Was looking for a shop in or near Milwaukee to work on M1008; then did it all myself!

[retro_life]

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CHEAP easy way to look for exhaust leaks... Low Effort Required - Much easier than all the other stuff you have done!

Get yourself a spray bottle. Ladies hairspray, 409, Whatever.
Get the water good and hot and fill the bottle 3/4 or so full.
Get some good soap. Dawn or something like it.
Give the bottle a good healthy squirt. Don't shake it up, just swirl it around in the bottle.

Then, with your bottle of soapy water in hand, open the hood, and go crank up the truck.
Immediately walk around to that side where you think the ticking is coming from.
Spray it. Don't be bashful, give it a nice coat of water and soap.

It you get bubbles, you have the leak we have been talking about. If not, well it was a cheap way to hunt for it. WHATEVER you do, don't let the motor get scalding hot. It will just dry out the water and you loose the effectiveness.


MOST IMPORTANT: If you snatch your lady friend's hairspray bottle and dump it out for this project - Your death isn't my responsibility. You have been warned!

I don’t really think it’s the exhaust but I’m going to check it closely before moving forward on the valve train.
I think the noise I’m hearing on the right side pipe is just the valve noise being amplified down the line. On the header/manifold area I hear just a light whistling clicking sound like I do when I listen directly on the injectors, then after the 3 bolt flange I can hear the knock for about 2 feet on the pipe before it’s not really perceivable anymore. I’m down there touching the stethoscope to everything and it’s driving me crazy lol.
By far the loudest places I hear the knocking sound with the stethoscope is on the fuel lines right where they bolt to the brackets on top of the valve covers. I’ve cracked them and all that changes is the motor bogs down but the knocking is still there in the background until it comes back full force once injector is tightened again.

Streamable Video

Watch this video on Streamable.

streamable.com

 

[retro_life]

Should I get one of these @ezgn ? Or should I get some kit I’ll be able to use with other cars in the future? Not sure. Lemme know what you recommend.

 

[retro_life]

Should I grab one of these too

 

[ezgn]

Should I get one of these @ezgn ? Or should I get some kit I’ll be able to use with other cars in the future? Not sure. Lemme know what you recommend.
View attachment 842802

I am not aware of compression testers that are for diesel and other cars. I'm not quite sure of your question. The diesel tester can be used for any diesel engine the only difference would be the adapter that threads into the glow plug thread. The tester can thread any size adapter needed for different size glow plug holes. This kit you are looking at will have the right size adapter for a G.M. 6.2 diesel engine. Diesel engines have higher compression ratings than gas motors which is reflected in the higher gauge ratings for the diesel compression gauges. This gauge your showing looks to me to be a good choice for your truck, and a good buy with the adapter included.

 

[retro_life]

I am not aware of compression testers that are for diesel and other cars. I'm not quite sure of your question. The diesel tester can be used for any diesel engine the only difference would be the adapter that threads into the glow plug thread. The tester can thread any size adapter needed for different size glow plug holes. This kit you are looking at will have the right size adapter for a G.M. 6.2 diesel engine. Diesel engines have higher compression ratings than gas motors which is reflected in the higher gauge ratings for the diesel compression gauges. This gauge your showing looks to me to be a good choice for your truck, and a good buy with the adapter included.

Yeah that’s the Kent Moore tool. It’s probably the official one that’s used in the TMs. I was asking if you think I should get that or get a kit that has a bunch of different glow plug/injector fittings to be used on other vehicles. But I’m probably only gonna be working on 6.2s anyway so I’ll probably just go with the Kent Moore.

 

[ezgn]

Should I grab one of these too View attachment 842803

No! Not needed. In my opinion you can time your engine with the injection pump,put the marks together, test drive, re adjust if necessary.

 

[ezgn]

Yeah that’s the Kent Moore tool. It’s probably the official one that’s used in the TMs. I was asking if you think I should get that or get a kit that has a bunch of different glow plug/injector fittings to be used on other vehicles. But I’m probably only gonna be working on 6.2s anyway so I’ll probably just go with the Kent Moore.

Why buy adapters you may never use. the adapters are cheap and you can buy them as needed.

 

[retro_life]

Why buy adapters you may never use. the adapters are cheap and you can buy them as needed.

Which was the $75 one you were talking about?

 

[Mullaney]

Which was the $75 one you were talking about?

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Try the cheap fix first.
Soap and Water is cheap.

 

[cucvrus]

Have you ever pressure tested the cooling system? Is it possible that a slight head gasket leak is making a noise. I mean I had them that the head gasket had a weak spot at the compression ring. My issue with diagnosis on this truck is that so many things were done to it and so many things changed. Running it hard for several thousand miles after being in limbo for so long can open up and move things that have been resting and rusting a long time. Just a thought. Check and see if the cooling system holds compression and pressure. There should not be a leak down.
This is an example of a corroded compression ring at the cylinder. Engine ran OK but steams and smoked on cool damp mornings.

