[Healeys] High speed miss - CARBS?

[David Porter]

Check that the needles in the carb rebuild are the correct taper, if all
else fails.
dave

frogeye at porterscustom.com

Porter Customs   2909 Arno NE
Albuquerque, NM USA 87107
505-352-1378
Porter Custom Bicycles

1970 MG Midget

 

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-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of Alan Seigrist
Sent: Monday, August 26, 2013 7:58 PM
To: john spaur
Cc: healeys at autox.team.net
Subject: Re: [Healeys] High speed miss - CARBS?

Take the main fuel line off the carb and start the ignition, letting fuel
dump into a big jar.  If it is pumping out in a slow stream, then probably
something is wrong with your pump.  Also check in the jar for dirt/rust.
 Also possible that something is clogging the inlet pickup inside the
tank....

On Tuesday, August 27, 2013, john spaur wrote:

> I still have a misfire at high speeds and at low speeds when I accelerate.
>
> The timing seems to be set correctly and the fuel tank, pump, lines,
> filter, needle seats and float chambers are clean. The plugs and points
are
> gapped correctly.
>
> The carbs were rebuilt but I don't believe the piston/suction chambers are
> to factory specifications. The carbs are original and I am wondering if
> that is why I am getting the misfire (it is not a back fire through the
> exhaust).
>
> Has anyone had similar symptoms that were cured only by replacing the
> carburetors with new ones?
>
> TIA
>
> John Spaur
> '62 BT7
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