I had both problems when I first installed the Weber. I used the return
spring from the Zenith and it worked fine for pulling back to idle but the
performance was about the same as the ZS... until the second barrel opened
up.
All I had to do was screw the accelerator pedal floor stop all the way into
the pedal which gave me an extra inch of throttle play. This was more than
enough to open up the 2nd barrel.
Gene
Birmingham
(Alabama)
> I took out the pushy throttle return spring from my old Stromberg, and
> just put it around the throttle cable between the mounting plate & the
> rotator thingy.
>
> Didn't even start the engine, just held down the pedal to the maximum, and
> it only comes close to activating the 2nd stage barrel, but does not.
>
> Tried tightening up the cable in hopes of getting rid of the slack, but no
> go. The first degree or 2 of pusing down on the gas just tauts the spring
> + cable.
>
> Back to the drawing board. Looks like I will have to find an anchor point
> front of the carb & use a spring. I wanted to avoid that since it looked
> Rube Goldberg-like. Thankfully I bought some springs for dirt cheap at
> Axman, and I think I even found a replacement light for the
> tachometer(with the crown-shaped thing) should I ever need to replacement,
> AND resistors to experiment on the tach with.
>
> Ultimately I want to engineer my own throttle plate(not in the carb, but
> the thing the cable end ties to) + mounting, since IMO it is badly
> engineered. Something with a shorter throw so I can get full throttle
> range + nice 90 degree angle to the l-shaped plate + circular surface for
> an even pull + mounting hole for return spring.
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