Quote:
Originally Posted by dcb
holding in the fuel cutoff kill switch while coasting in gear in your bosch pump style vw diesel is probably not the best idea, no.
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No, but why would you kill fuel while coasting *in* gear?
Killing fuel at the shutoff solenoid while coasting in neutral should be no problem, as that's identical to a normal shutdown procedure (except the vehicle's moving, but the driveline is disconnected from the engine).
Diesels have a fuel shutoff solenoid. Some energize to run (hold power to keep fuel open, fail-safe), some energize to kill (momentary action to shut down fuel). I would imagine that most automakers would prefer the former for legal reasons but continuous duty solenoids do cost more. These solenoids act on the high-pressure side so the injection pump is not starved during shutdown (that would cause a royal PITA to re-prime the fuel line if you aren't running a self-priming electric lift pump). Research your vehicle to determine which shutdown mode your engine uses and kill or activate that solenoid appropriately.