2011 m56 idles rough after high pressure pump change.

Forum for Infiniti M37, M56 M35h Hybrid and Q70 owners.
jaystew66
Posts: 5
Joined: Fri Feb 18, 2022 5:26 pm
Car: 2011 Infiniti M56
2008 Infiniti G37 coupe
2003 Infiniti G35 coupe

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I replaced my high pressure fuel pump, idler cam and lifter. After changing these parts I started the car and it run perfect for about 10 mins. After that, the car started running and idling rough. I now have a p0345 and p0090 code. I also replaced the electric fuel pump in the gas tank. In order to start the car I now have to spray starter fluid into throttle body. Help is needed. Thanks in advance.


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VStar650CL
Technical Expert
Posts: 11929
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

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P0345 is the bank2 cam sensor right next to the pump, and P0090 is a performance code for the pump (i.e., the pump works but not correctly). Has to be something wrong at the nose of that cam.

jaystew66
Posts: 5
Joined: Fri Feb 18, 2022 5:26 pm
Car: 2011 Infiniti M56
2008 Infiniti G37 coupe
2003 Infiniti G35 coupe

Post

I hope this is not the problem because more than likely would have remove the timing chain cover to access the cam. I did line up the cam marks with the timing chain.

jaystew66
Posts: 5
Joined: Fri Feb 18, 2022 5:26 pm
Car: 2011 Infiniti M56
2008 Infiniti G37 coupe
2003 Infiniti G35 coupe

Post

Its a brand new cam. Update. Went to do a oil change and found the whole block and filled up with gas. I still don't know what happened. I decided to rebuild the whole engine. Do you know anybody that specializes in the vk56 engines?


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