fuel pressure testing ?

crazy5.0 · 07-07-2002, 01:42 AM

With the vacuum connected should the pressure go up when revving the car?

PKRWUD · 07-07-2002, 03:42 AM

Yes, because as you rev the engine, you are opening the throttle, which reduces the manifold vacuum, which opens up the regulator, which raises the fuel pressure.

Take care,
-Chris

Stang Runner · 07-07-2002, 11:53 AM

you can test the Vac on the fuel reg by making a Vacum buy putting a line on it and Suck in and hold it there to see if it loses a Vac. might want to make sure it is a clean hose tho... LOL Trust me!!!

07-07-2002, 01:42 AM	#1
crazy5.0 Registered Member Join Date: Nov 2001 Location: Mission Viejo,Ca Posts: 37	fuel pressure testing ? With the vacuum connected should the pressure go up when revving the car? __________________ 89gt,3.27's,Auburn,tremec 3550,Steeda tri-ax,aluminum driveshaft,Asp underdrives,Flowmast er 3 chamber,March ram air,130 amp alternator,Koni yellow struts,Kyb shocks,Pirelli p-6000's,MM's lower control arms and full length subs

07-07-2002, 03:42 AM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Yes, because as you rev the engine, you are opening the throttle, which reduces the manifold vacuum, which opens up the regulator, which raises the fuel pressure. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

07-07-2002, 11:53 AM	#3
Stang Runner Registered Member Join Date: Jun 1999 Location: Walker, MI, USA Posts: 1,202	you can test the Vac on the fuel reg by making a Vacum buy putting a line on it and Suck in and hold it there to see if it loses a Vac. might want to make sure it is a clean hose tho... LOL Trust me!!! __________________ Engine: steel mounts, Under drive pulleys, K&N, GT-40 Intake ported Lower, No power steering, No A/C, Mac cold intake, 65MM TB, 255 Fuel pump, 24's, AFR 165 58cc, Rocker Arms 1.7with the stock Cam, 1 5/8 short headers, offRoad X-pipe Drive Train: 3.55, T-5 with a Pro 5.0 shifter 12.656@107.71MPH See It at www.T-racing.com/mustang.htm

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