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F1DriverQuidenBerg
Jan 19, 2014

Powershift posted:

My first suspect for the rough idle would be a bad 40 year old vacuum line. visual inspection, spray carb cleaner around the engine bay and listen for an idle surge. it could also be the reason it doesn't run well without the choke.

This. Target any pinches in the vacuum lines and the connection ends then move on from there. What's the rough idle like? does it surge? does it idle high? does it stall out?

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F1DriverQuidenBerg
Jan 19, 2014

Carb rebuild would be my starting point. I'm willing to bet those screws are just the starting point of PO messing with the carb.

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