how long do you wait?
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Senior User
Joined: Oct 2011
Posts: 294
Likes: 3
From: Hanover, PA
how long do you wait?
A dumb question really, I know I should take care of this as soon as I can to avoid further damage but I have to ask.
Looks like I have a head issue.
Put a boost guage on the coolant line and I read up to 15 when I get on it. Also have been blowing coolant (only when towing though) is that normal? I would have to assume that even with daily driving unloaded I could still be causing harm?
I was hoping it would be the egr cooler but that has been gone for 2 months and I have made 2 long trips (500 miles) with the same results blowing coolant. Coolant temps only go up over 200 when pulling a longer grade though. I'm driving I-81 in PA.
Anyone know of a good person/shop in the Gettysburg/York PA area?
Looks like I have a head issue.
Put a boost guage on the coolant line and I read up to 15 when I get on it. Also have been blowing coolant (only when towing though) is that normal? I would have to assume that even with daily driving unloaded I could still be causing harm?
I was hoping it would be the egr cooler but that has been gone for 2 months and I have made 2 long trips (500 miles) with the same results blowing coolant. Coolant temps only go up over 200 when pulling a longer grade though. I'm driving I-81 in PA.
Anyone know of a good person/shop in the Gettysburg/York PA area?
Junior User
Joined: Feb 2006
Posts: 77
Likes: 2
A dumb question really, I know I should take care of this as soon as I can to avoid further damage but I have to ask.
Looks like I have a head issue.
Put a boost guage on the coolant line and I read up to 15 when I get on it. Also have been blowing coolant (only when towing though) is that normal? I would have to assume that even with daily driving unloaded I could still be causing harm?
I was hoping it would be the egr cooler but that has been gone for 2 months and I have made 2 long trips (500 miles) with the same results blowing coolant. Coolant temps only go up over 200 when pulling a longer grade though. I'm driving I-81 in PA.
Anyone know of a good person/shop in the Gettysburg/York PA area?
Looks like I have a head issue.
Put a boost guage on the coolant line and I read up to 15 when I get on it. Also have been blowing coolant (only when towing though) is that normal? I would have to assume that even with daily driving unloaded I could still be causing harm?
I was hoping it would be the egr cooler but that has been gone for 2 months and I have made 2 long trips (500 miles) with the same results blowing coolant. Coolant temps only go up over 200 when pulling a longer grade though. I'm driving I-81 in PA.
Anyone know of a good person/shop in the Gettysburg/York PA area?
Not sure what question is specifically being asked. I presume it is not normal and harm is occurring as you accelerate coolant system rubber deterioration and contamination.
Posting Guru
Joined: Nov 2012
Posts: 2,123
Likes: 5
I am not seeing any definate sign of head gasket failure.
The cap normally vents at 16psi You only report 15psi and only under load.
A head gasket leak once the engine is warm will show a sharp rise and fall of pressure in relation to the amount of throttle applied.
Normal unloaded system pressure is 8 to 12 psi sometimes less.
You may have some other coolant issue but not head gaskets I think.
The cap normally vents at 16psi You only report 15psi and only under load.
A head gasket leak once the engine is warm will show a sharp rise and fall of pressure in relation to the amount of throttle applied.
Normal unloaded system pressure is 8 to 12 psi sometimes less.
You may have some other coolant issue but not head gaskets I think.
Lead Driver
Joined: Sep 2012
Posts: 7,832
Likes: 96
From: Manteca,Ca
Are you losing coolant out the Degus , maybe try the new OEM cap. also how full is the degus ? remember the bottle has a new level sticker on them. also any mix in the coolant? milky smell of diesel?
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
If it is a cooling system problem and the truck is simply running hot, that makes it more time sensitive as the headgaskets could be leaking soon after multiple overheating events (if they aren't already). What kind of temps are you seeing on oil and coolant?
Thread Starter
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Senior User
Joined: Oct 2011
Posts: 294
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From: Hanover, PA
Put on a new cap while doing the egr delete. Although just one from the auto parts. Temps look to be doing ok. see 180-190 most of the time for coolant and 185-195 for oil. Deltas are never more than 10 except for the short amount of time the coolant will spike up over 200 to around 210 and the fan kicks on and comes back down after a minute.
Bottle is defiantly not over filled if anything may be on the low side just a bit.
I do have some variation in the coolant pressure depending on how much load the truck is under 5-15.
Bottle is defiantly not over filled if anything may be on the low side just a bit.
I do have some variation in the coolant pressure depending on how much load the truck is under 5-15.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Sounds like HG's to me then. It's not uncommon for the initial stages of failure to blow coolant when towing or driving hard and then not leak under normal/unloaded conditions. It's hard to say how long it might last that way, you could leave your pressure gauge set-up installed and drive by that, but I certainly wouldnt want to be towing anything. If it were mine I'd park it until repairs could be done if at all possible.
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Posting Guru
Joined: Nov 2012
Posts: 2,123
Likes: 5
From the stuff I normally work on your numbers are not out of line.
Then in the fleet a new truck to us was already 2 yrs old and over a 100k miles. We got corporate hand me downs. LOL
Then in the fleet a new truck to us was already 2 yrs old and over a 100k miles. We got corporate hand me downs. LOL
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