Diesels function via compression and high fuel injection pressure; glow plugs are only needed in cold weather. Check fuel delivery; lift pump, high pressure pump (usually driven off the engine), and the injectors themselves (could either be fully mechanical or solenoid based)
Hey, Zack! I enjoy all your videos! 40+ years of diesel truck fleet maintenance taught me: 1. Check fuel pressure. 2. Check fuel filter(s) 3. Check fuel shut off solenoid. 4. Check for air restriction. A diesel only needs fuel and air to run. 5. Do an electrical check on the glow plugs, make sure they are to manufacturer specs. If you have fuel, air and the glow plugs are working, it will start and run. Good luck!
@ZacksJerryRig The Phone recordings brings me back to 1995, i don't know if you wanted that but it worked haha. FYI: The DSLR and mic combo are so nice to listen and look at.
There are easy ways to check for working glow plugs. And glow plugs, as a lot of people have pointed out, are useful below freezing (that light is mainly there to prevent you from activating the starter while the glow plugs are pulling current from the battery on "dumb" systems). In my days as a mechanic, I've seen diesel trucks refuse to start for as simple a reason as bad air filters. So, my point is a good troubleshooting methodology is in order here, but I guess it wouldn't make for interesting content.
Reading lots of comments about fuel. I agree you've got some kind of fuel delivery problem. Could be wiring, injectors or pump related. Just hope the fuel delivery system isn't all hogged up!!! Good luck.
Having worked on many diesels I would most likely say it is the fuel pump, especially if it has a mechanical pump. I would check the fuel cut off solenoid first and then individually check all the injector pump outputs to see if it needs a rebuild
@@ZacksJerryRig that would be a really interesting collab. You are all serious and chill, he is shouting and hyper 🤣🤣 you can even get whatsinside involved, see if they can find a way to remove the helmet
I highly advise to check the fuel. Pump first before doing all the other work, usually when the engine cranks but dosent start is its not getting enough fuel or its weak and not building up Pressure
We were instructed to silicone the starter wires to protect them from corrosion as well as hasty privates that like to arc out wrenches on bare terminals. lol The PCM is a black box under the dash on the driver side. The cannon plug is right in front of the drivers window under the hood. That box controls pretty much everything on that vehicle. If you haven't already tested to see that the glow plugs are actually cycling do that. If you have it may be the PCM. The good news is that you look like you have either the 6.2 or the 6.5 detuned so you may be able to run that thing with about 4 wires since it has mechanical fuel injection.
Glow plugs will just help it start in the cold you don't really need them in summer. Spray some starting fluid down the intake to see if it will fire up could just be a fuel problem.
You can download all of the maintenance manuals (TM's) for free. It will save you a ton of time on troubleshooting. There are alot of small things and model variations on these trucks that were added do to military requirements that don't really make sense to the average civilian mechanic. (And sometimes the military mechanic either!) Get all of the operator -10, Maintenance -20/30 etc... and the parts manuals and read them. Make sure you are using the correct TM based on your model. The TM's will be a good foundation to maintain your truck even if you think you can do something a different way or easier. I was a mechanic in the Army for 26 years from 1992 to 2018 and worked on a bunch of different variants of the HMMWV. The worst thing you can do to one is not drive it! Give her some love and drive the hell out of it. She won't let you down.
Crack the injector lines at the injectors and watch for fuel on ALL while turning the engine over, Also get a fuel pressure tester. Two easy spots to start for fuel stuff. Also for the glow plugs, pull one or two out and hold them with pliers (make sure you have a ground) while turning the engine to on to see if they get real hot or don't work.
The silicon on the starter positive and negative is suppose to be there. That's so if you drive in the water it doesn't cause a short. (I use to work at AM General)
Lots of people already said the same thing. Chasing glow plugs for this is not the answer. Check compression on your engine. Not well up on larger engines but smaller ones suffer from block cracks. Use some easy start see if it starts.. if it does not then you know you have a compression leak. If it does turn over and die it's probably fuel delivery issue like a bad fuel filter, pump or gummed up rails.
