My 1989 Formula Convertible is sick. The car has a 305 TPI, a 5-speed and dual cats. It starts fine, but usually idles a bit rough. It also feels a weak, has a stumble at steady throttle and spits black soot out of its tailpipe. The car is essentially stock and has 62,000 miles on it. It obviously sits more than I drive it. Have my injectors gotten old? Any help would be greatly appreciated.

 

You need to introduce yourself to Dyno Don. He has a shop by the Pond.

 

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