What happens when a Duramax injector is replaced?
What happens when a Duramax injector is replaced?
The injectors are made by Denso (as is the whole fuel system) and have to be programmed into ECM when replaced. It is a long story but I had an injector failure that caused a hole in a piston and blowing oil out the rear main. The engine had to be totally replaced.
What causes a piston to fail on a diesel engine?
The piston and ring assembly of a diesel engine fit tightly in the cylinder bore to provide high compression, in order to cause ignition of the injector fuel. The fuel is delivered at a precise moment, in an exactly metered quantity and is metered by the injection system.
What happens if you have an injector failure?
It is a long story but I had an injector failure that caused a hole in a piston and blowing oil out the rear main. The engine had to be totally replaced. They came back and blamed the Tune as to the failure. I don’t want to get into that because I am now doing some research to find out if anyone else has had or knows of this type of failures.
When does the injection process start on a diesel engine?
The injection process starts when the needle lifts off the seat and opens the orifices for the fuel to be squirted out under very high pressure. As an example, in a particular engine the combustion process from about 7º Before Top Dead Centre, (BTDC) to 30º After Top Dead Centre (ATDC).
The injectors are made by Denso (as is the whole fuel system) and have to be programmed into ECM when replaced. It is a long story but I had an injector failure that caused a hole in a piston and blowing oil out the rear main. The engine had to be totally replaced.
Why are the Pistons on my Duramax not working?
Low-quality castings from its suppliers and a reduced amount of meat present in the wrist pin area (thanks to the use of wrist pin bushings) are to blame for factory piston failure. In most cases, the cast-aluminum piston cracks along the center line of the wrist pin, as shown above.
Where is the CP3 injection pump in a Duramax?
The CP3 injection pump sits in the valley of the engine between the cylinder heads and is driven by the camshaft gear, and it has two main jobs: get fuel from the tank up to the engine, and pressurize the fuel to 26,000psi and ultimately inject it into the engine.
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.
