Hesitation/Fuel pressure ???'s Plz Help!!

03-23-2001, 10:54 AM

I ran at Atco two weeks ago. Car ran strong, everything felt great. I got back from the track (about an hour and a half drive) and shut the car off to change the rear tires back to my dailys. When I started the car back up after it sitting for fifteen minutes or so, it ran fine under normal driving, but as soon as I would get on it, it stumbled and didn't feel like it wanted to pull. I backed off the timing and increased the fuel pressure in case of det. being the culprit. Still doing it. I noticed yesterday, while playing with the fuel pressure again, when you remove the vacuum line to the pressure reg, the gauge stays the same whether you block the vac line or not. Could a vac leak be my whole problem? Thanx, sorry for the long post.

------------------
'89 Notch: R134a A/C conversion, Hedman Shorties, 2.5" MAC cat-back, 3.73 gears, MAC "Racer's choice" shifter, RAM clutch, FRPP quadrant & cable, MAC cold-air kit, 75mm Pro-M, 65mm TB, GT-40 intake, 24# inj, 1.72RR's, 190pump, alum. driveshaft, '95 GT spindles & Brakes, polished '99 Cobra wheels w/ 245/45/17 rubber.

[This message has been edited by 89NB50 (edited 03-23-2001).]

LX XLR8R · 03-23-2001, 11:00 AM

check the vacuum lines first but if those are fine then maybee ur regulator took a $hit..if its a holly adj then its the regulator..send it back and they will send you a new one

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..
AIM=onesillynotch

Mean50 · 03-23-2001, 11:04 AM

I am sorta having the same problem. What was that about the Holley adjustable regulator? That is what I have.

------------------
89 LX Coupe
306, 10:1 compression, Holley Heads, Intake, and Cam package, 70 mm Throttle body and Mass Air, 30 lb injectors, 255 lph fuel pump, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, Centerforce dual friction clutch, 4.10 gears
50-175 hp Nitrous Works kit, 5" Auto Meter Shift Light

Nutty 5.0 · 03-23-2001, 03:17 PM

The Holley and Crane suck because they are essentially stock regulators hacked off tops with an adjuster on it.

------------------
-Nutty 5.0
93 GT Red/Grey
S trim, Edelbrock 6037 heads, E cam, BBK longtubes w/cats, 3 chamber Flowmasters, BBK Alum. underdrive pullies, Cobra intake, Accel fuel regulator, BBK 70mm t.b., 73mm C&L meter, ram air, 1.7 roller rockers, Mac upper and lower strut tower braces, FMS lowering springs, Factory Five upper and lower control arms, Speedware Cobra R 17X9 wheels, 3.73 gears and ram air hood, Cobra wing, and grille insert.

03-23-2001, 10:54 AM	#1
89NB50 Guest Posts: n/a	Hesitation/Fuel pressure ???'s Plz Help!! I ran at Atco two weeks ago. Car ran strong, everything felt great. I got back from the track (about an hour and a half drive) and shut the car off to change the rear tires back to my dailys. When I started the car back up after it sitting for fifteen minutes or so, it ran fine under normal driving, but as soon as I would get on it, it stumbled and didn't feel like it wanted to pull. I backed off the timing and increased the fuel pressure in case of det. being the culprit. Still doing it. I noticed yesterday, while playing with the fuel pressure again, when you remove the vacuum line to the pressure reg, the gauge stays the same whether you block the vac line or not. Could a vac leak be my whole problem? Thanx, sorry for the long post. ------------------ '89 Notch: R134a A/C conversion, Hedman Shorties, 2.5" MAC cat-back, 3.73 gears, MAC "Racer's choice" shifter, RAM clutch, FRPP quadrant & cable, MAC cold-air kit, 75mm Pro-M, 65mm TB, GT-40 intake, 24# inj, 1.72RR's, 190pump, alum. driveshaft, '95 GT spindles & Brakes, polished '99 Cobra wheels w/ 245/45/17 rubber. [This message has been edited by 89NB50 (edited 03-23-2001).]

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03-23-2001, 11:00 AM	#2
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	check the vacuum lines first but if those are fine then maybee ur regulator took a $hit..if its a holly adj then its the regulator..send it back and they will send you a new one ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one.. AIM=onesillynotch

03-23-2001, 11:04 AM	#3
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	I am sorta having the same problem. What was that about the Holley adjustable regulator? That is what I have. ------------------ 89 LX Coupe 306, 10:1 compression, Holley Heads, Intake, and Cam package, 70 mm Throttle body and Mass Air, 30 lb injectors, 255 lph fuel pump, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, Centerforce dual friction clutch, 4.10 gears 50-175 hp Nitrous Works kit, 5" Auto Meter Shift Light

03-23-2001, 03:17 PM	#4
Nutty 5.0 Registered Member Join Date: Apr 2000 Location: Collegeville, Pa, USA Posts: 75	The Holley and Crane suck because they are essentially stock regulators hacked off tops with an adjuster on it. ------------------ -Nutty 5.0 93 GT Red/Grey S trim, Edelbrock 6037 heads, E cam, BBK longtubes w/cats, 3 chamber Flowmasters, BBK Alum. underdrive pullies, Cobra intake, Accel fuel regulator, BBK 70mm t.b., 73mm C&L meter, ram air, 1.7 roller rockers, Mac upper and lower strut tower braces, FMS lowering springs, Factory Five upper and lower control arms, Speedware Cobra R 17X9 wheels, 3.73 gears and ram air hood, Cobra wing, and grille insert.