As far as i know, glow plugs are used to help start diesel engines in cold weather, so in your case engine should fire just up even without glow plugs connected. It is propably related to fuel - so first need to check if engine is geting fuel at all. Will wait for next update on this beast.
Is there an engine temp sensor on the injectors? Maybe since it starts cold everything is operating fairly normally, but when warm/hot the fuel pump is somehow bugging out.
@@kevinprimus6366 Desiel engines get they're ignition from the heat of compression, so glow plugs really only help. They still need to be there in warmer weather to help start it sometimes but they really only come into play in colder whether
When I was in the Army and our HMMWV wouldn’t start we covered the exhaust with the manual/book and then cranked it until it started. It always worked.
How does that work though? I get the logic of trying to keep the pressure high in the cylinder, but if your exhaust system and cylinder are at higher than atmospheric levels, wouldn't that pressure just escape as soon as the intake port opens? Surely while starting the pressure in the intake manifold is around atmospheric levels?
Loosen the nut on the injectors slightly, when you're turning the engine over there should be diesel seeping out, if not it's most likely the distributor pump.
I hope you do more project/vlog/whatever type videos on this channel more. I love the phone/tech videos on the main but the more off the cuff content is even better imho.
Do I need to know how to change the glow plugs on a military HumVee? No. Did I still watch the video as soon as it posted, and give it a thumbs up? Yes, yes I did.
Spray a little bug spray in the air filter compartment and if it starts and run it’s compression and if it starts and cuts off it’s fuel , that’s a simple test
I was gonna say a diesel doesn't need glow plugs to run in warm weather so you've definitely got a fuel pressure issue is start from the tank and work your way forward check all filters make sure there's no clogged lines etc
I used to be a hummer technician…. It’s probably either the injection pump or an injector stuck open… remove the injector return lines and check for an injector returning excessive amounts of fuel
It's not like "not registering" on the multimeter. It is registering as 1. which is infinite resistance. Just like when in air it is showing 1. Means air as well has infinite resistance
Its either getting no fuel (probably the main cause) or there is no compression. Even in cold weather diesels dont NEED glow plugs to start just to aid them. if its got fuel but no compression then youll see white smoke (un burnt diesel) or its got no fuel, do a compression check to find out, or crack a fuel line to see for fuel, as long as its not common rail which i assume it is not
man i love this jerry dude he soo calm and he just tells u everything soo calm and slow like way better than my teachers use to tell me when i was in school he's amazing i want to learn from him and i want to be friends with him for free
Give it a shot of happy juice/ether and if she rumbles then it's most likely a fuel issue. If you just need to get it running and The ether gets started then you can do the happy start for the next few starts if that works
Glow plugs are for when its cold out! Warm day like yours the engine would start right over, sounds like you may have a fuel related issue, blocked injectors or a bad fuel pump or even blocked up fuel filter.
First, check the fuel pump. They tend to go out as they are mechanical diaphragm pumps. Its non the passenger side of the engine. If that doesn't fix the problem. Check the fuel filter to see if its clogged. It's on the driver side of the engine compartment on the firewall. If that still doesn't fix the problem then check the electrical trigger wire going to the injector pump. If it doesn't get an electrical signal from the ignition, it won't feed the engine with fuel. If that still doesn't fix the problem the make sure that the fuel lines are still in tact.
Diesels don't need glow plugs technically. The compression of the engine is enough to cause combustion in the right ambient temps. Providing it's not minus numbers the up and down of the piston also generates heat. Check for air in your injector lines or see if the stop valve is partially held off.
Definitely a fuel issue. When it's warm out the engine should run without glow plugs. The fact that you can't start it with new glow plugs mean fuel. Check the fuel pump and fuel filters next.
Pop the fuel lines off at the engine to confirm its making the voyage. IF no bueno, change the fuel filter and check voltage at the fuel pump. How long can diesel sit before going bad? Oh, for giggles, I bought a open box Red Hydrogen for $150...its an awesome tank.
looks like fueling issue.. normally if im working on a diesel engine I first check if there is any pressure from the electrical pump going to the mechanical pump.. even if the glow plugs were bad it should start but would take longer to do so and you would see some black smoke from the exhaust while starting
the one glow plug with blown tip? hyyy? perhaps you should check if there is nothing in piston liner if all good then check: 1.fuel 2.air intake 3. pressure in the combustion chamber Good luck :)
That seems like a fuel issue and not a plug issue, check the filters for dirt and make sure fuel flow is correct. Probably worth checking that fuel lines aren’t blocked with rust or other crap if it’s been sat for a while as it could be blocked before the filter. Possibly worth checking tight turns in the fuel line or check valves if it’s got one.
