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TC - my ears are open! I have the turbo modified for a bit more pressure and about twice the volume. I know the pump needs some mods to get the effect of the turbo.
Randal - the thing will run a long time on the contents of the fuel filter. Diesels will idle forever on not much fuel. I really think I have a fairly simple solution given the factory arrangement. I don't know what German brainiac decided to make the engine stop by applying vacuum, or why they didn't just put in a solenoid in place of the vacuum thingie.
The way it works is that the vacuum deal inside the injection pump forces the rack back to the point that no fuel flows. No fuel flows thru the injectors so they don't lose prime either. This leaves the whole rest of the fuel system charged with fuel and ready to fire up as soon as the key is cranked. Anything that kills fuel ahead of the pump would require repriming the system before the engine would run again. By using a vacuum can and a NO solenoid any time I remove power the injection pump gets vacuum and the engine stops. Just what the ECTA ordered and it works for a regular shut off as well.
I've chased my tail on this a lot and I'm pretty sure this is as simple as it can be done and meet all the requirements. I'm really NOT one to overthink stuff - you can ask ME!
Dan
Randal - the thing will run a long time on the contents of the fuel filter. Diesels will idle forever on not much fuel. I really think I have a fairly simple solution given the factory arrangement. I don't know what German brainiac decided to make the engine stop by applying vacuum, or why they didn't just put in a solenoid in place of the vacuum thingie.
The way it works is that the vacuum deal inside the injection pump forces the rack back to the point that no fuel flows. No fuel flows thru the injectors so they don't lose prime either. This leaves the whole rest of the fuel system charged with fuel and ready to fire up as soon as the key is cranked. Anything that kills fuel ahead of the pump would require repriming the system before the engine would run again. By using a vacuum can and a NO solenoid any time I remove power the injection pump gets vacuum and the engine stops. Just what the ECTA ordered and it works for a regular shut off as well.
I've chased my tail on this a lot and I'm pretty sure this is as simple as it can be done and meet all the requirements. I'm really NOT one to overthink stuff - you can ask ME!
Dan
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