Most of our EFI fuel systems prime to 40psi; mine does too. I have noticed some folks' fuel pressure remains at 40psi long after the key is off for hours or even days.
My system drops to 20psi after sitting for 5 minutes. I thought this may be an indication of a failing fuel pressure regulator so I replaced it yesterday. Unfortunately, the result was the same. It was not until I clamped my fuel line from the HP pump to the fuel rail did the pressure cease to drop.
My pressures with the engine running are fine and without issue.
Does this static pressure drop mean anything? Should I care?
Sent from my SAMSUNG-S3 using Tapatalk 2 on CyanogenMod
My system drops to 20psi after sitting for 5 minutes. I thought this may be an indication of a failing fuel pressure regulator so I replaced it yesterday. Unfortunately, the result was the same. It was not until I clamped my fuel line from the HP pump to the fuel rail did the pressure cease to drop.
My pressures with the engine running are fine and without issue.
Does this static pressure drop mean anything? Should I care?
Sent from my SAMSUNG-S3 using Tapatalk 2 on CyanogenMod