As I continue to refine my carbs, several more question have come up. To
start with, an update from my carb problems from the fall. I have two carbs
that were rebuilt by the RSF plus a complete rebuild of my engine. I am
having a great problem of getting the car to run smoothly at idle. With the
choke out, the car runs pretty smooth and at high RPMs the car is great, but
coming off the throttle, the car dies. I thought the problem concerned the
carbon canister, runon valve, and vaccum. After thoughly checking these,
each of which proved to work correctly I started looking at the rebuilt
carbs. The problem really occured when the vent line to the left side of the
carbs was connected. Using Nelson Riedel Carb Overhaul paper and Haynes
manual I think I have narrowed the problem to the vent lever with the locking
screw on the left side of each carb. Nelson talk about the vent lever
adjusted to be vertical. In my research on the carbs, there are no
references, other than Nelsons', to how this is set nor what exactly what it
does. As I play with the setting, it seems that whenever I move the lever
more to the right, depressing the little plunger, that is when the car will
die when the car is at idle. By moving the plunger, via the set screw to the
left, the car runs well. Am I defeating the vent lever purposes by moving it
so far to the left? Do I have another problem with this vent lever?
My second area that concerns me is the bypass valve and adusting it. I have
the bypass valves that are not connected to the distributor with a vaccuum
line and has the external adjustment screw. The literature I have read talk
about adjusting the valve. It says to disconnect the vacuum retard line to
the distributor and plug the line. This is the line that runs from the base
of the carb to the distributor and speeds up the RPM by 500 rpm or so. By
adjusting the bypass valve to get it to "float", you should be able to get
the rpm to increase, but I can't. Has anybody mess with these valves and
have any other suggestions???
Thanks in advance for any help.
Harry Mague
Beavercreek, OH
74 TR6
CF16623
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