Holley keeps draining into engine

1

1969mach1351

Member

Apr 18, 2003

285

0

16

Sacramento, CA

Dec 18, 2004

#1

• Dec 18, 2004

• #1

My buddies Holley 850 keeps draining the fuel into the engine when it sits. It will do this in only a week and then the floats stick. I rebuilt it (I've done many with no problems) and starting having this problem again in about 4 months. The carb is less than 5 years old and is in good shape other than this problem. What is the reason for it to keep draining the bowls?

 

ratio411

Founding Member

Apr 21, 2002

3,870

73

109

Pensacola FL

Dec 18, 2004

#2

• Dec 18, 2004

• #2

Is it draining onto or into the engine?

 

1

1969mach1351

Member

Apr 18, 2003

285

0

16

Sacramento, CA

Dec 18, 2004

#3

• Dec 18, 2004

• #3

into

 

pabear89

Active Member

Apr 15, 2003

2,126

0

46

High in the Hills of So Ca with the Voices in My H

Dec 19, 2004

#4

• Dec 19, 2004

• #4

Internal leak, Check the power valve and seal.
the Check ball in the pump, warped metering block.
And if the float is sticking after bowls empty the needle&seat is set too high.

PB

 

Max Power

Active Member

Jul 31, 2003

1,774

1

36

St Paul

Dec 19, 2004

#5

• Dec 19, 2004

• #5

It is very common for Ford fuel pumps to not release fuel pressure properly. The residual pressure forces its way past the needle and seat and leaks into the engine. I would try a new fuel pump as well.

 

ratio411

Founding Member

Apr 21, 2002

3,870

73

109

Pensacola FL

Dec 19, 2004

#6

• Dec 19, 2004

• #6

What he said...
I lean to ruptured PV or split gasket at PV.