Need Help! Loosing coolant - can't figure out where it is going! - Ford Powerstroke Diesel Forum
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Old 11-21-2010, 05:45 AM
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Need Help! Loosing coolant - can't figure out where it is going!

I know there has been a couple of threads about this, but I have not found anyone who has posted the solution.

Here is my story:

I bought an 08 F350 CC Diesel in April with 35000 miles on it. When I changed the oil at 40,000 miles, I noticed coolant was low. I have not seen any evidence nor smelled anything, so I added to bring it up to the middle of the marks. Then I marked the level with a magic marker. Sure enough, the level would drop about 1/16" every week or so.

I brought it to the dealer, they pressure tested it and said there is no leak.

The day after I got it back from the dealer, I noticed antifreeze on the garage floor - radiator started leaking.

Brought it back in and they replaced the radiator (not under warantee) $950.

So now I have a brand new radiator, but I am still losing the same amount of coolant as before - no smell, no antifreeze on the floor.

Does anyone have any idea where I should look next?? The truck runs fine and does not produce any white smoke.

Thanks in advance as I am stumped!
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Old 11-21-2010, 09:22 AM
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I would think...the is a issue with collant leaking into the motor....EGR is going bad. A friend of mine had this happen, the motor was replaced the truck on had 59k miles. Good luck in resolving this problem .....keep us posted...
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Old 11-21-2010, 10:03 AM
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Thanks for the reply. When you say EGR going bad - do you mean the EGR coolers or the valve itself - mine has the water cooled EGR valve? The dealer said they pressure checked the system and the coolers are good (so they say....)
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Old 11-21-2010, 10:13 AM
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Sorry to not be able to help. Just curious why they didn't replace the radiator under warranty?
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Old 11-21-2010, 11:20 AM
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If your loosing coolant and it's not on the ground, I would think it has to be the EGR cooler. Is there some way to get a sample of the oil....test the sample for coolant. I have not had this issue with my truck.....but it has it's forth radiator in it....you radiator should have been covered under the warranty....100K engine warranty.....you need to check on that ....good luck...
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Old 11-21-2010, 12:08 PM
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Quote:
Originally Posted by Smoke2008 View Post
If your loosing coolant and it's not on the ground, I would think it has to be the EGR cooler. Is there some way to get a sample of the oil....test the sample for coolant. I have not had this issue with my truck.....but it has it's forth radiator in it....you radiator should have been covered under the warranty....100K engine warranty.....you need to check on that ....good luck...
I don't get why I was charged for the radiator, but dealer says rad is not covered by 100k warrantee. I have an oil test coming this week so I should know if it is going into the engine
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Old 11-22-2010, 04:01 PM
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Radiators are not covered under the engine warranty unless it is thermostat problem. TSB out on this has became even tighter for dealers. Many radiator issues have been reported and currently nobody is able to make an aftermarket radiator until Ford releases the rights for this. Check out this link.Dropped her off at stealership
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Old 11-22-2010, 04:45 PM
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take a look under your hood around the rad hoses and egr coolant hoses. you'll have telltale white residue anywhere there's a leak. a lot of times you can have a small leak and nothing will ever hit the ground.

also keep checking your level for the next couple days. it's common to still have a little air that needs worked out after any cooling system repair. you'll never get it all out on the first shot.........even using a radkitplus isn't always failsafe.

anytime you suspect an egr cooler leaking you can pull out the EGRT on the top of the vertical EGR cooler....... any wetness on the sensor is a good indication of a leaking cooler.
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Old 11-24-2010, 04:43 PM
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I will check this out. A more immediate problem has popped up now - the vacuum operated auto hubs are not working and we have snow. I am beginning to wish for my 2003 6.0 back....
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Old 11-26-2010, 07:01 AM
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loosing antifreeze

The radiator hose on the driver side of the motor on top of the engine is a common problem its a hose about 2" in diameter it runs from top of radiator down in front of reservoir also under the truck there's a big hose that runs from the passenger side of truck to the the drivers side its a two piece hose the second part runs up to the water pump it leaks at the connection of the water pump that's the other two places too look they are little clips that pull out f.y.I. if you have to change either one of those drain the radiator it makes one damn big mess if you don't!!!!!!!!
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