He Jerry I have a humvee and where did you put your licence plate and how I've been driving it without one for awhile and finally got caught and have to find out how
I’m literally here watching SCREAMING it’s fuel or compression not the glow plugs. A diesel will fire at nominal ambient temperatures with sufficient compression and fuel. The hummers are a really simple design intentionally. All you are doing is firing the proverbial parts cannon.
Exactly, totaly not glow plugs. But grounding harness could be helpful, there is pump relay which may be not turning on because of bad ground, but probably not.
@@Kevin12484 And yet he seems to be chasing down an otherwise irrelevant line of diagnosis to the core complaint. Engine will not start. I’m glad he found the glow plugs being bad, but, they are not relevant to the starting issue during summer. I used to work on these in the late 90’s.
Hopefully you see this but maybe my credibility helps, I'm currently in the military and have worked with Humvees most my military career. There's a couple tricks to starting these old machines, so the first trick you wanna try is while holding the starting switch in the start position and give it some gas (hit the acceleration). Another trick you can do is the same as the last one but have someone hold a piece of cardboard over the exhaust until it hopefully starts. This last trick is a bit hard to explain so I hope you understand what I'm saying, move the starting switch towards the start position slowly, when the vehicle begins to run give it as much as gas possible. I hope this helps and if you have any questions about my tricks just reply to my comment.
Yup, the comments about the fuel system is what I would chasing. I have a 6.5l turbo the tank was bad which ruined the lift pump and clogged up the fuel filter manager. Try to check out fuel systems
If Zip Ties and Bias Ply's has taught me anything about diesels that wont start, all you need to do is keep cranking it with your foot to the floor while spraying as much ether/starting fluid/brake clean/carb cleaner/gun cleaner or any other highly combustible aerosol directly into the intake.
Seems like Jerry doesnt want to read the comments from the last video, unless he made this video soon after the first. Glow plugs aid in cold weather, also it sounds like the injectors get no fuel whatsoever, could be a dead fuel pump or clogged lines.
Hi nice viedeo, its clerly a fuel problem not the glow plugs if they dont work the engine shuld theroticly still start above 20°C. If it were the glow plugs you shuld se a white smok koming out fo the exaust from the unburnd vaporized ful... id chek the flow of the pums the filter and as a last messure the injetors, but you ned to be caful with those cause vaporised disel is rater toxic and at the high injetion pressure i can easily injeckt it under your skin... i wish you best of luck with your projekt. Gretings from Germany
You can also check your glowplug voltage with a multimeter whyle staring i there is no volage it mey be a burned out limiting resistor witch is conected in series with the glowplugs.
The axilary ground shuld not be nessesary since the startermoror(which is the biggest load in the system there for most susceptible to a ground problem) ran realy nice and powerfull in the last video
I’ll install solar panels on my roof and water my garden using the rain… but also I’ll run this 25 year old humvee that chugs about a gazillion gallons per 60 miles 😂
Diesels function via compression and high fuel injection pressure; glow plugs are only needed in cold weather. Check fuel delivery; lift pump, high pressure pump (usually driven off the engine), and the injectors themselves (could either be fully mechanical or solenoid based)
This was the consensus of comments from the prior posting about glow plugs.
Don't see how supplemental grounding will change the fuel issue.
Just replace it with a v12
Hey, Zack! I enjoy all your videos! 40+ years of diesel truck fleet maintenance taught me:
1. Check fuel pressure.
2. Check fuel filter(s)
3. Check fuel shut off solenoid.
4. Check for air restriction. A diesel only needs fuel and air to run.
5. Do an electrical check on the glow plugs, make sure they are to manufacturer specs.
If you have fuel, air and the glow plugs are working, it will start and run.
Good luck!
@ZacksJerryRig
The Phone recordings brings me back to 1995, i don't know if you wanted that but it worked haha.
