Bang!! Pop-Pop-Pop-Pop....

[ivbeenrokd]

So we were driving to the Dandridge parade this morning on the interstate running around 2400-2500 RPM and all the sudden Bang!! Pop-Pop-Pop-Pop and some smoke came into the cab. I pulled over and the truck still seemed to be running okay but I couldn't locate the sound. We were only about a mile from the exit ramp so I drove it nice and easy and stopped at a gas station. I raised the hood and started it back up. Found there was compression blowing out where the blow-by tube connects to the valve covers and that's where the sound was coming from. Also some oil coming out at the same spot. Called the wrecker and took it home, no parade. I guess I'll be tearing the valve covers out next to look....

 

[Coffey1]

Hope it's not too serious.
Keep your fingers crossed.
Just curious how much was the tow.

 

[ivbeenrokd]

The tow was excellent I thought. Called several places that were busy. First place I called that could do it said $400 or more. Second place I called that said they could do it said around $125 and I said come get it! I paid them $140 and still felt like it was a great deal. They were there quickly and took great care to make sure it was delivered in good shape.

 

[Coffey1]

I agree 140 not bad.
Just hope I never have to have my 5 ton put on the hook.

 

[ivbeenrokd]

Yes, a 5 ton would surely be worse. Mine only weighs 13,100 lbs now.

 

[sigo]

Make sure you post the outcome when you get it diagnosed or fixed. Hope it's not serious.

 

[73m819]

I agree 140 not bad.
Just hope I never have to have my 5 ton put on the hook.

Try 2 5t wreckers on the same hook.

 

[tennmogger]

Sorry to hear about the truck problem. Too bad you missed the parade!

Bob

 

[Jeepsinker]

Sounds like you blew a headgasket.

 

[ivbeenrokd]

https://vimeo.com/150683048

Jeepsinker, you are becoming my hero! LOL. It is a blown head gasket right where the two heads meet. I can't tell which one because I haven't taken the heads off yet but that's why it was making a popping sound since it was right in between the heads. Too much pressure for such a small space for that air to get out. Now the fun will begin.

 

[cattlerepairman]

Great video clip! Thanks for posting.

 

[dmetalmiki]

Sorry you missed the parade, and hope the repair goes to plan for you. Post up the rectification with some pictures as you procceed.

 

[Flyingvan911]

Glad it is something relatively easy to fix. It could have been worse.

 

[ivbeenrokd]

Well, we're finally pulling everything apart now. I'm removing the injectors and the 4th one back is stuck, all others are out. On the other 5 I just pulled the 2 retaining bolts, put a wrench on the injector to break it loose, then they slid right out. This one will only spin with significant force, doesn't seem to loosen at all, and won't pull out at all.

Any thoughts?

Thanks,
John

 

[cattlerepairman]

sliding hammer? If you don't have one, many autoparts places have them as rental tool.

 

[Jeepsinker]

No, that can break the injector tip off in the head. Spray some good penetrating oil ( Kroil) down into the injector bore and keep working it with a wrench while prying up gently with a pry bar. It may take a while, and will take a lot of penetrating oil, but be patient and it'll come out as the oil softens the carbon fouling on the injector tip and / or body. If there is fouling on the body, that means that the hold down bolts weren't tight enough, or the copper sealing washer failed.

 

[74M35A2]

Any reason one can't loosen the injector hold downs a few threads, and then fire up the engine? I can't think of why that would not loosen a stuck injector. This is common on the 8.3's in 5T's, and I have been contemplating doing it this way rather than fabbing up an injector pulling device. I guess it would be like taking all the lug nuts loose and driving around to break a rim off a hub, but I have done that too!

 

[Jeepsinker]

You could do that, but I wouldn't want to put everything back together just to fire it up and Break one injector loose.

 

[gimpyrobb]

Mine were held in pretty good with soot.

I say pull the head with that one still in and you can clean the soot off from the bottom.

 

[rustystud]

Any reason one can't loosen the injector hold downs a few threads, and then fire up the engine? I can't think of why that would not loosen a stuck injector. This is common on the 8.3's in 5T's, and I have been contemplating doing it this way rather than fabbing up an injector pulling device. I guess it would be like taking all the lug nuts loose and driving around to break a rim off a hub, but I have done that too!

That is a common trick in the heavy equipment world. Loosen the injectors and then start the engine. Usually they all come busting out of there bores and spraying all over the place. Of course you must shut the engine down quickly ! Sometimes the hold-down bolts will break though so be careful if you do try this trick.