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73 carborator troubles????
https://www.slantsix.org/forum/viewtopic.php?t=2776
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Author:  Wayne Sellers [ Wed Oct 17, 2001 5:07 pm ]
Post subject:  73 carborator troubles????

I have a 73 duster ,and just rebuilt the 1 barrell holley on the 225 slant 6. It idles and pulls decent, but i have the ideling screw turned just about all the way in .If i back it off it wont run.If anyone can please help.

hillbillygirl@triad.rr.com

Author:  Doc [ Thu Oct 18, 2001 5:37 pm ]
Post subject:  Re: 73 carborator troubles????

Quote:
: I have a 73 duster ,and just rebuilt the 1
: barrell holley on the 225 slant 6. It idles
: and pulls decent, but i have the ideling
: screw turned just about all the way in .If i
: back it off it wont run.If anyone can please
: help.


Fuel is "leaking" into the idle circuit. This can be caused by a loose "swedge plug", loose or leaking valve body / gasket or a mis calibrated "economiser valve".
DD

Author:  WhaleMstr [ Sat Oct 20, 2001 12:05 pm ]
Post subject:  Re: 73 carborator troubles????

Doc - could you elaborate a little on this please - or someone else maybe?
Thanks,
Dan

gramma@dm-tech.net

Author:  Doc [ Sun Oct 21, 2001 10:53 am ]
Post subject:  Re: 73 carberator troubles????

Quote:
: Fuel is "leaking" into the idle
: circuit. This can be caused by a loose
: "swedge plug", loose or leaking
: valve body / gasket or a mis calibrated
: "economiser valve".
: DD


Take the float bowl off a Holley and you will see it's "valve body" (really a fuel metering block)and this is where all the fuel is regulated to suppoet the different fuel "circuits". (idle , cruze and power)

These blocks have a bunch of small passageways, check-balls, air bleeds and plugs so any clog, loose part(s), a crack or warp, corrosion or leaking gasket can cause trouble.
1920 metering blocks are fussy things and hard to service, best to "swap-in" a different one then waste a bunch of time troubleshooting / repairing one that is not working correctly.
DD

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