what could this be? leaking something and steam/smoke coming from under the hood? - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 03-23-2014, 04:29 AM Thread Starter
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what could this be? leaking something and steam/smoke coming from under the hood?

ok, so I just bought a 2004 f250 diesel 6.0. I bought it on wensday, and drove it everyday till last night(3/21), well on 3/21 we noticed some leaking under the truck, didn't think anything of it, as it still ran good. then later that day, we tried turning the heat on, and it just stayed cold the whole time, and we left, still not thinking anything of it, and when we were driving we started smelling something, don't know what it was. but we pulled over at mccdonalds, and realized it smoke/steam coming from under the hood(most likely steam).

what could this be?

he said the truck has the egr delete kit, and has been bulletbroofed if that matters.
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post #2 of 13 Old 03-23-2014, 06:15 AM
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Look for wetness from the coolant (degas) bottle or a white residue around the bottle. It sounds like you are puking coolant, but you would be able to smell it. I just got mine out of the shop because it was puking coolant when hauling due to blown head gasket and a cracked head. Take it back to the lot or call the previous owner and see if they have done head gaskets.

It could be as simple a a weak coolant cap. Check the coolant level in the bottle. It should be no higher than the minimum mark! If it is above that mark then it will get pushed out the bottle cap. Also, it should not hold pressure overnight, that could be a sign of head gasket failure.

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Last edited by Rcshauger; 03-23-2014 at 06:21 AM.
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post #3 of 13 Old 03-23-2014, 06:20 AM Thread Starter
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It never overheated though....temperate Gage's stayed about half way. Could it still be head gaskets?
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post #4 of 13 Old 03-23-2014, 06:21 AM Thread Starter
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Quote:
Originally Posted by Rcshauger View Post
Look for wetness from the coolant (degas) bottle or a white residue around the bottle. It sounds like you are puking coolant, but you would be able to smell it. I just got mine out of the shop because it was puking coolant when hauling due to blown head gasket and a cracked head. Take it back to the lot or call the previous owner and see if they have done head gaskets.
It never overheated though....temperate Gage's stayed about half way. Could it still be head gaskets?
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post #5 of 13 Old 03-23-2014, 06:28 AM
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If the coolant is puking out of the bottle then there are just a few ways that it could happen.

1. Weak coolant cap. (Should hold pressure to 16 psi)

2. Clogged egr cooler causing coolant to flash boil

3. Cracked egr cooler (accompanied by white smoke out the tailpipe and wetness inside the intake manifold under egr valve)

3. Exhaust getting into the coolant from the head gaskets or cracked heads

If it is coming from the bottle, then these are the usual suspects. Look for leaks elsewhere too

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post #6 of 13 Old 03-23-2014, 06:39 AM
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Originally Posted by case123 View Post
It never overheated though....temperate Gage's stayed about half way. Could it still be head gaskets?
If it has been bulletproof end, then it shouldn't be, unless the previous owner did not mill the heads flat or pressure check them for leaks, manga flux them for cracks.

Look for the source of the leak before you worry about it too much.

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post #7 of 13 Old 03-23-2014, 06:47 AM
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You didn't say what you were doing when you noticed it. If you were just driving around with light driving versus trying to rip all the rubber off the tires could affect where you look after you find the leak. As indicated above, look for the obvious points like the degas bottle. After that, follow every hose and joint, including the heater. Don't forget the valley, the radiator grill/seams and hose barbs.

With no heat, you either lost a lot of coolant from a leak, a bad cap, or you have air moving through the system from a HG issue. Now all you have to find the leak to point you in the right direction.

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post #8 of 13 Old 03-23-2014, 06:58 AM
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Do u have a monitor in the truck to monitor your deltas ( eot ect, ). Could be bad tstat also.

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post #9 of 13 Old 03-23-2014, 07:05 AM
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i wouldn't be jumping to any conclusions a leak that hits something hot enough to steam should be easy to find fill it back up and run it again or air test

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post #10 of 13 Old 03-23-2014, 10:25 AM Thread Starter
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I beleive it's the water pump.....would that cause this?

We filled it back up with coolant and it started leaking again....
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