Flipping out Please Help ASAP

NeQX

Founding Member

Sep 30, 2002

904

0

0

Infront Of You, NY

Mar 11, 2004

#1

• Mar 11, 2004

• #1

my stupid BBK AFPR wont go below 44psi no vacuum, screw can go so loose it comes out it just stops going down after 44 its so retarded, its a auto-meter sport comp fp gauge screw in perfectly into shrader valve off a dual fitting 1 going to n2o 1 for gauge, im going to dyno tune car tomorrow before track on sunday please help me get this fuel pressure gauge lower

 

B

BlueThunder1988

New Member

May 19, 2003

102

0

0

Mar 12, 2004

#2

• Mar 12, 2004

• #2

Check and make sure that your rubber fuel return lines aren't kinked a bit... if not, bad AFPR maybe?

 

NeQX

Founding Member

Sep 30, 2002

904

0

0

Infront Of You, NY

Mar 12, 2004

#3

• Mar 12, 2004

• #3

checked lines, they seem fine

 

NeQX

Founding Member

Sep 30, 2002

904

0

0

Infront Of You, NY

Mar 12, 2004

#4

• Mar 12, 2004

• #4

buMp, dyno it 2 hours hurry

 

Rick 91GT

Mustang Master

Nov 29, 1999

9,692

95

99

PA

Mar 12, 2004

#5

• Mar 12, 2004

• #5

Could be a weak FP regulator that will not hold back the pressure since now your new pump is nice and strong and not very restricted like the clogged one. This is a common issue with many regualtors as they were or get old, it also depends on the gas that is rab through them, some fuel and or additives have more effect of the diaphram.

 

NeQX

Founding Member

Sep 30, 2002

904

0

0

Infront Of You, NY

Mar 12, 2004

#6

• Mar 12, 2004

• #6

ok im leaving to go get dyno'd maybe the mustang place can figure it out while im there, ill post results after guys

 

NeQX

Founding Member

Sep 30, 2002

904

0

0

Infront Of You, NY

Mar 12, 2004

#7

• Mar 12, 2004

• #7

Ok I figured this crap out finally, fuel pressure worked best at about 50psi even with the 255lph in, they said its due to the C&L cause it leans the car out.............first pull was 255rwhp which means

13.3@102 was with 255rwhp

So, since we changed the plugs which somehow got shot from the old pump going really lean the next pull on dyno was

308.1rwhp
336.8rwtq

Track Sunday! car is cured