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rough idle after tune up 200 1977

Greetings all-

Tuned up my 77 240 w/B21F yesterday, and it ran very well. Last night my wife took it for a cruise, and it started to run rough, really rough since then. I properly gapped the plugs and replaced them, changed rotor and dist. cap, and timed it. Today I double checked to insure that there was spark going to all cylinders and the timing was still good; and it was. Although I don't think it is related, I changed the thermostat today and cleaned the flame trap. The only thing I did yesterday was to fill the car with gas, I think it was 92 octane. I don't know what else I could have missed. Any advice would be greatly appreciated.

--Joe







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