Is there a problem with the glow plug on my Duramax?
Is there a problem with the glow plug on my Duramax?
Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone. Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years.
Are there any problems with the Duramax engine?
The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants. Not specific to one version of Duramax in particular (ex: LB7, LLY, LBZ, LMM or LML), the problem exists across all generations.
What to do if your Duramax injector is not working?
To relieve this problem, the wiring harness (or affected portion of the harness) will need to be replaced/repaired. Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone.
What are the problems with the Duramax LB7?
One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat.
The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants. Not specific to one version of Duramax in particular (ex: LB7, LLY, LBZ, LMM or LML), the problem exists across all generations.
Why is my DPF not working on my Chevy Duramax?
Click to expand… It might be time to highway trip it for 30 minutes 1 way and 30 back and see what it does. Short tripping these trucks will clog that DPF up quicker than normal and I think some of the sensors don’t work 100% until the truck is hot.
One thing the ’01-’04 LB7 Duramax is notorious for is injector failure. The two primary failure points of the factory injectors are internal cracking of the injector body itself and corrosion-induced failure of the internal ball seat.
What causes a Duramax injection pump to fail?
As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.
Are there any issues with the Duramax check engine lights?
Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.
How are glow plugs used in diesel engines?
To combat this, diesels use glow plugs which are essentially metal rods that stick into the cylinders. Upon engine startup, the control module sends an electrical current to the tips of the plugs which provides the necessary heat to allow the fuel to ignite.
What was the problem with the LBZ Duramax in 2006?
Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years. The concern was that the glow plug module would over cycle the glow plugs, creating a scenario in which the tip of the glow plug could actually deform and/or break off in the engine.
How does the glow plug controller work on a Duramax?
The glow plug controller has the ability to perform internal checks, an open or a short to ground on each of the glow plug circuits. If the glow plug controller senses a problem in a glow plug circuit, the glow plug on the affected cylinder will be disabled and the glow plug controller will send an error message to the engine control module (ECM).
To combat this, diesels use glow plugs which are essentially metal rods that stick into the cylinders. Upon engine startup, the control module sends an electrical current to the tips of the plugs which provides the necessary heat to allow the fuel to ignite.
What are the most common Duramax 6.6L engine problems?
5 Most Common LBZ Duramax 6.6L Engine Problems. 1 1. LBZ Cracked Pistons. The LBZ is revered for its tune-only performance capabilities. With various upgrades, this engine is easily capable of 2 2. Duramax LBZ Water Pump Failure. 3 3. Glow Plug Failure – LBZ. 4 4. Allison 1000 Transmission Line Leaks. 5 5. Duramax EGR Problems.
What are the symptoms of a bad glow plug?
Glow plugs are pretty cheap and easy to replace so I recommend refreshing with a new set if you have any of these symptoms: 1 Hard starting / difficulty starting (especially in cold weather) 2 Rough idling 3 Cylinder misfires 4 Glow plug engine light 5 Black smoke coming from the exhaust
Are there any issues with the Duramax pickup?
This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.
Are there any issues with the Duramax primer button?
Under the primer button there are some orings that fail on a regular basis. This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs.
What are the issues with the Duramax glow plugs?
Not only does the threaded metal part of the glow plug seize in the head, but the tips of the glow plugs sometimes bulb making it really difficult to get them out. Also the metal strips that connect the glow plugs together on each side corrode and break causing issues. Lastly we replace a fair amount of glow plug controllers as well.
Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.
This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs. The glow plugs burn out over time and can be a real nuisance to remove from the aluminum heads sometimes.
Under the primer button there are some orings that fail on a regular basis. This can produce long cranks and hard starts. Glow Plug System Issues – Nearly half of the check engine lights that come in for the Duramax pickups are for glow plugs.
When do glow plugs on a diesel engine go bad?
They are subject to extreme temperature changes and high combustion pressures. Since a diesel engine may have as many as 10 glow plugs, one for each cylinder, you may not notice when one goes bad. But if two, three or more go bad; you will notice the engine has become very difficult to start.
How often do glow plugs go out on Silverado?
I have a 2009 Silverado 2500HD 125k miles. I have had Glow plugs go out about every 3 months or so. It always seems to be the #5 and #8 most of the time. And the #8 is a PITA to get out. After reading it seems it is either a short, and I can see no cracks breaks, etc on the wire from the glow plug, or the glow plug controller.
Often, you can verify the problem by wiggling the wires around the injector. If the problem goes away (even momentarily), you’ve identified the affected zone. Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years.
I have a 2009 Silverado 2500HD 125k miles. I have had Glow plugs go out about every 3 months or so. It always seems to be the #5 and #8 most of the time. And the #8 is a PITA to get out. After reading it seems it is either a short, and I can see no cracks breaks, etc on the wire from the glow plug, or the glow plug controller.
What is the code for a bad glow plug on a Chevy?
Last month it showed a continuous check engine light with the underlying code PO677 (a failed glow plug on the number 7 cylinder). The local Chevy dealership found that the bad glow plug was also seized into the aluminum head.
Glow plug failure was a concern on the 2006 model year LBZ and LLY Duramax models, but the problem should have been long corrected for owners of these years. The concern was that the glow plug module would over cycle the glow plugs, creating a scenario in which the tip of the glow plug could actually deform and/or break off in the engine.
