Slow coolant drip, driver's side - see pic - Ford Powerstroke Diesel Forum
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Old 06-20-2013, 07:57 AM
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Slow coolant drip, driver's side - see pic

Just picked up a nice '02 F250 Lariat yesterday. I'm very pleased with it so far. Only issue seems to be a slow coolant drip from the front driver's side. I have no experience with Powerstroke engines, so just looking for some help to identify the source and solution to the leak. I drove it about 120 miles up and down the Rockies yesterday to get it home, and the temp was perfect all the way. All gauges read normal the whole way. Just noticed the drips on the ground this morning.

FWIW, before I bought it it was in the shop for a new thermostat. It looks to me like they overfilled the coolant... it's about 1/4" or 1/2" above the hot line when cold. Could it just be an overfill situation, or do I have a radiator leak to repair? Or something else entirely? Thanks!

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Old 06-20-2013, 11:35 PM
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i'd say a crack in the radiator. Clean it up, and while idling, check for the source.
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Old 06-21-2013, 10:23 AM
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I took about 1/3 gallon of coolant out yesterday to get it to the max line. It hasn't dripped since. Could it be related to an overfill, or is it maybe a small crack in the radiator that will only leak when it's overfilled? Or is it just coincidence that it hasn't leaked since I lowered the level?
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Old 06-21-2013, 06:17 PM
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I looked over the radiator pretty closely, and can't find any indication of a crack or a leak. Still an occasional drip, though. I was hoping it was just related to the overfill, but apparently not. Another picture for reference:

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Old 06-21-2013, 08:58 PM
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Looks like you have a bad rad tank, probably right at the rad mount. pull the upper supports and lift the rad a little, you might be able to better see what is between the rad cushion and the tank.
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Old 06-21-2013, 09:13 PM
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I presume the only fix for that is a new radiator, right? Is it the sort of thing that's likely to rupture, or do you suppose it will hold up for a while? I'd like to flush it and switch to ELC, but it would be nice to wait a month or two, and then do the radiator replacement and switch to elc....
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Old 06-21-2013, 09:32 PM
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Keep in mind the amounts of pressure going through that radiator. if there is a crack it could be possible it will grow then you'll really have a situation when you're far from home ya kno.. I've been in the same position where i'd like to wait a month or so to replace something so if you wanna wait then just keep driving it but keep VERY close attention to your temp gauge and check your coolant level every day before operation... that's what i'd do/ what i have done in the past lol
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Old 06-21-2013, 09:33 PM
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Or you could just have a crack in the radiator tank like what was said before..
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