Thread: misfire update
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Old 06-09-2022, 11:54 PM   #2
KULTULZ
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Post Re: misfire update

Quote:
I got out my vacuum tester and connected it to the manifold tubing. The vacuum was still very low, so I fiddled with the carburator idle/fuel mixture screws on the carb and got it up to 19 inches, but there is still that surge in idle.

I disconnected the vacuum advance from the carb and plugged the tubing from the carb and connected my timing light and adjusted the timing to about 8 degrees BTDC then reconnected the vacuum advance tubing.
When you removed the DIST signal, did you monitor the vacuum reading? Did it remain steady? You need to monitor the vacuum reading at correct curb idle and initial timing and then remove any vacuum signals one by one (DIST-WIPERS-BOOSTER) and watch the gauge for a while. Write the reading(s) down for reference.

What engine/carb/trans setup do you have?
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