Quote Originally Posted by Can1991Ram View Post
Do they make smaller jets for this carb or does it use metering rod? Can you braze the jet and drill a smaller hole?
I know on my 86(years ago).. i swapped a carb from a 1978 arrow and it fixed a ton of driveabilty issues.
The carbs built pre-80's engine were the last of the leaded fuel, derestricted carbs that were aimed at making power. In this case that BJH is experiencing, the factory jets aren't the problem. There's an underlying problem that is causing it to run rich. Winding in the air idle circuit needle 'may' affect the mixture at idle but not across the whole rev range (start the engine, wind it in until the needle either seats or the engine conks out, then back it out 1/2 a turn at a time. Should be 1-1/2 to 1-3/4 turns max) This won't fix the problem if there's a vac leak somewhere, the O2 sensor is dead or the EGR valve is coked up.