Time for glow plug set # 3

Stupid check engine light is back on. Got a dead glow plug in cylinder # 8. Back to the dealership for another set. Looks like 60K is about all thats to be squeezed out of them.

sounds like my chubby.. the 92 blazer get a full tune up every 30k cause it burns up the #5 and #7 spark plug and starts to miss really bad.. i just had to do it a few days ago.. an hour and 7 mins to do plugs, wires, cap, rotor, oil change, air cleaner and coil.. today i was replacing the battery cause it has been slowly dieing more and more each morning when i fire it up. 250 bucks that could have been used twards the kiddies christmas but getting to the shop everyday to make more money is more important.. lol

merlin5577 wrote:

Stupid check engine light is back on. Got a dead glow plug in cylinder # 8. Back to the dealership for another set. Looks like 60K is about all thats to be squeezed out of them.

That sucks. Bout how much does a dmax glow plug run? They pretty easy to get too, or is it one of those tear the darn thing half apart to get to them deals?

007jimmy wrote:

sounds like my chubby.. the 92 blazer get a full tune up every 30k cause it burns up the #5 and #7 spark plug and starts to miss really bad.. i just had to do it a few days ago.. an hour and 7 mins to do plugs, wires, cap, rotor, oil change, air cleaner and coil.. today i was replacing the battery cause it has been slowly dieing more and more each morning when i fire it up. 250 bucks that could have been used twards the kiddies christmas but getting to the shop everyday to make more money is more important.. lol

Sounds like you need valve guides on those two cylinders. Crank pressure is probably pushing oil past the valve and fouling your plugs. Just a thought.

johnboggs21 wrote:

That sucks. Bout how much does a dmax glow plug run? They pretty easy to get too, or is it one of those tear the darn thing half apart to get to them deals?

I honestly have no idea about the cost. The truck is still under warranty for the glow plugs and glow plug controller so the dealership has foot the bill. They're not too bad to replace, very similar to the Powerstroke 7.3L.

merlin5577 wrote:

007jimmy wrote:

sounds like my chubby.. the 92 blazer get a full tune up every 30k cause it burns up the #5 and #7 spark plug and starts to miss really bad.. i just had to do it a few days ago.. an hour and 7 mins to do plugs, wires, cap, rotor, oil change, air cleaner and coil.. today i was replacing the battery cause it has been slowly dieing more and more each morning when i fire it up. 250 bucks that could have been used twards the kiddies christmas but getting to the shop everyday to make more money is more important.. lol

Sounds like you need valve guides on those two cylinders. Crank pressure is probably pushing oil past the valve and fouling your plugs. Just a thought.

probley but being that i rebuilt the motor 3 years ago im not to worried about it. it burns up the cap and rotor on the same cylinders so i really have no idea whats going on. not to big of a deal cause it is dependable

I think the glow plugs for the dmax are 24 bucks i know the one for my 7.3l are 15 bucks but not sure about the dmax, Srry about you luck man but at leas it is still under warenty...

Thanks Ryan. From what i'm told, the LB7 with CA emissions have a different 'tune' on the GP controller and are notorious for burning plugs.

Yea a buddy of mine has an 04 Dmax and he goes thru thoes glow plugs We have put 3 sets on his truck since he has had it.

I hope my LMM DMax isn't gonna start burning up glow plugs too. {fingers crossed}
So far so good this winter.

The construction company I worked for has an 07 Duramax also, Glenn and it already has about 90K miles and the only problem it's had is a fouled fuel filter.

No worries Glenn. The problem is only on the LB7 trucks because their are two different 'versions' of the ECM. The LLY and up trucks all came the same (roughly) from the factory and the problem was rectified.

merlin5577 wrote:

johnboggs21 wrote:

That sucks. Bout how much does a dmax glow plug run? They pretty easy to get too, or is it one of those tear the darn thing half apart to get to them deals?

I honestly have no idea about the cost. The truck is still under warranty for the glow plugs and glow plug controller so the dealership has foot the bill. They're not too bad to replace, very similar to the Powerstroke 7.3L.

One thing I like about my 7.3, no removing anything to change glow plugs. Only takes about 5 minutes for me to change one, i have a couple spares in the glove box.

Ryan_Crossman96 wrote:

I think the glow plugs for the dmax are 24 bucks i know the one for my 7.3l are 15 bucks but not sure about the dmax, Srry about you luck man but at leas it is still under warenty...

that sucks....the glow plugs for mine are 10 bucks each

Sorry, jus had to compare to mine lol

John, I checked into it, the Glow Plugs for my truck are $15 a piece.

15 aint too bad, beats the hell outta 24 bucks a pop

Hey Glenn..... How does $60 a piece sound for LBZ/LMM plugs?

Wooo!!!! $480.00 plus taxes for my 8 cylinder

Im in the Same boat Glenn..... they can be had much cheaper than that, i had to buy a GP in a hurry so i picked one up at the stealer.... i just about pooped a brick when i found out they wanted $60/each!!!!!
http://www.merchant-automotive.com/glowpluglbz.aspx

never ended up using the darn thing, guess i have a spare new one now, but i had mine out just recently when i did my headgaskets and they looks good, put some never seize back on the threads and put em back in, got 170k kms on the engine now

little tidbit of info here, did you know that on LBZ/LMM trucks the fuel injector sprays directly onto the glowplug tip to help speed up warmup times and to help with cold starts? and that you have an intake heater grid as well? my truck warms up 2x faster than my cummins ever did with only intake heater grid.....

you would think that something burning red hot being sprayed with fuel would be prone to failure.... doesnt seem to be the case