Re: 89 GXT gas goes from nothing to all
I'd start by checking the throttle body on the carb to make sure it opens and closes smoothly. It should have a linkage going from the governor to the throttle, if this is adjusted incorrectly it can hold the throttle open.
Also, if the oil injection has been removed and the hole on the intake tube after the carb is not plugged, it will cause issues.
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