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Re: MG Midget '74 running too rich

To: MG List <mgs@autox.team.net>
Subject: Re: MG Midget '74 running too rich
From: Max Heim <mvheim@studiolimage.com>
Date: Tue, 06 Apr 2004 13:49:56 -0700
So, what's the choke situation on a 74 Midget? Does it have a manual choke?

on 4/6/04 12:58 PM, Tim Holt at holtt@nacse.org wrote:

> So my MG has been running way too rich lately.  It seems to be something
> that just "started" once upon a time.  Symptoms and notes include...
> 
>  - Plugs get fouled (sooty & some are wet).  A new set of plugs lasts
> about 60-80 miles before it starts to run rough
>  - Some signs of gas coming out of the SU carb fuel reservoir closest
> to the pump.  Nothing out of the overflow, but a sort of glaze on the
> outside of the can like it came out around the gasket just a bit
>  - I took off both reservoir tops and checked floats.  Didn't appear
> to be flooded.  Little valves that float pushes on look clean, solid, etc.
>  - Can blow in fuel tube and manually lift float and air flow stops
>  - Dash pots topped off as should be
>  - Carefully removed top of carbs and looked at needles.  Clean and
> straight as far as I could tell.
>  - Runs great with a new set of plugs in.  First signs of problem is
> that it starts to blow some grayish smoke and run rough like it's missing.
> 
> So basically it looks like too much fuel - which is why I checked the
> floats right off.  But they seem to look fine!  Fuel pump is fairly new
> - it's an SU solid state fuel pump (from Moss).
>  
> Any suggestions or thoughts here?  I can keep it running by replacing
> the plugs every once in a while.  Given the price of gas it's relatively
> cheap to do, but it does get a bit old.


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires





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