1.5 dci won't start

Forum for Engine, Exhaust, Drivetrain, ECU
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Andympeck
Posts: 9
Joined: Sat Jan 09, 2021 1:01 pm
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by Andympeck »

Hello. I have a 2012 Nissan Qashqai that won't start. There is fuel to the pump, and when cranking it pumps it straight back to the return side. I have had a scope on the fuel pressure regulator and it has no signal. The +12v is present but no ground. A scan tool registers no faults, and that the cam and crank are synchronised. Any ideas, Thankyou in advance

andy2019
Posts: 1786
Joined: Sat Oct 26, 2019 8:47 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by andy2019 »

have you changed the fuel filter? as could be air in the system
Andympeck
Posts: 9
Joined: Sat Jan 09, 2021 1:01 pm
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by Andympeck »

I did, but in response to the problem of it not starting to eliminate air leaks. If I disconnect the return pipe from the pump, diesel sprays out, so the pump is pumping. The pressure regulator / suction control valve isn't getting a signal. It has 12v but no ground.
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