Another insufferable maf code post

Ommateal

*** update # who cares...***

Nissan agreed that 30psi was too low and recommends replacing the fuel pressure regulator.

...can't seem to find them for sale anywhere.

From dream car to nightmare.

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Red 370z Sport 6m
Mods: Stillen 25 row Race Oil cooler|FIXED ESCL|Muffler delete|TEIN Springs|Tint|Varrstoen ES2 Rims|NRG Stealth Knob|Kenwood touchscreen|

Z_ealot

Maybe this is the part they are referring to? Seems to come up a lot when you search for fuel pressure regulator.

https://www.z1motorsports.com/fuel-d...hr-p-9194.html

Edit: looks like the fuel pressure regulator is built into the fuel pump assembly so i guess time for a new fuel pump?

Ommateal

Thanks Z_ealot - Yeah this is just a pulse damper (they help regulate the pressure at the rails) there should be 2 of them and they are right in the engine bay one is seen easily near the left intake. They are cheap and I might replace just to see if it helps, but as far as nissan dealer is concerned they said im getting 30psi, which would point more to the pump/basket/regulator/lines as far as I know. . . THis issue is driving me nuts and obv Nissan is only shooting answers in the dark - feel like they cant really diagnose it correctly.

__________________
Red 370z Sport 6m
Mods: Stillen 25 row Race Oil cooler|FIXED ESCL|Muffler delete|TEIN Springs|Tint|Varrstoen ES2 Rims|NRG Stealth Knob|Kenwood touchscreen|

SouthArk370Z

Sounds like great logic to me.

Personally, I wouldn't take the dealership's word for it (unless they were going to fix it under warranty). I'd check the fuel pressure myself or get a 3rd party to do it.

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