So, I'm watching a video about glow plugs (have no idea what that is) being replaced in a car I don't care about one bit... Yesterday it was about irrigation today, it's about war vehicles
I know this was a short little video, but I've got to say I love watching them, thanks Zack and I can't wait for the next video on the hummer, 👍🏼👍🏼👍🏼👍🏼🇦🇺🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘
The engine turns really fast, the rings could have come unseated from the wall and not building compression. Put a little oil in the cylinder to help reseat and build compression.
Hey Zack, there a guy called Matt from Offtheranch that used to own a HUMVEE, and now owns a bunch of Cummins, maybe you should give him a call. Also ChrisFix currently owns a HUMVEE so he could be able to help you. Anyways good luck
looks like a fuel issue ,, you can turn vehicle switch to run and wait then stop and do it like 5 times before start to build up fuel pressure from main fuel pump then turn on and see
not a mechanic, just an ex-trucker - but if I had to guess, your engine isn't getting any fuel, and it's not making any compression either; check the air-cutoff, and the fuel pump...
As far as i know, glow plugs are used to help start diesel engines in cold weather, so in your case engine should fire just up even without glow plugs connected. It is propably related to fuel - so first need to check if engine is geting fuel at all. Will wait for next update on this beast.
Is there an engine temp sensor on the injectors? Maybe since it starts cold everything is operating fairly normally, but when warm/hot the fuel pump is somehow bugging out.
Nope that’s not how glow plugs works
@@kevinprimus6366 Desiel engines get they're ignition from the heat of compression, so glow plugs really only help. They still need to be there in warmer weather to help start it sometimes but they really only come into play in colder whether
When I was in the Army and our HMMWV wouldn’t start we covered the exhaust with the manual/book and then cranked it until it started. It always worked.
We used our Kpods or the tip of your boot
Why did that work?
@@byever1 builds pressure up in the engine to help the engine fire.
Don’t worry we still do that. I knew somebody had to have commented this.
How does that work though? I get the logic of trying to keep the pressure high in the cylinder, but if your exhaust system and cylinder are at higher than atmospheric levels, wouldn't that pressure just escape as soon as the intake port opens? Surely while starting the pressure in the intake manifold is around atmospheric levels?
Loosen the nut on the injectors slightly, when you're turning the engine over there should be diesel seeping out, if not it's most likely the distributor pump.
Glow plugs should not even matter if it isn't cold outside. Seems like a fueling issue to me.
Thinking the same
It does get cold in Utah. He said many were bad.
Yeah same hear, Diesel engine not getting diesel is what it sounds like
Yep, sounds like a fueling issue. Check it has fuel, check the lines. Start of with the simple stuff.
Fuel filter? Add a spin off type. Maybe the IP?
I hope you do more project/vlog/whatever type videos on this channel more. I love the phone/tech videos on the main but the more off the cuff content is even better imho.
Do I need to know how to change the glow plugs on a military HumVee? No. Did I still watch the video as soon as it posted, and give it a thumbs up? Yes, yes I did.
However, this repair does apply to nearly any small or medium duty diesel engine. Heavy duty diesel engines don’t have them.
Wait, you didn't explain the "but I only need it for one more day" line!!! that's a teaser for sure.
I'm guessing he's going to turn it into electric.
First Chris, then Uncle Rich, and now Jerry?!?!
also Cleetus...
Uncle rich!
Richie b kidd
Spray a little bug spray in the air filter compartment and if it starts and run it’s compression and if it starts and cuts off it’s fuel , that’s a simple test
👀
I see you peeking👀
Only 18 likes and 2 comments? Lol
You should try to find out what’s inside of things without destroying it
“What’s inside of a HMMWV?”
@@carsman248 breaking them is what makes it fun
Thank you for more non-phone videos. So happy!
I was gonna say a diesel doesn't need glow plugs to run in warm weather so you've definitely got a fuel pressure issue is start from the tank and work your way forward check all filters make sure there's no clogged lines etc
The mkbhd t-shirt looks good
I used to be a hummer technician…. It’s probably either the injection pump or an injector stuck open… remove the injector return lines and check for an injector returning excessive amounts of fuel
Smart control box!!!!
