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gomi_otaku, Technician
Category: Australia Car
Satisfied Customers: 3459
Experience:  VW Technician, VW FastTrack, VW Academy, VW Certified
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Please can you help, when I switch my diesel musso off it

Customer Question

Please can you help, when I switch my diesel musso off it takes awhile to shut down. Sometimes 5 or more seconds and sometimes a lot longer. What should I be looking for?
Submitted: 1 year ago.
Category: Australia Car
Expert:  gomi_otaku replied 1 year ago.

There should be a shutoff valve in the intake (where a throttle body would be on a gas engine) that shuts off the flow of air to the engine, shutting it off. This system will prevent "runaway diesel if you have blowby in the rings, otherwise the car will suck oil past the rings and keep running on that, even if it has no fuel. The only sure way to shut off a diesel is by eliminating the source of air, in an emergency you can put a solid object across the intake.