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Re: How to best clean twin SU carbs?

To: MG List <mgs@autox.team.net>
Subject: Re: How to best clean twin SU carbs?
From: Max Heim <mvheim@studiolimage.com>
Date: Fri, 19 Sep 2003 11:45:06 -0700
I should have specified I was describing HS carbs....

on 9/19/03 8:45 AM, Tab Julius at tab@penworks.com wrote:

> My '78B has twin SU carbs; I've been having intermittent (but always at
> inconvenient times) power problems; it more often than not happens on the
> highway when it's being given some gas.  It falters, and slows, and will go
> like that for a few minutes, then will magically recover and be fine
> again.  It seems to be a fuel delivery problem.
> 
> I replaced the fuel filter; it originally seemed to make a difference on a
> quick test drive (about 10 miles @ 80 mph, no problem) except it faltered
> at the end.
> 
> I then used GumOut, and the car liked the octane boost, but it wasn't long
> before it was faltering again.
> 
> Now I'm looking at the carbs; I've no experience cleaning these (they've
> been on the car about 2 summer's worth).  I unscrewed the top "bowl" or
> whatever it's called, on one of them, but it looked spotless inside.  If I
> was to clean "gunk" out of the carbs, is this where it would
> accumulate?  If so, I'll check the other one (I only wanted to fool with
> one at a time).  I don't want to screw up the carb settings, so how can I
> safely clean them (or make sure they're not gunked) without screwing up the
> tuning?
> 
> I can find articles on tuning them, but not on cleaning them...  any
> suggestions?
> 
> Thanks
> 
> - Tab




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