Head gasket gone wrong - Ford Powerstroke Diesel Forum
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post #1 of 29 Old 07-30-2013, 06:30 PM Thread Starter
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Head gasket gone wrong

So I did the head gaskets on my truck and I thought did everything just how it was suppose to be done. Start the truck no leaks but it is making this horrible pop sound. Like a vavle is stuck open. Any ideas what I did wrong??


Pop sound after head gasket instal - YouTube

Let me know if the link doesn't work. Thanks in advance!!

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post #2 of 29 Old 07-30-2013, 07:03 PM
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Probably a bad lifter? Sounds pretty odd.
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post #3 of 29 Old 07-30-2013, 07:35 PM Thread Starter
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I don't even know. The only thing I can think off is a lifter is sticking but I had the heads fully rebuilt.

I know I tourqed the bolts holding down the rocker guides to 30ftlbs. Maybe that is too tight? I didn't see how you could adjust thm like on a normal gas engine so I figured that would be fine. No matter what it is I'm going to have to tear all that **** apart again

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post #4 of 29 Old 07-30-2013, 07:48 PM
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Well, you could do a compression test before taking everything off, if a valve is open, you will have less compression, same with arm, lifter etc.
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post #5 of 29 Old 07-30-2013, 09:17 PM Thread Starter
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Okay...

So based on that I had to look up how to do that to begin with. The more I think about I truly do not remember torquing the glow pugs down. Couldn't that cause the same sound? My theory is like when you take out a spark plug on a gas engine it makes about the same sound. Plus I would think that would also make it harder to strart as well because the compression can't build up like it is suppose too.

2005 Lariat
EGR no, no..
AEM CAI
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Tunes by IDP
MBRP 4"
Blue spring
Warren Diesel 175/stock


Last edited by stysinjimmmy; 07-30-2013 at 09:22 PM.
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post #6 of 29 Old 07-31-2013, 04:12 AM
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Exactly, thats why i was saying about a compression test. Check the glow plugs, take off the valve cover and the HPO rail above the injectors

Also you can have a loose rocker arm, most of the times that i do a head gasket, a tocker brnds or breaks, leaving the valve closed or open. Also the little plastic things that make sure the arma stay in their place tend to break, they are made from plastic and hot oil its not their best friend
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post #7 of 29 Old 07-31-2013, 05:13 AM
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Sounds like you bent a push rod. Do a cylinder contribution test and you should be able to find the cylinder with the problem and start there.
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post #8 of 29 Old 07-31-2013, 06:33 AM Thread Starter
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I hope I didn't bend a push rod. Whatever I did I am going to have to wait until tomorrow to look at it. We just closed on our house yesterday and I gotta keep mama happy before I work on my truck again.

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post #9 of 29 Old 07-31-2013, 07:59 AM
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Is the noise your hearing coming from the air filter? If so you have exhaust valves not opening. I had a new tech at my shop not get a couple push rods seated properly in the lifter and it bent two exhaust push rods on one engine. Made a horrible popping in the intake because of the cylinder pressure escaping into the intake when the intake valves open.
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post #10 of 29 Old 07-31-2013, 08:10 AM Thread Starter
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Yes that is exactly where I am hearing it. It just sucks that I have to take so much apart to look at it

2005 Lariat
EGR no, no..
AEM CAI
ARP
Tunes by IDP
MBRP 4"
Blue spring
Warren Diesel 175/stock

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