FYI: The DSLR and mic combo are so nice to listen and look at.
I love humvee videos.
same here!
I love too 💖
Same!
You probably like everything that your buddy Z, is rolling out into the www
✌️
Yeah same you learn a lot! Also love your videos!
There are easy ways to check for working glow plugs. And glow plugs, as a lot of people have pointed out, are useful below freezing (that light is mainly there to prevent you from activating the starter while the glow plugs are pulling current from the battery on "dumb" systems). In my days as a mechanic, I've seen diesel trucks refuse to start for as simple a reason as bad air filters. So, my point is a good troubleshooting methodology is in order here, but I guess it wouldn't make for interesting content.
Reading lots of comments about fuel. I agree you've got some kind of fuel delivery problem. Could be wiring, injectors or pump related. Just hope the fuel delivery system isn't all hogged up!!! Good luck.
Having worked on many diesels I would most likely say it is the fuel pump, especially if it has a mechanical pump. I would check the fuel cut off solenoid first and then individually check all the injector pump outputs to see if it needs a rebuild
I hope this turns into a series ... Because I am very much interested.
Thank you, man. I have so much love and respect for you.
ChrisFix owns a HumVee, he'd probably know what to do.
His is swapped, I agree that he might guess what the problem is but the two Hummers are completely different in terms of powertrain.
ChrisFix would definitly know.
I'm quessing like you that there still are some fuel problems.
@@ZacksJerryRig that would be a really interesting collab. You are all serious and chill, he is shouting and hyper 🤣🤣 you can even get whatsinside involved, see if they can find a way to remove the helmet
I agree call him
I highly advise to check the fuel. Pump first before doing all the other work, usually when the engine cranks but dosent start is its not getting enough fuel or its weak and not building up Pressure
We were instructed to silicone the starter wires to protect them from corrosion as well as hasty privates that like to arc out wrenches on bare terminals. lol The PCM is a black box under the dash on the driver side. The cannon plug is right in front of the drivers window under the hood. That box controls pretty much everything on that vehicle. If you haven't already tested to see that the glow plugs are actually cycling do that. If you have it may be the PCM. The good news is that you look like you have either the 6.2 or the 6.5 detuned so you may be able to run that thing with about 4 wires since it has mechanical fuel injection.
We audience would definitely like to see You and Chris fix Collab ..... That video's gonna skyrocket 🚀🚀
Love the continuation of this.
Would love to see more about the HMMWV!!!
Glow plugs will just help it start in the cold you don't really need them in summer. Spray some starting fluid down the intake to see if it will fire up could just be a fuel problem.
Fuel, air and compression makes it go boom boom! 💥
You can download all of the maintenance manuals (TM's) for free. It will save you a ton of time on troubleshooting. There are alot of small things and model variations on these trucks that were added do to military requirements that don't really make sense to the average civilian mechanic. (And sometimes the military mechanic either!) Get all of the operator -10, Maintenance -20/30 etc... and the parts manuals and read them. Make sure you are using the correct TM based on your model. The TM's will be a good foundation to maintain your truck even if you think you can do something a different way or easier. I was a mechanic in the Army for 26 years from 1992 to 2018 and worked on a bunch of different variants of the HMMWV. The worst thing you can do to one is not drive it! Give her some love and drive the hell out of it. She won't let you down.
Excellent job looking forward to see the good results 👍
More car DIY stuff please these are awesome
It's always a good day when zack uploads a video
I think this channel deserves it's own intro
This brings back memories of Matt (off the ranch) doing all this to his humvee
Was waiting for this video
Amazing project! I'm learning so much.
Can't wait for that old boy to start working !
I don't know anything about diesel engines, but learning with your videos 👍🏼👍🏼👍🏼👍🏼🇦🇺🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘
Crack the injector lines at the injectors and watch for fuel on ALL while turning the engine over, Also get a fuel pressure tester. Two easy spots to start for fuel stuff. Also for the glow plugs, pull one or two out and hold them with pliers (make sure you have a ground) while turning the engine to on to see if they get real hot or don't work.
