Diesel injection at the injector is missing

IVANPASCHA

MEMBER
1995 CHEVROLET TRUCK
6.5L
V8
2WD
AUTOMATIC
178,800 MILES

After the lift pump was replaced, I was able to drive another 35 km, after which the engine just stopped. Injection pump DS 4 renewed, diesel filter renewed, new hoses from filter to DS 4 replaced. The lift pump presses in the diesel properly, and the return flow is free of air bubbles. New PMD replaced. What else can it be? Solenoid valve on the pump with 12 volts is there. The cable from the optocoupler to the electronics is measured. Available on PMD 5 volt and 12 volt. Winnebago Brave P 30 Motortyp F GM 6.5 Turbo diesel

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,632 POSTS

It sounds like you have removed the injectors. how can you tell an Injector is not working? Also is it one injector or all of them? If just one, it could be clogged here is how you can change it out.

Description:
The fuel injector driver receives an inject command signal from the Powertrain Control Module (PCM) and provides a current regulated output to the fuel solenoid that controls injection. It also returns an injection pulse width signal back to the PCM to inform it when the fuel solenoid has actually seated.

A scan tool will display the injection pulse width feedback in milliseconds. If the PCM detects an error in the fuel inject response time, a DTC 35 or DTC 36 will set.

Let's run the codes as well.

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.

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