spitfires
[Top] [All Lists]

Re: 1147cc tune-up carb problems

To: "Tim Benner" <tbenner@woh.rr.com>, spitfires@autox.team.net
Subject: Re: 1147cc tune-up carb problems
From: Dave Chu <dave@ece.concordia.ca>
Date: Sun, 27 Jul 2003 14:14:09 -0400
In message <000a01c353e7$48a01f70$0301a8c0@main>you write:
>Hello Listers,
>
>
>When you try to accelerate hard it seems to flat out and gurgle for a while
>before the engine catches up to the throttle.  It has a clear fuel filter
>mounted on the firewall that looks to be flowing well.  I have read a lot of
>disussions about SU carbs and needle sizes, but have not had the nerve to
>start fiddling with mine yet.  (other than topping up the dashpot oil)
>
>My question is, is there a simple way to make the mixture richer so I can
>see if the flatting out is fuel starvation?  Has anyone else had this sort
>of problem?  Should I be looking at something other than the carbs?  I have
>a spare set of HS2s that I will rebuild.  Any sage advice from SU experts
>out there?

Try different type of oil in the dashpot.  On my 78 running dual HS2's I'm
using automatic transmission fluid, but you can try 20W50 or 10W30 motor
oil.  

Dave                                                  |\ |     | |      
_______________________________________/\  /\  /\_____| \|_____| |____________
Dave Chu                                 \/  \/       | /|     | |  
Dept. of Elec. & Comp. Eng.                           |/ |     | |      
Concordia University              Voice:(514)848-3115   Fax:(514)848-2802 
1455 de Maisonneuve W. H961       Email:dave@ece.concordia.ca
Montreal, Quebec, Canada H3G 1M8  http://www.ece.concordia.ca/~dave/addr.html
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

///  spitfires@autox.team.net mailing list
///  or try  http://www.team.net/cgi-bin/majorcool
///  Archives at http://www.team.net/archive


<Prev in Thread] Current Thread [Next in Thread>