Inpa fuel pump test, pump noise coming from engine bay?
I'm trying to diagnose a dead check valve as I have to crank the car twice again ( Hella replaced 3 years ago)
For the life of me I cannot hear the pump priming on cold start / first start so I thought I would try to activate it manually via inpa so I can at least hear it.
However I'm not sure if this is the right test, when I activate it the pump sound is coming from the engine bay which makes no sense... to me it sounds more like the SMG pump?
Is my INPA messed up? I have a Aus spec M3 so no EKP for the pump.
For the life of me I cannot hear the pump priming on cold start / first start so I thought I would try to activate it manually via inpa so I can at least hear it.
However I'm not sure if this is the right test, when I activate it the pump sound is coming from the engine bay which makes no sense... to me it sounds more like the SMG pump?
Is my INPA messed up? I have a Aus spec M3 so no EKP for the pump.