I knew this channel would have more video's.
But they are little short, projects needs 30 minute videos!
The silicon on the starter positive and negative is suppose to be there. That's so if you drive in the water it doesn't cause a short. (I use to work at AM General)
This is so fun. Do more!
The glow plugs are for extreme cold weather starting. They are not your problem right now.
Depends on whether there is direct injection or a precombustion/turbulence chamber. Chambers need glow plugs all the time except when engine is hot.
Lots of people already said the same thing. Chasing glow plugs for this is not the answer. Check compression on your engine. Not well up on larger engines but smaller ones suffer from block cracks. Use some easy start see if it starts.. if it does not then you know you have a compression leak. If it does turn over and die it's probably fuel delivery issue like a bad fuel filter, pump or gummed up rails.
good old number C, takes me back to home alone
You can try to start the engine on ether to see if it will go even if you think you have bad glow plugs it should still start with ether
These cars are very powerful. I am your big fan
Man I’d love a @ChrisFix/JerryRig collab
He Jerry I have a humvee and where did you put your licence plate and how I've been driving it without one for awhile and finally got caught and have to find out how
Interesting watching these. I'm looking to get one and it's Informative watching these
As an old 63Y and 63B, I dealt with thos problems a lot more that you would imagine.
You need to check cylinder compression and fuel delivery.
I’m literally here watching SCREAMING it’s fuel or compression not the glow plugs. A diesel will fire at nominal ambient temperatures with sufficient compression and fuel. The hummers are a really simple design intentionally. All you are doing is firing the proverbial parts cannon.
Exactly, totaly not glow plugs. But grounding harness could be helpful, there is pump relay which may be not turning on because of bad ground, but probably not.
He's milking content, just watch and enjoy.
@@rb30e yup true
If you watch the other video he did he realized it's probably a fuel issue.
@@Kevin12484 And yet he seems to be chasing down an otherwise irrelevant line of diagnosis to the core complaint. Engine will not start.
I’m glad he found the glow plugs being bad, but, they are not relevant to the starting issue during summer. I used to work on these in the late 90’s.
More videos like this one (non-phone stuff) please!
Waited for this ❤️
I have heard that when the engine cranks for a long time but doesn't start it mostly is related to the fuel injection system.
More such videos please!! Great content!
Spray starting fluid/ether in the intake and that should start it and confirm that the glowplugs are bad
Hopefully you see this but maybe my credibility helps, I'm currently in the military and have worked with Humvees most my military career. There's a couple tricks to starting these old machines, so the first trick you wanna try is while holding the starting switch in the start position and give it some gas (hit the acceleration). Another trick you can do is the same as the last one but have someone hold a piece of cardboard over the exhaust until it hopefully starts. This last trick is a bit hard to explain so I hope you understand what I'm saying, move the starting switch towards the start position slowly, when the vehicle begins to run give it as much as gas possible. I hope this helps and if you have any questions about my tricks just reply to my comment.
Yup, the comments about the fuel system is what I would chasing. I have a 6.5l turbo the tank was bad which ruined the lift pump and clogged up the fuel filter manager. Try to check out fuel systems
That thing is looking so stripped... really curious as to what your plans are...
;-)
Thanks for sharing nice video
Thank you for watching.
@@ZacksJerryRig you're welcome hope you and your family have a blessed one
Hi from Sofia Bulgaria ! Super Humvee projekt !
There must be a veteran in the SLC area that worked on humvees during their deployment...
I always skip 10secs on Jerry's videos, can u tell me which part is it?
Cleetus McFarland can not only assist he can also turn your Humvee into a submarine.
What side is the steering wheel on. Oh you must have flipped the bit at the start.
I was confused
Can you make a video on how to keep track of screws and parts of a phone when fixing DIY
Either screw em back to were they came from or poke em through a piece of card in the same shape as they came out.
