At 08:35 PM 7/17/95 EST, Robert J. Donahue wrote:
>First, thanks for the advice on the leaking gas. Thightening the jet gland nuts
>stopped both carbs from leaking. By the way, does centering the jets drive
>anybody else crazy?
>
There's a little aluminium plug in the SU tool kit which should help
with that chore.
>Now I am trying to tune them. I can't seem to get the mixture right. Even
>with the jet adjusting nuts all the way up, the mixture is too rich. The
>exhaust is black, the plugs are fouling and the Colortune plug glows
>yellow. The needle is ES which is supposed to be right for the H2s in the TD.
>The carbs were just rebuilt with the MOSS rebuild kit. I have the air
>cleaner off, so it can't be an air restriction. I would think any air leaks
>would only make the mixture leaner. The carb pistons move freely. Everything
>is stock
>TD as far as I know.
>
>I am stumped again. Any ideas?
>
You didn't mention the float level. Have you checked it? There is a
spec for the clearance between the float and the fuel bowl lid. This seems
to be an approximation of the correct level, at best. I've had a couple of
carb sets where this was too high a fuel level.
Remove the pistons, then turn on the ignition (I'm assimng an electric
fuel pump crank if mechanical). The gas level should be ~1/16" below the
top of the jets. If not, adjust the bendy arm on the float or shim the
needle valve as appropriate.
----
David Ambrose, Proxima Corporation ambrose@prxm.com
Play it cool, play it cool, 50-50 fire and ice.
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