fuel pressure question (or problem)

[jhonda]

I checked my fuel pressure today due to the lack of power and increased water temp....anyways intiall pressure at idle is 30psi if I rev it up it goes to 40....is this right or am I doing it wrong. Any imfo or ideas??
Thanks
Jason

 

[bill302]

remove the vacuum line to the regulator and check pressure...it should read 38-40 psi with the vacuum line removed...do you heve an adjustable fuel pressure regulator?

 

[cenok is family]

remove the vacuum line to the regulator and check pressure...it should read 38-40 psi with the vacuum line removed...do you heve an adjustable fuel pressure regulator?

+1

 

[BYRDPE]

Does the vacuum line need to be plugged when setting fuel pressure?

 

[jhonda]

I do but it is not installed. I am just testing the orginal one. I know it is burning real rich at start up and sometimes at idle and everyonce and awhile when I get on it.

 

[rossford]

you have to ck the amount of fuel coming out also,a car low on gas can have good fuel pressure. engine running hot doz not sound like fuel, also ck back pressure,cloged cat maybe,timming,ect.

 

[jhonda]

well my car has a offroad x pipe. And timing is at 15degrees

 

[white99gt]

I do but it is not installed. I am just testing the orginal one. I know it is burning real rich at start up and sometimes at idle and everyonce and awhile when I get on it.

How do you know its rich? Wideband?

A aftermarket fuel pressure regulator is a waste ,if the car is running properly its not needed.

I ran a stock regulator with a 255lph high pressure pumps and no "richness" and on my new combo im still running a stock regulator.

 

[jhonda]

black smoke, smell

 

[white99gt]

black smoke.Even if its running right you will see that sometimes at WOT.Smell doesnt mean its running rich,if it SMELLS rich its actually running LEAN..

 

[jhonda]

Im not saying your wrong but I have never heard that before, my 90f150 smelled rich burned rich I know because the exhaust would blow a steady blue flame out on the hwy if i dropped it from 4th to 3rd and stomped on it

 

[jrichker]

Any setting or testing of the fuel pressure needs to be done with the fuel pressure vacuum line disconnected and the vacuum line plugged.

 

[jhonda]

well turned out to be the fuel pressure so far

I checked my fuel pressure with the stock regulator and it was running 44lbs of pressure. Put new regulator on adjusted to 40lbs and everything seems good so far