MKBHD merch 🔥
Jerry is everything.
It's not like "not registering" on the multimeter. It is registering as 1. which is infinite resistance. Just like when in air it is showing 1. Means air as well has infinite resistance
Lightning has entered the chat
Hell yeah brother, you are on the Zachs Jerry Rig youtube channel!
Fuel issue, as glow plugs aren't required to start it, just help in cold weather or when engine is cold.
Its either getting no fuel (probably the main cause) or there is no compression. Even in cold weather diesels dont NEED glow plugs to start just to aid them. if its got fuel but no compression then youll see white smoke (un burnt diesel) or its got no fuel, do a compression check to find out, or crack a fuel line to see for fuel, as long as its not common rail which i assume it is not
Nice MKBHD T-Shirt there. Thumbs up for that.
Oooooh I'd love a JerryRig automotive channel! :)
Zack running that PMCS
I was just thinking... Sounds like a fuel issue when you said it 😂
man i love this jerry dude he soo calm and he just tells u everything soo calm and slow like way better than my teachers use to tell me when i was in school he's amazing i want to learn from him and i want to be friends with him for free
Awesome video. Sorry it didn't fix the problem, but I am working out the same issues on a Gov Planet 2001 Humvee, and glow plugs is next on the list.
My man it's been a long time you uploaded video on this channel but nice to see u here again🍅🍎🍅🍎
Give it a shot of happy juice/ether and if she rumbles then it's most likely a fuel issue. If you just need to get it running and The ether gets started then you can do the happy start for the next few starts if that works
Check you have fuel in the tank... check the lines, some diesels also need priming to get air out.
Glow plugs are for when its cold out! Warm day like yours the engine would start right over, sounds like you may have a fuel related issue, blocked injectors or a bad fuel pump or even blocked up fuel filter.
First, check the fuel pump. They tend to go out as they are mechanical diaphragm pumps. Its non the passenger side of the engine. If that doesn't fix the problem. Check the fuel filter to see if its clogged. It's on the driver side of the engine compartment on the firewall. If that still doesn't fix the problem then check the electrical trigger wire going to the injector pump. If it doesn't get an electrical signal from the ignition, it won't feed the engine with fuel. If that still doesn't fix the problem the make sure that the fuel lines are still in tact.
That engine is cranking mighty fast! Could there be a compression issue as well?
All HMMWVs crank that fast, 24V starter is pretty strong.
Hope those injectors are rebuildable.
Dude it's a perfectly sunny t-shirt day - GLOW PLUGS?
Thanks for sharing just watch on Facebook. Which I were there to help you get it running
1:37 Man said "3 EICH INT SOCKET"
Pump Gas the pedal once before starting it
Diesels don't need glow plugs technically. The compression of the engine is enough to cause combustion in the right ambient temps. Providing it's not minus numbers the up and down of the piston also generates heat.
Check for air in your injector lines or see if the stop valve is partially held off.
Are you going to drive it under water like Cleetus McFarland? Ahahahhahahaha great vlog!
Definitely a fuel issue. When it's warm out the engine should run without glow plugs. The fact that you can't start it with new glow plugs mean fuel. Check the fuel pump and fuel filters next.
Pop the fuel lines off at the engine to confirm its making the voyage. IF no bueno, change the fuel filter and check voltage at the fuel pump. How long can diesel sit before going bad? Oh, for giggles, I bought a open box Red Hydrogen for $150...its an awesome tank.
Try removing the airfilter if it still doesnt start its pbb fuel
Check the neutral safety switch.
looks like fueling issue.. normally if im working on a diesel engine I first check if there is any pressure from the electrical pump going to the mechanical pump.. even if the glow plugs were bad it should start but would take longer to do so and you would see some black smoke from the exhaust while starting
the one glow plug with blown tip? hyyy?
perhaps you should check if there is nothing in piston liner
if all good
then check:
1.fuel
2.air intake
3. pressure in the combustion chamber
Good luck :)
I was almost ready to make a "even car's have headphones jack installed" 😅😅😅
Did you check if you have fuel? Or if the fuel pump is working? Maybe there's a problem there also. It seems that there is no spark in the engine.
Great car.
That seems like a fuel issue and not a plug issue, check the filters for dirt and make sure fuel flow is correct. Probably worth checking that fuel lines aren’t blocked with rust or other crap if it’s been sat for a while as it could be blocked before the filter. Possibly worth checking tight turns in the fuel line or check valves if it’s got one.
