I think it may be the throttle cable binding as after I loosened the
throttle cable as recommended the problem ended.
Mike
----- Original Message -----
From: Kyle Hagemann <kwhcpa@addler.net>
To: Nathen Ruffcorn <nruffcorn@prodigy.net>;
<datsun-roadsters@autox.team.net>
Sent: Monday, October 02, 2000 11:29 AM
Subject: Re: Check those brakes!!
> From: "Nathen Ruffcorn" <nruffcorn@prodigy.net>
> snip
> > P.S. Anyone have any thoughts as to why my idle jumped from 800 RPM to
2000
> > RPM for about 30 seconds after the hard stop and then returned to
normal???
> > (not that I plan to make the tire screaching stops a habit <g>)
>
> Hi Nathan-
>
> Contrary to list wisdom, I doubt the car's heart was racing or adrenaline
> was pumping. Unless you have some pretty slick cyborgean aftermarket add
> ons, that is;-P
>
> I've experienced the same thing you describe; can't say for certain what
> it is, but I'd guess the inertia of stopping so quickly goofs up
something.
> (duh, going out on a limb there, huh?:-)
>
> It'd have to be either the SU pistons or the floats. The floats seem like
> the most likely culprit, but I don't quite understand how that could be;
> maybe- the floats sink from the force, allowing fuel pump pressure
> to effectively pressurize the fuel nozzle?
>
> Or the pistons - which are under a variety of forces - gravity, spring,
> vacuum. Seems that stopping rapidly could goof up the sensitive balance,
> allowing the carb pistons to rise, feeding the beast more fuel, which
> raises engine vac, etc.?
>
> Kyle
> '69 2000, iffy brakes, worse engine
>
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