> After four months on jackstands, my TR3A is back on the road and running
> great. Only thing is, I cannot set the idle below 1,500 rpm.
> The timing,
> points, valves and plugs have been set, and I've attempted my first-ever
> tuning of the carburetor. Other than two verrrry slightly bent needles
> (which are not currently sticking), everything looks good, save
> for the plugs
> indicate it is running somewhat on the rich side. I have the idle screws
> completely backed out for each carb, but I can't get the revs
> down. It seems
> to run smooth and strong. Any suggestions?
Where is your timing set ?
Assuming it's no more than about 6 BTDC, I'd probably start by disconnecting
the linkage to the front carb, to be sure it's not holding things open; and
the linkage between the carbs. Check that the idle levers, and the fast
idle lever, are not touching anything. Then try applying a little extra
closing force to each carb to see if that brings it down. If so, your
throttle bushings may be badly worn. Then I'd start looking for the vacuum
leak.
If all else fails, pull the carbs and check the throttle plate centering.
It should close snugly on both the top and bottom, the only 'daylight'
should be near the shaft.
Randall
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