@@odie7764 I want Zack to show how he does it (or better yet, how he did it when he first started)
If Zip Ties and Bias Ply's has taught me anything about diesels that wont start, all you need to do is keep cranking it with your foot to the floor while spraying as much ether/starting fluid/brake clean/carb cleaner/gun cleaner or any other highly combustible aerosol directly into the intake.
Its my first time watching you doing car stuffs like that..
You and @Chrisfix collab would be epic, though i think he is quite busy right now with his other projects.
You should get it Chrisfixed humvee
in the previous episode the steering wheel was on the opposite side... What happend?
mirror image camera setting
How about turning this HMMWV to an electric one ? And for placing battery you can probably use the rear space ! Just a random thought 😅
Great video. Keep up the good work 🙂
You should of bought a 2001 jeep Wrangler great year and great off road
I like this kind of videos, try to use a stand for the camera and both hands.
First video with less good camera quality i always put on one off your video’s on like a new tv or phone to test the quality 😂
Seems like Jerry doesnt want to read the comments from the last video, unless he made this video soon after the first. Glow plugs aid in cold weather, also it sounds like the injectors get no fuel whatsoever, could be a dead fuel pump or clogged lines.
Ah, the uber rare right hand drive model of the HMMWV
This may sound very basic, but have you checked the fuel?
This is cool. More videos like this.
So there will be a couple of videos until this starts right?
Awesome videos sorry I’m sooo late
I know the market is bad right now, but you should build a pc, at least at some point. It would make a great and super entertaining video!
Hmmvv is back
Not an expert here... but I agree with most other comments on the fuel. Maybe try bleeding the system and check the fuel pump?
Hi nice viedeo, its clerly a fuel problem not the glow plugs if they dont work the engine shuld theroticly still start above 20°C. If it were the glow plugs you shuld se a white smok koming out fo the exaust from the unburnd vaporized ful... id chek the flow of the pums the filter and as a last messure the injetors, but you ned to be caful with those cause vaporised disel is rater toxic and at the high injetion pressure i can easily injeckt it under your skin... i wish you best of luck with your projekt. Gretings from Germany
You can also check your glowplug voltage with a multimeter whyle staring i there is no volage it mey be a burned out limiting resistor witch is conected in series with the glowplugs.
The axilary ground shuld not be nessesary since the startermoror(which is the biggest load in the system there for most susceptible to a ground problem) ran realy nice and powerfull in the last video
shoot if it's beyond covering the exhaust with the drip tray i wasn't allowed to touch it lol back in the day
If it doesn't start will it be subjected to the burn test?
Jerry please contact Chris Fix to figure out the camera angles.
Is it left hand drive or it's just the flipped image?
ChrisFix x JerryRig collab please!
Just put some Electric motors in it from EV West and be done with that thingy.
You should collab with ChrisFix
Humvee Dbrand teardown skin?
Why did you buy it?
Sounds like a fuel pump issue look ay the rod that’s in the block that runs the mechanical fuel pump
WE need chrisfix over here!
Which motor does your model have?
If its just cranking over an over kinda sounds like somthing to do with the fuel system
Why is the steering wheel on the right side?
Why is the driver position on the wrong side?
Zack please ask any questions you have to ChrisFix or DieselBros or Matt from Offtheranch/Demolition Ranch
I’ll install solar panels on my roof and water my garden using the rain… but also I’ll run this 25 year old humvee that chugs about a gazillion gallons per 60 miles 😂
Lol. Ok ok.... but wait. There's more.
Check the fuel, fuel Fuse and the cable of fuel pump
Please
I love how you do everything for your self you're just like me lol
ChrisFix vs. JerryRig Hummer?
use brake cleaner to clean up everything you use brush on.
those starter cables look crusty i’d start with what you see
check for air in the fuel lines!!!
Are you sure it's not a fuel pump problem
#Chrisfix collab
Great love husband and wife helping