mylopolis wrote:Okay, kerthhhhhhhhhunking out of the way, we're back to carbs.
New observations: hesitation is worse when cold.
Tweaking timing has little effect.
Every time I come off high RPM's my central idle is "off". This often equates to dead-stalling at stop signs. Blip throttle (which is hard to do when braking) and it comes back.
Timing will have little effect. Timing is not related to off-throttle behavior.
Worse when cold and no central idling when coming to a stop tells me that you need more central idling airflow and a richer mixture. You mentioned earlier that the central idling circuit behaved poorly when putting the intake hose back on, and that you could not get your idle speed up past 890. Seize the bull by the horns. You have enough foundation here to start considering tweaks. If you cannot get the idle speed up, increase timing from uour current 12*
ATDC towards factory 10*ATDC. If you cannot get the central mixture to richen up, is the float level too low? If you take off the top of the left carb, will you find a cracked emulsion tube? Based on your adjustments thus far:
What is your current warm idling speed?
What is the mixture when on dual carbs only (no retard)?
What is the mixture when central idling is working (retard on)?
What is your current idle timing?
Colin
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