2H glow plug life ? (1 Viewer)

[mcmlxxxv]

I guys .... Changed my glow plugs last year and they seem to have failed again ....

I have a set of 24v Bosch installed , with a Wilson switch and aftermarket relay. I don't really like it ... I think it's the reason my glow plugs keep dying

Not sure what's left of the original system and what I need to make it work fine or if it even worth it .... Thing is Canadian winters are quite cold in QC and I need a solution.

I know voltage is different than 24v on some systems so if I fix it I want to get the good ones.

So 2h owners ... What do you have that last ... And work fine ?

 

[duncanrm]

I tend to change them around the 10year mark, but even this seems premature when I pull them out. This service life is more about making sure they come out cleanly before there's an issue. One year service life, even in your arctic climate, is terrible - you've had a test lamp on them to confirm? How long is your glow operation taking on a cold morning?

Mine really dont work very hard really.. even in winter a 7 second glow on my 60 is enough - 10.5V plugs in a 12V system. Our winter is pretty mild though, rarely drops below 0°C and most winter mornings are more like 5-6°C.

The glow plugs in my little 2L powered LN85 are coming up on 15 years now and will be swapped out soon.

NGK is the pick of the bunch in my opinion.

 

[mcmlxxxv]

Well lol ... 5-6°c is what we have now . It will drop around -20°c in normal winter days and the worse can be around -38°c , that's why I want to make it right before the "real" cold weather starts.

My truck is on 24v and I know the OEM system use 12v plugs . That's why they were all toasted when I got the truck.

Only 24v plugs I found were Bosch , they did fine all winter last year . But I'm pretty sure they are toasted now as when I push my switch the voltage in the cluster don't even flinch a little ....

I will look it closer this week end and find what's wrong .

There is 2 resistors that seem to preheat the intake ... They are not wired at the moment but I would like to have them working too , might be worth it

 

[duncanrm]

There is 2 resistors that seem to preheat the intake ..

I may be wrong, I dont believe the function of those two resistors is to pre-heat the intake.. especially given their rear location. Its my understanding the resistors just provide a voltage drop for the two stage Superglow operation. The intake is just a convenient place for them to dissipate heat from operation, certainly not enough heat to help with starting. If I'm wrong, I'm keen to be put right!

Your reported winter temps are entirely incomprehensible to me.. -38 is quite insane!

 

[mcmlxxxv]

I may be wrong, I dont believe the function of those two resistors is to pre-heat the intake.. especially given their rear location. Its my understanding the resistors just provide a voltage drop for the two stage Superglow operation. The intake is just a convenient place for them to dissipate heat from operation, certainly not enough heat to help with starting. If I'm wrong, I'm keen to be put right!

Your reported winter temps are entirely incomprehensible to me.. -38 is quite insane!

Yeah not white hell like North Quebec ... But still very cold .

You are probably right about those resistors ... Still any heat is welcome . Will read more on this

Will inspect the system this week end and see if it can be improved .