mgs
[Top] [All Lists]

Re: [Mgs] Carburetors

To: "Douglas McKinnie" <d.mckinnie@usa.net>
Subject: Re: [Mgs] Carburetors
From: Paul Root <ptrmgb@gmail.com>
Date: Tue, 11 Jan 2011 02:46:20 -0600
I'd go through a tuning of the carbs as normal.

A couple things to look for. The first, and easiest, is oil in the dashpots.
To me it sounds like they are opening too wide.

The second is air leaks. Throttle shaft ends, and connection to the manifold.


On Jan 10, 2011, at 9:36 PM, Douglas McKinnie wrote:

> Of the twin SU variety.
> I haven't had much occasion in recent years to take this car on the
> interstate
> highway. At first this morning all was fine, but then I noticed in the East
> TN
> long uphill stretches that the more I pressed the accelerator pedal the
> slower
> I seemed to go. At times I could only maintain a speed of about 50 MPH,
which
> as it turned out was fine because I was pacing the large trucks that were
no
> faster. If I let off the pedal a bit, that seemed to give the engine a bit
> more energy, but not enough to increase the speed at all.
>
> Eventually I discovered that if I let up the pedal fully and then pushed
down
> again I would get the full power that I was used to, but it would
eventually
> bog down again. By pulsing the pedal off every so often I was able to keep
up
> with any traffic I wanted to keep up with, even on the long steep uphills.
>
> This made the last 200 miles of my journey tolerable, but obviously this is
> something I want to fix. And I suspect that some of you who have a better
> understanding of the mechanics of the fuel system than I do might know
> offhand
> what would cause this sort of behavior.
>
> Douglas
> '70 MGB-GT
> _______________________________________________
>
> Mgs@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe: http://autox.team.net/mailman/options/mgs/ptrmgb@gmail.com
_______________________________________________

Mgs@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation  $12.75
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums

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