Fuel Pressure Readings
#1
Fuel Pressure Readings
I have a stock 1999 502 Mag MPI. I have done a search and it appears I should have 41-46 PSI of fuel pressure. But, I couldn't find WHEN I should have this pressure? Is it measured with the key switch on and the pump running, at idle, at WOT, etc?
Also, should fuel pressure increase or decrease as rpms increase?
Thanks.
Also, should fuel pressure increase or decrease as rpms increase?
Thanks.
#2
Re: Fuel Pressure Readings
If you've done the research, and that's what it tells you for fuel pressure with a MPI (Multi Port Injection), I would think that's what you should have ALL the time.
Robert
Robert
#4
Re: Fuel Pressure Readings
Originally Posted by Tonto
If you've done the research, and that's what it tells you for fuel pressure with a MPI (Multi Port Injection), I would think that's what you should have ALL the time.
Robert
Robert
And yes you are correct it should have the same fuel pressure all the time. Thanks.
#6
Re: Fuel Pressure Readings
Originally Posted by BGIII
Scott,
I believe the lower numbers were for the older VST systems and the higher numbers are for the cool fuel system. That being said, I'd rather buy a manual now and know for sure rather than an engine and a manual later.
I believe the lower numbers were for the older VST systems and the higher numbers are for the cool fuel system. That being said, I'd rather buy a manual now and know for sure rather than an engine and a manual later.
#9
Re: Fuel Pressure Readings
Originally Posted by BGIII
Mine are 2000's with cool fuel and I checked it static last summer and it was in the mid 40's.
Last edited by onesickpantera; 04-12-2006 at 10:21 AM.