I doubt that the timing is off because it sounded good
Yeah your right actually probably not timing but I’d think it’s possibly crap in the fuel
That would make for a great electric conversion vehicle
Where are the 91B? I was a 91A but they still made me try to fix these! lol
So, I'm watching a video about glow plugs (have no idea what that is) being replaced in a car I don't care about one bit... Yesterday it was about irrigation today, it's about war vehicles
Glow plugs does its job when cold. When warm usualy they dont even turn on
Hell yeah
If it where a glow plug issue you should be getting smoke out the exhaust after cranking that much. No smoke = no fuel.
I know this was a short little video, but I've got to say I love watching them, thanks Zack and I can't wait for the next video on the hummer, 👍🏼👍🏼👍🏼👍🏼🇦🇺🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘
Great information for the next time I need to change my glow plugs! Where exactly are the glow plugs in a Model X?
Now “JERRY RIG EVERYTHING” 😎
That's not how you measure the resistance. When your hand is in contact with the leads, you add your body resistance to it.
Nice ride
not a glow plug related problem try covering up the exhaust as someone is starting it to create more backpressure.
Never dealt with diesel, but my dads 65 mustang with a carburetor, pump the gas pedal a couple times while cranking and it’ll turnover
Pumping the pedal is something you only do on cars that have carburettors in them.
👍
@@bananaman5021 thanks banana man
We want Zack to grow beard and moustache
And hair
That’s cursed mate
i subscribed cuz u know how to fix a HUMVEE engine
And also check the air filter in case it needs replacement
BTW you should not touch both probs with your fingers as your body adds resistance...
Finally someone spells it right
Glow plugs are only needed when it's cold outside. It is not getting fuel
MKBH shirt fits you
I knew this channel would have more video's.
But they are little short, projects needs 30 minute videos!
Love the MKBHD shirt
I like your MKBHD shirt🔥🔥🔥🔥🔥
check the fuel pressure it's most likely a fuel pump or the injectors are plugged. Also wear gloves those vehicles are full of sharp edges.
You are literally rigging everything now Jerry
plss do more video like this plss i love u r vids pls do a regular update....
well done
Mkbhd merch looking nice 🙂
You know what they say a cross thread is a tight thread!
really loved to see ur vlog
I would check the fuel lines first.
💖
That MKBHD shirt on the thumbnail tho 👌
Very nice! DIY car maintenance.
🔥🔥🔥
The engine turns really fast, the rings could have come unseated from the wall and not building compression. Put a little oil in the cylinder to help reseat and build compression.
It turns fast because it has a 24 volt starter. All military HMMWVs turn over that fast.
At least all the phones you take apart and reassamble usually still work, so I'm sure, you'll figure this out, too 😉😀
Hey Zack, there a guy called Matt from Offtheranch that used to own a HUMVEE, and now owns a bunch of Cummins, maybe you should give him a call. Also ChrisFix currently owns a HUMVEE so he could be able to help you. Anyways good luck
And Demolition Ranch
@@joshuamorehead6124 Well of course, but Matt hasn't really repaired the Brave HUMVEE there so I just omitted it.
1:37 ah yes, the legendary "three heich int" socket
looks like a fuel issue ,, you can turn vehicle switch to run and wait then stop and do it like 5 times before start to build up fuel pressure from main fuel pump then turn on and see
That wont do anything since it has a mechanical lift pump.
@@85TransAm406
idk maybe its clogged up or leaking
The mkbhd shirt tho🥰
Love you bro
Theres a guy named chris that fixes cars here on youtube. nice lad.
Is it an expensive awesome vehicle to keep as a weekend driver ?
How many cars do you own ???
Cambry says too many
is there an air bubble in the fuel lines? i know diesel have issues priming and getting any fuel if there's any air in the lines at all.
Did you check if the lift pump is working?
Jarry love you bro😍😍😍
Chris Fix will be able to provide some inputs as he has a humvee too..
He has a hummer, not a humvee
@@sureshkumarc.k6534 oh yeah my bad, will the internals not be the same?
@@suhailameen8907 yeah, probably not, because chris swapped a duramax engine into his,and this one probably has the original Detroit diesel
not a mechanic, just an ex-trucker - but if I had to guess, your engine isn't getting any fuel, and it's not making any compression either; check the air-cutoff, and the fuel pump...