Listers:
With your help, I would like to revisit my driveability problems on my '76.
The car has high compression, cams, and headers. It tends to foul the plugs
very quickly, especially #s 1-3. Then it misfires, until I clean or replace
the plugs.
The carbs are Zenith-Stromberg CD2 models. I have both the Haynes repair
manual and the Haynes carburetor manual. The latter is a little confusing, as
it lists a myriad of Z-S models, but not mine. However, the middle Z-S
section shows a carburetor similar to mine with a white damper cap and no
adjustable jet assembly at the bottom.
I synchronized the carbs using the rubber hose method and the idle screws.
It now idles about 900 rpm and the hiss is similar at both carbs.
The book refers to Z-S models similar to mine with adjustable jets,
adjustable needles, or neither. Which applies to my model? Also, most of the
text
refers to adjusting the mixture by inserting a special tool into the air
valve, locking the base, and turning an allen key in one direction or the
other.
I have ordered that tool from TRF. Does that procedure apply to a CD2?
Finally, I am confused about whether my mixture is off. The plugs soot up
very rapidly, but I did the procedure with lifting the air valve and letting
it fall back down. In both cases, this led to a slight decrease in revs, then
a resumption of normal running. That isn't the response I expected with an
over-rich mixture. But the plugs seem to be the most reliable sign. Also,
the exhaust pipe ends look sooty to me. The dashpots are both full.
I'm trying to do my part by reading the manuals carefully and following
procedures before leaning on you guys, but this is my first carbureted car
since
the '70s and I could sure use a little sage advice.
Thanks.
Michael
'76 Tahiti blue
CF 57044U
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