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B20 E fuel pump check valve 140-160

posted by  142 guy on  Sun Sep 14 11:41 CST 2014
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last visit: Wed Oct 22 20:18 CST 2014
[RELATED]

When I set the fuel pressure on my B20E, I noticed that after coming up to pressure and shut down of the pump, the system was slowly losing pressure. Blocking off the regulator return line did not arrest this problem and I don't have any leaking injectors so I suspect that the check valve on the discharge of the fuel pump is allowing leak back. The only reason that this is an issue is that it typically means that I don't always get a successful start on the first try because I need the first try to re pressurize the system (this used to happen on my 745T with Bosch LH).

On my 3 port pump, the fuel pump check valve is screwed into the back of the pump body; but, the Volvo parts manual does not show it as a separate part. Does anybody know whether this check valve is available and if so, what the part # is? Otherwise, its go for a replacement pump or perhaps just live with it!






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