[Healeys] 67, BJ8 Acceleration problems

[Robert Blair]

Pieter, One easy check ...

Carb piston(s) may be sticking in the bell housing.  Make sure that when the
pistons are pushed up to the top of their range by finger and let go, they
fall quickley to the carb body base with a hard bump sound when released.  If
they dont fall quickley and with a bump sound they are not fully free in the
chamber there will be fluffy engine response when accelarating as friction is
interefering with the vacuum.  If the dash pots have been off recently, then
it is easy to not align them accurately with screwing them back on - the
pistons must be fully free to slide under down gravity.

Robert N. Blair  Yellow 65BJ8  rnbmail at yahoo.com
   



--- On Thu, 11/5/09, Pieter and Linda <pieters at pt.lu> wrote:

> From: Pieter and Linda <pieters at pt.lu>
> Subject: Re: [Healeys] 67, BJ8 Acceleration problems
> To: buhler at memphisassociates.com
> Cc: healeys at autox.team.net
> Date: Thursday, November 5, 2009, 10:37 AM
> Faulty or leaking vacuum advance?
> Pieter
> On 05/11/2009, at 6:31 PM, Jon Buhler wrote:
>
> > Fellows, this may have been addressed many times, but
> I have just experienced
> > the problem.  Under acceleration, the engine
> bucks and coughs but runs fine
> > once up to speed.
> > Plugs are clean, dashpot oil OK, PerTronix ignition
> system,
> > engine warmed up and jets adjusted according to
> specs.  Sure would appreciate
> > your thoughts.
> >
> > Jon
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