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+--- Thread: aftertreatment injector (/showthread.php?tid=1775)
aftertreatment injector - jman1978 - 05-20-2017
will aft injector fire at shutoff
I was doing leak test and got sprayed
after i cut engine off
RE: aftertreatment injector - JMBT - 05-20-2017
Yikes! Fuel or DEF? I think they both purge when you shut the key off.
RE: aftertreatment injector - jman1978 - 05-20-2017
fuel
a short burst
RE: aftertreatment injector - Hammerhead - 05-27-2017
(05-20-2017 )jman1978 Wrote: fuel
a short burst
I don't know whether this is normal or not. Logically it makes sense to relieve the pressure with a short burst, otherwise the residual heat would expand the fuel after shutdown, potentially causing over pressure damage in a closed circuit.
RE: aftertreatment injector - JMBT - 05-27-2017
I think the after treatment fuel injector purges on shut off because you can take the fuel line off the top when the truck is off and there is no fuel present.