Manually operated glow plug question???

[dhaumann69166]

My M1038 has the glow plugs on a push button instead of coming on with the key. I am trying to figure out how long I need to hold the button for them to warm up? Also wondering if all models of HMMWV glow plugs are the same? Mine has the flat connector where the wire plugs onto them but I see most of the glow plugs for sale for the HMMWV have the round plug. Is there any difference other than the connector?

 

[DatGuyC]

Sounds like your truck has been converted to 12 volts? The flat blade plugs are 12 volt versions, round plug is 24 volt.

 

[Action]

About 7 - 10 seconds and only if the motor hasnt ran in several hours.
Humvees did not come with a push button gp circuit or spade plugs.
Doesnt the cucv use 24v spade plugs?

 

[Evil Dr. Porkchop]

About 7 - 10 seconds and only if the motor hasnt ran in several hours.
Humvees did not come with a push button gp circuit or spade plugs.
Doesnt the cucv use 24v spade plugs?

CUCVs use 12v spade plugs.

 

[tage]

Sounds like your truck has been converted to 12 volts? The flat blade plugs are 12 volt versions, round plug is 24 volt.

or at least hope they did

recent GP truck?

 

[dhaumann69166]

I have found 24v spade plug glow plugs for CUCV just wanted to make sure they were the same fit. Previous owner put the glow plugs on a push button when they hacked the wiring harness coming through the firewall. Eventually I might wire it back in factory but for now it works....kind of. I think I might have some plugs going bad because if it’s not plugged in for a couple hours it won’t start below 65 degrees. Need to test them or just replace them all and be done with it.

 

[Action]

I have found 24v spade plug glow plugs for CUCV just wanted to make sure they were the same fit. Previous owner put the glow plugs on a push button when they hacked the wiring harness coming through the firewall. Eventually I might wire it back in factory but for now it works....kind of. I think I might have some plugs going bad because if it’s not plugged in for a couple hours it won’t start below 65 degrees. Need to test them or just replace them all and be done with it.

If what isn't plugged in for a couple hours? A block heater or the plugs?

 

[tage]

If what isn't plugged in for a couple hours? A block heater or the plugs?

They'll swell.

I don't think it'll be as effective as a block heater.

 

[dhaumann69166]

Block heater plugged in. There is no way to “plug in” glow plugs

 

[Action]

Block heater plugged in. There is no way to “plug in” glow plugs

With homemade electrical system, anything can happen...

 

[tage]

With homemade electrical system, anything can happen...

With how easy they are to burn out and pita to take out when swollen. I would get a few of those block heater pads, or splice in the cooling system to swap spit with a running engine.