Coolant leak
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Coolant leak
I have a 2009 F150 and I have a coolant leak. I am positive it is not a cracked block or blown head gasket, had this checked by a mechanic already when I first bought it. It loses coolant without even driving it. I filled it up before bed one night and almost all was gone the next morning. Any ideas?
More Turbo
Joined: Jan 2005
Posts: 510
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From: Clinton TN.
If you are talking about the coolant reservoir as the radiator cools it can suck it back into the motor/radiator. If it is parked on a hard surface is there any fluid on the ground below it? Oil over full or milky looking?
If you are sure it is loosing it you need to look for puddles, white smoke from the exhaust or something else like that. Look under the water pump and make sure the weep hole is dry and might try a new radiator cap.
If you are sure it is loosing it you need to look for puddles, white smoke from the exhaust or something else like that. Look under the water pump and make sure the weep hole is dry and might try a new radiator cap.
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Thanks
The answer to your first two questions is no, Nothing underneath and oil is same level as when it was changed. (about a couple hundred miles ago) No white smoke, but have not checked water pump. Thank you siberexpress
Posting Guru
Joined: Sep 2006
Posts: 1,263
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From: New Castle, PA
Check the aluminum block that the oil filter and oil cooler lines connect to. I just had the seals on this leak and replaced . I would loose coolant on the regular but I never had a puddle underneith because it would either burn off or the skid plate would catch it and it would dry up. But I could see it collecting into drips on the underside of that block . Mine was a '12 ecoboost so I'm not sure if yours is the same setup but worth a shot.
Senior User
Joined: Nov 2011
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I would pressure test it and let it sit overnight while pressurized. I've had success finding weird leaks that way.
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Joined: Mar 2000
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From: Saint John, N.B. Canada
I had to replace a heater hose to metal tube on my 2009. The tube runs from under the intake, behind the alternater, to the rear of the engine and down the back of the engine. Hard to get at, but it rotted out at the bottom. I wonder if yours is leaking where it runs under the intake and pooling there. Just a thought. I replaced mine by bypassing the metal tube with heater hose, and running it out the front of the intake instead of the rear. The procedure is also on Youtube.
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Fleet Mechanic
Joined: Jan 2009
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From: Fort Worth
IF that's what's wrong with it, no. It's a few hundred dollars for the Motorcraft part. The Dorman part is much cheaper, but I hear it can have fitment issues. Make sure that's the problem first. Dry everything out well, top it off, and watch for where the leak is coming from.
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