MustangWorks.com : Ford Forums - View Single Post

84LX89GT · 03-11-2004, 02:34 AM

Be careful with the 255 lph fuel pump. I had one in my '89 GT for about a week before i removed it. The return line back to the tank was a restriction and caused it to run at 85 psi, i checked - no kinks in lines, no obstructions and not plugged in tank, the fuel pressure regulator was fine, i put back in the 110 lph and it ran back at 40 psi (initially 30 psi because i tried to cut back on the 255 lph pump). It may for some reason just happened to me

but the car ran fine after removing the 255lph pump. The 1/4" return line is fairly small going back to the tank, you may be wasting your money.
You car may run fine, but mine didn't.

03-11-2004, 02:34 AM	#6
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Be careful with the 255 lph fuel pump. I had one in my '89 GT for about a week before i removed it. The return line back to the tank was a restriction and caused it to run at 85 psi, i checked - no kinks in lines, no obstructions and not plugged in tank, the fuel pressure regulator was fine, i put back in the 110 lph and it ran back at 40 psi (initially 30 psi because i tried to cut back on the 255 lph pump). It may for some reason just happened to me but the car ran fine after removing the 255lph pump. The 1/4" return line is fairly small going back to the tank, you may be wasting your money. You car may run fine, but mine didn't. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)