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  Mustangsandmore Forum Archive
  Old Fords and Mercurys
  Holley C5ZF-E Carburator problems

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Author Topic:   Holley C5ZF-E Carburator problems
James41
Journeyman

Posts: 1
From: Alexandria, In
Registered: Jan 2006

posted 01-17-2006 08:59 PM     Click Here to See the Profile for James41        Reply w/Quote
Hi, I'm new to these forums, I just purchased a 41 Ford Business Coupe with a newer v-8 installed and I am having some problems with the carburator (C5ZF-E autolite 1.08). When I drive it, I don't hear the secondaries kicking in. It has vaccum secondaries. I do not know much about carburators and am trying to learn. When I manually open the primaries, gas feeds into them, but when I manually open the secondaries, I do not see any gas flow at all. I've been looking for a manual to read regarding carburators, but haven't been able to locate any. Any advice provided would be greatley appreciated. Thanks

capri man
Gearhead

Posts: 8777
From: doerun, ga.
Registered: Nov 2000

posted 01-17-2006 09:13 PM     Click Here to See the Profile for capri man        Reply w/Quote
welcome to m&m james. i dont have a clue to the answer to your question. but there is a guy on here named alex and he is old enough to remember those carbs!!!!

------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.25 @93mph 1/8
1.54 60ft 50 % of the fun dragracing is meeting people who will give you the shirt off their back to wipe the grease off your hands.
M&M member #839 http://i2.photobucket.com/albums/y6/mike470/adel2.jpg

Scott H
Gearhead

Posts: 1480
From: Chicago area
Registered: Mar 2005

posted 01-17-2006 09:59 PM     Click Here to See the Profile for Scott H        Reply w/Quote
Those Autolites are great carbs.

The secondaries open with engine vacuum, but there is not another accelerator pump, so you won't see a squirt of fuel when you open them by hand.
You typically don't hear a very big roar or rush of air when they open.
Its possible the diaphragm is ruptured and they may not be functional.
An excellent manual would be the 65 or 66 Ford Shop Manual for Mustangs, it has a lot of detailed drawings and explanations of how the carb works, plus info on specs and settings.

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 01-18-2006 01:06 AM     Click Here to See the Profile for Moneymaker        Reply w/Quote
If you womp the throttle under the hood, you can usually see the secondaries open if they are working.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28

The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

[This message has been edited by Moneymaker (edited 01-18-2006).]

ted
Journeyman

Posts: 81
From: Central Texas
Registered: May 2003

posted 01-19-2006 03:54 PM     Click Here to See the Profile for ted        Reply w/Quote
With the carburetor off the vehicle and the primary throttle blades wide open, you can take an air nozzle to check for secondary throttle opening. Do this by streaming the air down into the primary throttle bore past the brass tube that activates the secondaries and if all is fine, the secondaries will open.

------------------
Ted E.
Big inch Fords are plenty fast, but Y-Blocks's are fun when they run in the low 9.60's @ 135mph.

Moneymaker
Administrator

Posts: 29200
From: Lyons, IL, USA
Registered: May 99

posted 01-19-2006 04:17 PM     Click Here to See the Profile for Moneymaker        Reply w/Quote
I tried to make it less complicated.

------------------
Alex Denysenko
Co-Administrator and Moderator

NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28

The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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