Right Fuel Pressure for 65 Fastback?

KaraKedi

Member

May 26, 2008

83

0

7

Istanbul/Turkey

Aug 31, 2009

#1

• Aug 31, 2009

• #1

Hi Gurus,
I changed my stock fuel pump with Holley Fuel Pump, don't ask me WHY, i do not know

When i installed new fuel pump, i got some problems

1) blue smoke from exhaust
2) start-up problem

Than, i read some articles, and buy Fuel Pressure Regulator and Fuel Pressure Gauge then installed yesterday.

I set 4 1/2 psi. Is it OK for my 289 A code Fastback

Now, solved some problems. What is the reason of problems?

Regards

 

2

2+2GT

10 Year Member

Apr 25, 2009

3,333

10

79

Southeastern Pennsylvania

Aug 31, 2009

#2

• Aug 31, 2009

• #2

KaraKedi said:

Hi Gurus,
I changed my stock fuel pump with Holley Fuel Pump, don't ask me WHY, i do not know

When i installed new fuel pump, i got some problems

1) blue smoke from exhaust
2) start-up problem

Than, i read some articles, and buy Fuel Pressure Regulator and Fuel Pressure Gauge then installed yesterday.

I set 4 1/2 psi. Is it OK for my 289 A code Fastback

Now, solved some problems. What is the reason of problems?

Regards

Click to expand...

Well, the flippant answer would be you read too many magazines.

Basically, the Holley pump is more than you need. Dig the old pump out and try it. You might find your troubles go away.

 

KaraKedi

Member

May 26, 2008

83

0

7

Istanbul/Turkey

Aug 31, 2009

#3

• Aug 31, 2009

• #3

2+2GT said:

Well, the flippant answer would be you read too many magazines.

Basically, the Holley pump is more than you need. Dig the old pump out and try it. You might find your troubles go away.

Click to expand...

Not possible, because it's stolen
I have to solved all problem with new setup

 

jcode68

Active Member

Jul 15, 2003

892

1

29

Massachussetts

Sep 1, 2009

#4

• Sep 1, 2009

• #4

You want the fuel pressure to be right around 7 psi for carb applications. Set your fuel pressure regulator accordingly and I would also suggest checking the float levels in your carb. the reason for the blue smoke is likely because you had too much fuel pressure causing a flooding situation.

 

R

runawayabc123

Member

Mar 9, 2007

192

0

16

Wisconsin

Sep 2, 2009

#5

• Sep 2, 2009

• #5

I thought blue smoke was burnt oil and black was unburnt fuel. How does too much gas flooding make it blue?

 

S

sparky

New Member

Jan 24, 2003

20

0

0

Sep 2, 2009

#6

• Sep 2, 2009

• #6

What kind of carb are you running? If it's Edelbrock, then no more than 6 psi according to their manual.

 

KaraKedi

Member

May 26, 2008

83

0

7

Istanbul/Turkey

Sep 3, 2009

#7

• Sep 3, 2009

• #7

sparky said:

What kind of carb are you running? If it's Edelbrock, then no more than 6 psi according to their manual.

Click to expand...

Holley 600 CFM 4 bare

 

jcode68

Active Member

Jul 15, 2003

892

1

29

Massachussetts

Sep 3, 2009

#8

• Sep 3, 2009

• #8

runawayabc123 said:

I thought blue smoke was burnt oil and black was unburnt fuel. How does too much gas flooding make it blue?

Click to expand...

Yup, you are right, my bad. Doesn't explain why he would have blue smoke after replacing the fuel pump, so likely looking at 2 distinct problems. Set the pressure to 7 psi and check float levels and let us know where things are at.

 

blown65

Founding Member

Jul 7, 1999

1,938

4

39

Queen Creek Arizona

Sep 3, 2009

#9

• Sep 3, 2009

• #9

Yup shoot for 6-7. You could prob get away with 4.5 if there was low demand on the fuel system.

 

blown65

Founding Member

Jul 7, 1999

1,938

4

39

Queen Creek Arizona

Sep 3, 2009

#10

• Sep 3, 2009

• #10

Sorry can't edit my post.

There is nothing wrong running more pump than you need, or anything wrong with the holley pumps. I'd pump mult holley pumps in before I'd ever put a pos bg pump in. .