My 2007 Volvo XC90 cranks but would not start. Low pressure pump sends fuel to high pressure pump but then fuel would NOT get to common rail - Bosch CP3 0445010111 HP pump is not pumping fuel through outlet.
In this video I've removed fuel inlet hose from HPFP and connected it to a clear hose to check the fuel flowing speed. I turned the key to Position II for like 1 second (and not cranking the engine) and yes again...it is flowing but loads of air bubbles coming through and then flow stopped. Then I crank the engine, it flows again and stops with air bubbles.
Car is now sorted. The issue I had was...I had not done the priming correctly, therefore there was lots of air in the fuel line. I did the key On and OFF cycle for over 20 times (as advised by Volvo) and then car started straight away.
If you remove any fuel system line (like a hose or a banjo bolt or high pressure pipe etc), it sucks air in then stops sending fuel to common rail. When you turn the key to ON (ignition on) and if you have air then you could hear fuel flowing (blowing raspberry noise) in there inside the fuel filter housing under rear passenger seating location. So you have to prime until you hear nothing but whining noise. This is achieved by above ON and then OFF method.
Thank you
Негізгі бет Автокөліктер мен көлік құралдары Volvo XC90 D5 Low Pressure Pump Fuel Flow Check - Seventh Stage
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