MustangWorks.com : Ford Forums - View Single Post - Will An In-Line Fuel Pump Help?

Jeff Chambers · 12-31-2006, 08:48 PM

[QUOTE=1989GT]1st run (Base Pull) 326 RWHP/ 311 RWTQ (11.2 A/F) (15* timing)
2nd Run: 346 RWHP/ 320 RWTQ (13.8 A/F) (15* timing)
3rd Run: 353 RWHP/ 319 RWTQ (14.5 A/F) (16* timing)
4th Run (150 Shot) 502 RWHP/ 511 RWTQ (15.2 A/F) (13* timing)

Sure looks like its out of pump and injectors to me. That 15.2 with the wet system sure tells me that something is maxed.

Tuned two Porsche cars yesterday heading to the 24 Hours of Daytona. Second car was drifting lean beyond 5200rpm. Replaced the pump with a brand new pump of the same size/type (stock replacement) and the car perked up and continued to make power to 7200rpm. All the MW analyzers in the world can't take in to account all the variables. If this guy is really concerned about the health of his motor, he'd get it back to a professional that can diagnose what's happening.

12-31-2006, 08:48 PM	#12
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Will An In-Line Fuel Pump Help? [QUOTE=1989GT]1st run (Base Pull) 326 RWHP/ 311 RWTQ (11.2 A/F) (15* timing) 2nd Run: 346 RWHP/ 320 RWTQ (13.8 A/F) (15* timing) 3rd Run: 353 RWHP/ 319 RWTQ (14.5 A/F) (16* timing) 4th Run (150 Shot) 502 RWHP/ 511 RWTQ (15.2 A/F) (13* timing) Sure looks like its out of pump and injectors to me. That 15.2 with the wet system sure tells me that something is maxed. Tuned two Porsche cars yesterday heading to the 24 Hours of Daytona. Second car was drifting lean beyond 5200rpm. Replaced the pump with a brand new pump of the same size/type (stock replacement) and the car perked up and continued to make power to 7200rpm. All the MW analyzers in the world can't take in to account all the variables. If this guy is really concerned about the health of his motor, he'd get it back to a professional that can diagnose what's happening. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"