Gas in the oil pan again... Fuel Pressure Question

Strype

Cuthbert catcher

Founding Member

May 11, 1999

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Huntsvegas, AL

Apr 12, 2011

#1

• Apr 12, 2011

• #1

93 5speed
66k
HCI

Gas is in the oil pan again. Car sputters and surges and pops. I'm guessing I blew the diaphram in the Adj Fuel Pressure Regulator because the last thing I did was jack the fuel pressure up to 55... There are a couple of spark plugs with thick black soot. Heh live and learn right?

My plan is to by another FPR, put on some 24lb injectors (already have a better pump installed), and change the plugs yet again.

I am thinking that I need to copy the 93 Cobra setup. Does anyone know what the fuel pressure was set at in a 93 Cobra? They cam with 24's if I recall.

Should I change the EEC too?

 

95Vert383AOD

15 Year Member

Jun 10, 2008

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New Bedford, MA

Apr 12, 2011

#2

• Apr 12, 2011

• #2

I think its like 39psi with the regulator vacuum removed.

 

9

90stang5speed

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Jan 19, 2009

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Columbus Ga

Apr 12, 2011

#3

• Apr 12, 2011

• #3

if you put 24's in without tuner or a calibrated MAF, I would think you are still going to run rich.

 

Chuckman

GTFO you fat, heavy bastard

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st. louis, mo

Apr 12, 2011

#4

• Apr 12, 2011

• #4

90stang5speed said:

if you put 24's in without tuner or a calibrated MAF, I would think you are still going to run rich.

Click to expand...

not if you run the cobra eec, it used a regular production maf with an eec programmed for the 24's, and the rest of the fuel system should be the same as lx/gt. as to whether you go that route or with a cal'd maf is up to you.

 

Beasty306GT

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Dec 19, 2002

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Oxford,Mass

Apr 12, 2011

#5

• Apr 12, 2011

• #5

u should be running around 40 psi fuel

 

Strype

Cuthbert catcher

Founding Member

May 11, 1999

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104

Huntsvegas, AL

Apr 12, 2011

#6

• Apr 12, 2011

• #6

Thanks folks!

I have both tubes for my C&L...

Do I need the EEC?

 

Chuckman

GTFO you fat, heavy bastard

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Oct 21, 2005

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st. louis, mo

Apr 13, 2011

#7

• Apr 13, 2011

• #7

Strype said:

Do I need the EEC?

Click to expand...

not with the tube for the 24's, though some say an eec tuned to 24's with a stock (or 94/95) maf is a better route for driveabilitys sake. since you already have the cal'd maf, i'd say stick with it.