|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
07-18-2020, 04:44 PM | #1 |
Junior Member
Join Date: Jul 2020
Location: Auckland, NZ
Posts: 6
|
Holley 94 question
Our brigade is restoring a 1942 3 ton Jailbar fire truck. I’ve just got it running but fuel leaks from pump and carb. Have rebuilt pump -that’s now good. But in the middle of rebuilding the carb and it’s missing a check valve (part# 9594) under the accelerator discharge nozzle (part#9577). Can anyone tell me a) what’s the missing part do and b) is it ok to run without it? I’m reluctant to put it back together without knowing the implications of leaving this check valve out...thanks heaps in advance!
|
07-18-2020, 06:26 PM | #2 |
Senior Member
Join Date: May 2010
Location: Masterton, New Zealand
Posts: 3,834
|
Re: Holley 94 question
Chances are you have it...it looks like the needle out of the fuel inlet needle valve assembly
__________________
Unfortunately, two half wits don't make a whole wit! |
Sponsored Links (Register now to hide all advertisements) |
|
07-18-2020, 06:34 PM | #3 |
Junior Member
Join Date: Jul 2020
Location: Auckland, NZ
Posts: 6
|
Re: Holley 94 question
Thanks Brian, it’s definitely not in the carb when I pulled it apart. I have sourced another but really want to know what’s its function. Is this a mod that people do in these carbs?
|
07-18-2020, 07:02 PM | #4 |
Senior Member
Join Date: Jun 2010
Location: Detroit suburb, MI
Posts: 3,706
|
Re: Holley 94 question
If the check weight isn't in there, then it's possible to siphon fuel out of the accelerator pump discharge nozzle (#9577), which would leave the channel dry, and possibly stumble/backfire after you stop and try to take off again.
Sal |
07-18-2020, 07:28 PM | #5 |
Junior Member
Join Date: Jul 2020
Location: Auckland, NZ
Posts: 6
|
Re: Holley 94 question
Brilliant! Thanks for the info. I’ll wait for the new part before reassembly😀
|
07-18-2020, 08:18 PM | #6 |
BANNED
Join Date: May 2010
Posts: 3,019
|
Re: Holley 94 question
Sponsored Links (Register now to hide all advertisements)
the fuel inlet needle. Without the needle in place the vacuum inside the carb will cause fuel to be siphoned out thru the accelerator pump discharge 'squirter' at all times......not just when the pump is depressed. Charlie ny |
07-18-2020, 08:46 PM | #7 | |
Junior Member
Join Date: Jul 2020
Location: Auckland, NZ
Posts: 6
|
Re: Holley 94 question
Quote:
|
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|