GSLSEforme |
11-17-17 06:40 AM |
Car run before,or sitting for awhile? Since off idle performance is ok,focus on idle circuit. two things can cause your symptoms...vacuum leak or plugged idle circuit. Carb is running on mains at 1200+rpm. With a can of carb cleaner,car "idling", spritz around base of carb paying close attention to throttle shafts-worn shafts/throttle plates are a pattern problem with these carbs. NPF? Look into idle circuit,pay special attention to metering block behind front float bowl. Disassemble carb and match all gaskets to their respective parts. Suggest putting carb body and all disassembled pieces into carb cleaner solvent for the most thorough cleaning followed by rinsing and spraying all passages with carb cleaner and then compressed air. Use NEW gaskets to reassemble,float levels are correct just at bottom of inspection window and initial idle mixture screw setting to get running is 1-1.5 turns out from lightly seated. Would also replace power valve or install a power valve blockoff. Each power valve has a marking on it to designate operation with specific " of vacuum. Post back findings.
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