[Amc-list] (no subject)

[farna@xxxxxxx]

I used a pair of Carter YFs on mine. As Tom mentioned, take one carb out of the picture then adjust for a smooth idle. Once you have that going, switch carbs. With the linkage disconnected you shouldn't have to do anything to the disconnected carb, just prop the butterfly closed with the disconnected linkage. I'd adjust the chokes (if automatic) completely open. Once you get each one idling, you might want to back off the idle screw about 1/4 turn on each (or screw in -- which ever reduces mixture on the 1909, I forget!). This should narrow any problems down to one of the carbs. 

I'm assuming they were both rebuilt, and you know for sure the jets are the same in each? If one has a smaller jet than the other you could burn a piston -- I know that from experience!! A vacuum leak on one could cause one to run leaner than the other, with the same eventual results.

Once you have them idling okay, you'll need to get the chokes set about the same. You can't really go by the marks -- the springs age differently. If they are a bit off from each other it won't hurt. Set then physically look at the butterflies when the temp drops and adjust again. Will take a while to get them synchronized, but that won't affect driving once warmed up. 


---------------
Date: Tue, 15 May 2007 20:33:23 -0400
From: "M Walter" <redamc1963@xxxxxxxxxxx>

Hello, I have just installed dual holley 1909 carbs with #57 main jets on my 
1963 american. Its a quality fabrication, but I cannot get it to run or idle 
well.  Before I scrap the whole setup, I would like to see if there any 
ideas out there that could help me straighten this out.  THANK YOU once 
again,  M.Walter  

--
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)
_______________________________________________
Amc-list mailing list
Amc-list@xxxxxxxxxxxx
http://www.amc-list.com/mailman/listinfo/amc-list