Degas bottle running over
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
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From: Concord NC
So it's been running for 4 1/2 months and the pressure building just started? That's not a good sign. I think Kris, Joe, Pete and Dan are right. Sure sounds like you have a blown gasket. I was hoping for an easy fix, didn't realize it had been that long since your repairs. Yes, for me, a good shop would be my next stop. Others here would have that thing tore apart before the sun set, but I don't have the tools or knowledge to tackle that. Good luck and keep us posted. I know a good mech here local. PM me if you need his number.
Post Fiend
Joined: Jul 2005
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From: 21791
Next looks like a compression check. Locate someone with a PSD specific dummy glow plug, that you can attach a compression gauge (up to 500psi) and crank without starting the engine, and see what cylinder has the problems. Good luck.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Originally Posted by strokin_it7.3
Next looks like a compression check. Locate someone with a PSD specific dummy glow plug, that you can attach a compression gauge (up to 500psi) and crank without starting the engine, and see what cylinder has the problems. Good luck.
The immediate rise of the coolant level is a dead give away.
Also you might see some black particles or an oil slick looking substance on top of the coolant or stuck to the inside of the degas bottle at the waterline.
Seen too many bad head gaskets in my time to not be certain on this one.
100% positive because the coolant level overpressures and the engine is still cold.
400 psi compression is very hard to contain without good gaskets. It will keep the coolant in the water jacket when the engine is off, but will not keep some of the compression from coming out when you start it.
Gone, but not forgotten
Joined: Oct 2005
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From: Charlotte-Fairbanks-Bflo
Originally Posted by strokin_it7.3
Next looks like a compression check. Locate someone with a PSD specific dummy glow plug, that you can attach a compression gauge (up to 500psi) and crank without starting the engine, and see what cylinder has the problems. Good luck.
Last edited by Markadeck; Dec 27, 2007 at 07:06 PM.
Post Fiend
Joined: Jul 2005
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From: 21791
Well, if i were to do it, remove GP and install the gauge, unhook the UVC connectors going to both gaskets, youre in that far it's a cinch to do. The truck won't start, one guy bumps the starter and the other guy watches the gauge to bounce.
EDIT- this isn't so much as to find the cylinder that's bad, but moreso which head has to come off. Anyone else know a better way?
EDIT- this isn't so much as to find the cylinder that's bad, but moreso which head has to come off. Anyone else know a better way?
Last edited by PowerstrokeJunkie; Dec 27, 2007 at 07:25 PM.
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Turns out that a man I work with, His son is the head diesel mechanic at Hawthorne Ford in Belmont and as soon as I told him what was going on, him and the other mechanic instantly said injector cups and that it was very expensive to fix. Before I left he said if I pulled the motor he would come over and replace them for me at a price.After I left a friend called and told me he found out that his dad worked with me and said he would take it to his house and replace the injectors and head gaskets and glow plugs since he would have the heads off anyway and not pull the motor but raise the cab for added room for $1600.00.He said he could have done in about a week in his spare time.
Does that sound like a plan or what?
Does that sound like a plan or what?
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
To me, yes, it does sound good. Not sure about the raising the cab thing though. But what do I know.
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Post Fiend
Joined: Jul 2005
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From: 21791
If youre not going to pull the engine, it's a whole lot easier to remove the cab to remove a head. It's how most of the 6.0's are done. thats a salty price. At $60, that's 27 hours R&R. At $40, that's 40 hours. Either way thats alot of time to be spending for just a headgasket. but he's local and he'll do it quick, so that's what you pay for. Does that include parts?
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Me neither but I think it will allow all the room needed to take the heads off. They are slid up under the dash pretty far.For me I'm a very good mechanic when it comes to gas but never fooled with a deisel.From what I've heard you only get one chance and when you replace the head gaskets you do not use the same bolts, you buy new ones.
If this was a car or truck that runs off gas I would have already tore it apart. I like to Do all my own work so I will know its done right.The PSD scares me.To much from what I've heard to screw up.BTW the mechanics said they doubt its a head gasket,dont see hardly any 7.3L with a blowed head gasket.6.0's yes.
If this was a car or truck that runs off gas I would have already tore it apart. I like to Do all my own work so I will know its done right.The PSD scares me.To much from what I've heard to screw up.BTW the mechanics said they doubt its a head gasket,dont see hardly any 7.3L with a blowed head gasket.6.0's yes.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Originally Posted by jamesdellinger
Me neither but I think it will allow all the room needed to take the heads off. They are slid up under the dash pretty far.For me I'm a very good mechanic when it comes to gas but never fooled with a deisel.From what I've heard you only get one chance and when you replace the head gaskets you do not use the same bolts, you buy new ones.
If this was a car or truck that runs off gas I would have already tore it apart. I like to Do all my own work so I will know its done right.The PSD scares me.To much from what I've heard to screw up.BTW the mechanics said they doubt its a head gasket,dont see hardly any 7.3L with a blowed head gasket.6.0's yes.
If this was a car or truck that runs off gas I would have already tore it apart. I like to Do all my own work so I will know its done right.The PSD scares me.To much from what I've heard to screw up.BTW the mechanics said they doubt its a head gasket,dont see hardly any 7.3L with a blowed head gasket.6.0's yes.
There are no other differences in the way that the two types of engine operate.
There are pistons, pushrods, intake, exhaust valves, everything is the same.
If you can tear down a gas engine, go for it.
There is nothing different about working on a diesel engine. It's just a lot more heavy duty inside.
Follow the specs and you'll do fine.
You do have a book, don't you?
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If its really that simple I would not be afraid to tear it all to pieces and no I do not have a book yet, wish I did ! I've been a machinist for 30 years and if I break it I can fix it.All kind of knowledge upstairs just none in the field of diesel engines.