Hello, new to the site and hope y'all can help me. I just purchased a dual range 86 Subaru GL for a price I couldn't turn down. Engine idles like a dream, but once rpm's start rising it starts to stumble upon itself causing it to not go over 30 mph. New fuel pump, fuel filter, previous owner said he rebuilt carb. Any tips or ideas on what might be causing problems? Timing? Read something about needle valve in carb clogged possible cause. Any help would be great thanks.
Mike
1986 Subaru GL
1999 Subaru Impreza
2002 Subaru Outback