use in that situation...
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I noticed I was a bit low on coolant and started looking around. Found a drip on the serpentine belt and harmonic dampener. The T-stat is dry and was replaced 1.5 yrs ago with a full flush. Both hoses are fine and there is no coolant near the steering assembly.
I am figuring it is coming from the water pump. I am planning to put in that Bulletproof water pump and Mishimoto silicon hoses. Anything else I should consider before I dive in. I'll put a new T-stat on since the coolant is drained and it is cheap $20 insurance. BTW hoses and water pump are original (7/05 build date).
Additional information - no spots on driveway (from coolant anyway) and single drop on the dampener. No mess anywhere else and I am down about 1/2 gallon - degas is almost empty.
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I've been smelling coolant for a few weeks with no apparent leak. Walk out today, small puddle under truck. Coolant running/drip along seam of engine and trans right in front of downpipe on passenger side. Even with a mirror I can't see up far enough. Looking from top is impossible. What could be leaking up there? Turbo?
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My good friend has a 2011 6.7 and has been dealing with a coolant leak for a few months. Dealership has had the rig a few times and said it passed " a pressure" test etc. and they see no issue, yet he finds a puddle under the truck when after it has been parked. How best to check it out? I'm not familiar with some of the common trouble spots on the 6.7 like I am with the 7.3.
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