Quote:
Originally Posted by torino73
Do not kill your lift pump. Starving your injection pump, especially such a high pressure pump, will cause cavitation. I work in an industry that uses high pressure pumps and I’ve seen the damage of cavitation. It essentially pulls the metal right off the inside of the pump.
Older diesels used a valve to cut air in and emergency. No diesel will run without air. Have you considered an actuated swing-out, or butterfly valve before turbo?
I’m a newbie, so I’m a little naive. What’s the purpose of cutting the engine like you are trying to do; to keep rolling at speed with the engine killed? Why not just turn the ignition off? It works for me.
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Don't kill the lift pump !
Having a lift pump go out tends to wipe out the main pump. That's $2000 last time I checked.
I would cut power to all 4 injectors. Its safer than the other options.