CUCV head gasket / head/ or change engine survey

I was digging around in my parts cabinet today and came across some paperwork that came with my 1984 M1009/The Mule when I bought it. It is the U.S. Army Equipment Record Folder. And in the folder is the original DD form issue release/receipt document for the M1009 Mule. It shows the...

www.steelsoldiers.com

I mean at this point anything could be worn and making noise. I would rule out air and injection pump timing. I do not think it is fuel related. Compression test is fine after the cooling system is checked and verified. Good Luck. Thank you for the report. trying to help from afar. You have been a great student and learned fast and well. Remain Calm.

 

[Hicks]

from your video I think @ezgn is right, I think there is a rocker arm loose and a compression test would tell some information

 

[ezgn]

Which was the $75 one you were talking about?

That was just a range I felt you could buy a decent tester for , no particular tester in mind. Off to work!

 

[cucvrus]

from your video I think @ezgn is right, I think there is a rocker arm loose and a compression test would tell some information

Anything like that. Cam lobe? I mean shot gun blast everything that moves. It has to hit and ring out somewhere.

 

[Rutjes]

from your video I think @ezgn is right, I think there is a rocker arm loose and a compression test would tell some information

If it is a loose rocker arm, have a look at these 2 topics. IMO better then replacing the nylon retainers.

6.2 Valve Rocker Retainers

Well I broke a valve spring and was a pretty close to dropping a valve from the looks of it. Luckily I shut it down before things went too off the rails. Long story short, when I pulled the rockers to repair the spring I also had a cracked rocker shaft and the old style bushing/cast rockers...

www.steelsoldiers.com

DIY SS Riveted Rocker Retainers (With Pics and PN's)

The stock 6.5 rocker is held in place by a nylon button. I had one break on me, now I'm replacing the piston rings in cylinder 6 because of it. No way I'm putting nylon in again. I could have gone with expensive HS roller rockers, or the bolt method, but I thought I'd try something similar to...

www.thetruckstop.us

I'm thinking of going with the stainless rivets.

 

[frank8003]

"Was looking for a shop in or near Milwaukee to work on M1008; then did it all myself!"

So what do you think You saved so far?
The money, not the truck you saved.
Has it been fun getting daily challenges squared away?

 

[Mullaney]

So if a PRESSURE TEST is in your future, go to one of the local parts houses and rent a tester from them.

Cheap like spraying soapy water on the exhaust. Not being pushy - but have you looked into that idea?
We can dream up expensive things to do... Just hoping to save you a dollar where it can be saved.

 

[retro_life]

"Was looking for a shop in or near Milwaukee to work on M1008; then did it all myself!"

So what do you think You saved so far?
The money, not the truck you saved.
Has it been fun getting daily challenges squared away?

It’s been fun and educational. I’m a better man for this experience that’s for sure. Now I just gotta figure out the tapping problem.
As far as money saved. Here is a excerpt from an email I received from a certain company everyone on here probably knows. Very famous for working on cucvs and selling parts. I looked into taking it over to them in the beginning but it was so outrageous that I just manned up and did it myself.

“Injector Pump and injector installation and timing. Includes pulse timing of new pump. Customer to supply parts. $1800

Install flex plate (remove transmission, inspection of all mounts) $775
New flex plate $95”

These were also said to be “discounted” rates since I was interested in doing a bunch of stuff at once… So with just that money in labor alone paid for probably everything I did on the truck minus the GVOD. Plus I got to learn and make some really great friends on here.

 

[retro_life]

So if a PRESSURE TEST is in your future, go to one of the local parts houses and rent a tester from them.

Cheap like spraying soapy water on the exhaust. Not being pushy - but have you looked into that idea?
We can dream up expensive things to do... Just hoping to save you a dollar where it can be saved.

Yeah I will look into that. I haven’t bought anything yet as I’m still recovering from all the money I already spent lol. I’m also kinda taking a short break before jumping back in. I’m just happy to finally be home after 2 months and I’m spending time with family and my dog and getting back into my routines again.

 

[Mullaney]

Yeah I will look into that. I haven’t bought anything yet as I’m still recovering from all the money I already spent lol. I’m also kinda taking a short break before jumping back in. I’m just happy to finally be home after 2 months and I’m spending time with family and my dog and getting back into my routines again.

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Good Deal!

Glad everyone was happy to see you when you got home.

 

[retro_life]

Just found this video on YouTube. Things sounds mean with no mufflers

Here's another video of a guy who had the same exact sound I'm having

In the comments he said it ate a glow plug or a bolt and rebuilt the motor.
" Its been fixed, had piston slap on the number 5 cylinder, looks like it ate part of a glow plug or bolt. Fixed now, me and a buddy rebuilt it. Check out my other videos. "