Does anyone have any idea when the primer pump inside the fuel tank on an Octavia II VRS CR Diesel is supposed to activate? Is it when the ignition is switched on? Is it when the engine is actually cranked? Is it when the drivers door is opened?
Fuel tank and all 3 pumps have been changed. All fuel lines have been changed an a new common rail has been installed. Fuel filter housing has also been changed. All fuel pumps have been primed with diagnostic until fuel has been coming out at the injectors. The engine has not been started until this has been done. Both the electric pumps work when priming with diagnostic.
The fuel pump relay has all the feeds when engine is cranking and running but no live feed to the primary pump when the ignition is on. Being mostly experienced with PD engines I know the primary pump engages when the ignition is switched on before starting.
Can't seem to find any info for the CR engine......