The cable does not shrink it expands. But the cable housing expands
more, so the cable gets tighter and the idle speeds up. The housing is a
spiral wound flat steel strap, that if straightened out, would be very
long indeed (maybe 10 feet or more). Because of that mass, the outcome
of the coefficient of expansion is greater than the cable (it changes
more in length that the cable will per each degree change).
Your cable should have slack, but it should be short enough to open the
throttles completely.
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net] On Behalf Of Mark
(Stickerman) Dent
Sent: Tuesday, July 18, 2006 4:41 AM
To: Brian Reynolds; datsun-roadsters@autox.team.net
Subject: Re: sticking throttle
If it only happens when warm the problem is usually not enough slack in
the
cable. If the cable is set too tight, when it gets warm it shrinks just
enough to cause what you describe.
Mark
Phoenix Maryland
64 1500 {Bone Stock} 67 1600 {Sleeper}
www.datsunroadsters.com
----- Original Message -----
Subject: sticking throttle
> My '69 2000 with SU carbs has a sticky throttle. It drives normally,
> but when I come to a stop it's often stuck at around 2000 rpm. If I
> lift the gas pedal with my foot it returns to normal idle range. It
> seems to happen when the engine is warmed up.
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