What causes the injector on a Duramax to fail?
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 solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the injector.
Are there any problems with the Duramax fuel pump?
It can also be relatively difficult to prime the fuel system once air has been introduced into the system, such as when the fuel filter is changed. The 2001 to 2004 LB7 fuel filter housings seem to be the most prone to problems. Water pump failures for Duramax engine are somewhat common.
Why is my Duramax diesel engine not starting?
I have seen more leaks causing no starts, loss of prime and low fuel rail pressure codes from poor fitting aftermarket fuel filters use Delco only. Remember when dealing with power loss and fuel pressure issues the duramax has no in- tank or frame mount fuel pump pushing fuel to the engine.
What are the symptoms of a bad Duramax fuel regulator?
Common Duramax Fuel Pressure Regulator Problems 1 Black Smoke. As we’ve said before, one of the most common problems that fuel pressure regulator experience is black smoke. 2 Strong gas smell. What are some of the most common symptoms of a bad fuel pressure regulator? 3 Hesitation on the gas pedal. 4 A decrease in power acceleration. …
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 solenoid style Bosch units found in the LB7 employed a non-hardened internal ball seat to seal the injector.
Are there any problems with the LLY Duramax?
In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.
What happens when a Duramax engine goes down?
Not only does this mean game-over for the engine, but it results in a truck that’s down for weeks (if not months) and a huge chunk of change missing from your wallet. The failure is most common in higher horsepower engines, but can still occur in moderately modified and even stock power plants.
What happens if the fuel injector is not working?
Fuel injectors are a vital part of a complex fuel management system. Furthermore, New technology has made fuel injectors more precise than ever in dispensing fuel. If the fuel injectors are not operating properly, then other parts of the engine will be affected as well.
What are the injector lines and seals on a Duramax LB7?
Reseal the Injectors in your 2001-2004 GM 6.6L Duramax LB7 with the Bostech ISK118 Injector Seal Kit. Bostech gaskets and seals are manufactured from top quality materials that meet or exceed OE specifications for factory-like performance and service life. Features: Sold Individually 13 Month Unlimited Mileage Warranty
What is a 43% injector set for a Duramax?
The BD-Power 1076656 43% Injector Nozzle Set for your 2004.5-2005 GM 6.6L Duramax is designed to increase power and performance in your truck. Made from genuine OE nozzles, the 43% upgrade is geared towards street and strip applications for trucks with fuel system, tuning and air flow upgrades. Features: 43% 90HP-120HP Sold As A Complete Set
What kind of injectors do I need for a Duramax LLY?
The Bostech DEC010825 Injector Line is a direct replacement for Cylinder 1 or 8 in your 2004.5-2005 GM 6.6L Duramax LLY. Eliminate the risk of fuel contamination by installing new injector lines when replacing injectors in your Duramax.
What causes the injector on a Duramax to leak?
Leaking Injectors—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.
Are there any Duramax fuel lines left in stock?
WFLNHB 8Pcs 904-126 904-127 904-128 904-129 Fuel Injector Lines Fuel Injector Supply Line Replacement for Chevy Chevrolet Silverado 2500HD 3500 GMC Sierra 2500HD 3500 6.6L LB7 Duramax Diesel 2001-2004 . Only 7 left in stock – order soon.
Can a Duramax LB7 injection line be replaced?
The Alliant 6.6L Duramax LB7 Injection Lines are a cost effective replacement for your 01-04 GM 6.6L Duramax LB7. Stock injector lines are prone to corrosion build up due to their through the valve cover design. When lines are removed during service, existing protocol requires cleaning the lines or replacing with new.
How much does it cost to replace a Duramax injector?
The recommended resale from my supplier on these remanufactured injectors is about $1,600 for the set of four. Replacing all four injectors required removing both right- and left-bank rocker arm covers and the overlay of wiring harnesses and ducting covering of each.
What happens when a Duramax CP4 pump fails?
CLICK HERE to purchase our LML CP4 High Pressure Fuel Pump Failure Kit The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates.
Can a diesel fuel additive prevent CP4 pump failure?
Using a commercially available diesel fuel additive can be helpful, but cannot be guaranteed to prevent CP4 pump failure.
When is a Duramax CP4 fuel pump failure?
If the body casing of the pump is cracked, as in the picture, or you find metallic debris on the fuel pressure regulator screen (pictured right) this is indicative of a pump failure. GM Mandates that the below steps be performed:
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.
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.