Re: Re: Spica microswitch adjustment?

[Kevin Trent <trentkc@domain.elided>]

Caxambu:

Thanks for your response.  You confirm one of my suspicions - that the TA 
could be playing a role.  I had noticed that, as mentioned, when the engine 
was thoroughly warm, the responsiveness of the system improved.  I'll check 
the pump gap, both cold and hot and let you know.

//kct

At 12:57 PM 12/27/01 -0500, you wrote:
>Date: Thu, 27 Dec 2001 06:25:09 EST
>From: Caxambu@domain.elided
>Subject: Re: Spica microswitch adjustment?
>
>In a message dated 12/26/01 8:23:49 PM Pacific Standard Time, Kevin Trent
><trentkc@domain.elided> writes:
>
> >>>>>>>>>>snip
> >  The solenoid tests fine.
> >
> >  Question:  Is the microswitch failing or just in need of adjustment?  If
>it
> >  is the adjustment, does the plunger gap need to be closer or wider?  Or
> >  should I just replace the microswitch?  Have any digesters gone through a
> >  spica  microswitch adjustment (or replacement) that can shed their
> >  experience on the topic?
> >  <<<<<<<<<<<<<<snip
>
>I once had a situation that seemed like a bad microswitch-- the solenoid
>could never seem to close off the fuel upon decel. I was ready to tear into
>it to replace the switch. Took it to Wes. (My good luck is that his shop is
>nearby. Your good luck is TWO Alfas!) Turned out to be a failing Thermostatic
>Actuator. In colder weather it didn't have quite enough strength to actuate
>sufficiently which caused a richer mixture and slightly higher idle, even
>after the engine reached operating temp. This overpowered the effect of the
>microswitch/solenoid.
>I realize this is not an exact match of your situation, but it is worth
>looking at the T.A. Specifically, make sure it provides the correct pump gap
>(measured at the reference screw) when at operating temp. This you can do
>with the pump still on the car.
>
>- --Caxambu
>1969 Spider Veloce 1750
>Seattle WA
>
>-

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