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  Autolite 4100 Secondaires won't open

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Author Topic:   Autolite 4100 Secondaires won't open
deadhead
Gearhead

Posts: 153
From:
Registered: Sep 2002

posted 10-19-2002 11:50 AM     Click Here to See the Profile for deadhead   Click Here to Email deadhead     Edit/Delete Message   Reply w/Quote
The new engine is running, but the secondaries on the 4100 won't open. The carb appears to be working fine otherwise, the secondaries aren't binding. I'm pretty sure it's a vacuum issue, but could use some expert advice on where to look. The vacuum passage on the carb's lid is clear.

deadhead

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Moneymaker
Administrator

Posts: 19751
From: Lyons, IL, USA
Registered: May 99

posted 10-19-2002 12:09 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
REMOVE THE REAR DIAPHRAM COVER AND INSPECT THE RUBBER DIAPHRAM ITSELF FOR PERFORATIONS.

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

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
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!"

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deadhead
Gearhead

Posts: 153
From:
Registered: Sep 2002

posted 10-19-2002 12:17 PM     Click Here to See the Profile for deadhead   Click Here to Email deadhead     Edit/Delete Message   Reply w/Quote
Alex,

If I've forgotten the secondary check ball or it fell out, would the secondaries open?

Thanks,

deadhead

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Moneymaker
Administrator

Posts: 19751
From: Lyons, IL, USA
Registered: May 99

posted 10-19-2002 12:49 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
They would open sooner. I rarely ever set up a vaccum secondary Autolite anymore. The progressive mechanical linkage works so much better and is totaly trouble free.

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

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
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!"

IP: Logged

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