True it sounds complicated, but less so than fiddling around with settings
that may make things worse or cause additional problems. But the throttle
cable slack is a valid issue and a good one to check.
But I also think the temperature under the hood can vary with weather.
Especially since the SU domes are somewhat distant from hot cylinder head, and
they're in the airstream entering the engine compartment. I can test this, as I
have an external temperature sensor that I can mount in the engine bay. I had it
mounted in my other car to beep when the external temps fell below freezing so
I'd know if the road could ice over, but it has a readout for all temps so I'll
put it in the roadster.
Fred - So.SF
________________________ Reply Separator ________________________
Subject: Re: Re[2]: starting problems solved!
Author: Adam Bradley <ambradley@yahoo.com>
Date: 8/13/2001 1:56 PM
That's pretty complicated since the tempurature under the hood
shouldn't change all that much with the weather once the car's warmed
up (or so I would think).
I suggested the throttle cable slack privately to Hoon, then publicly
to Robert only to discover that someone else had publicly posted that
already. I'd try the easy things first (loosen a single screw, give it
a little slack, tighten the screw again).
--- Fred_Katz@ci.sf.ca.us wrote:
> I'm only guessing here so experimentation is in order. The viscosity
> of oil
> thins out in higher temperatures (summer). So maybe the resistance of
> the
> SU pistons, against rising, is less in summer heat. And when you are
> coming
> to a stop, there may be a tendency for the floats to rise in the fuel
>
> bowls, allowing more fuel to stream into the fuel bowls and this
> temporarily increases the flow of fuel into the carbs. That extra
> fuel may
> be putting some upward pressure on the needles.
>
> Perhaps you need to experiment with thicker viscosity oil in the SU
> dampner
> pots, so you get more resistance to piston rise in the SU carbs.
> Again,
> just a guess. I would still clean up the carb linkage and check the
> throttle shafts & plates for binding.
>
> Fred - So.SF
>
=====
Adam
'70 1600 SPL311-28181
http://www.picturetrail.com/abend
Send instant messages & get email alerts with Yahoo! Messenger.
|