76 liquifire rev problem

[400brian]

Have you got the fuel situation taken care of? Are the slides shut at idle? you should be able to hear them go "clunk" when you close the throttle.
To me, if you are getting uncontrolled rpms with the slides fully shut ( adjust the idle screws out ) then the engine is getting air somewhere else. Most likely around the crankshaft seals. But you could have a serious leak somewhere else I suppose.
If that is the case, it needs to be fixed, or piston melting will come next.

[harleysportster]

Did you follow these instructions I stated earlier:
Looking from the rear of the carb to the rubber mounting, there is a thumb screw with a slot in it for a screwdriver, which is the idle adjuster on the left side of the carb.
-Loosen the cables on both carbs at the top adjuster
-Loosen the idle adjuster and seat the throttle slide in the bottom of the carb
-Turn in the adjuster until a slight resistance is felt while placing a finger on the slide as the adjuster is turned.
-Turn the adjuster another 4 turns
-Set both carbs in the same manner
-hold the throttle lever against the handlebar with a rubber band or tape
-look inside the rear of both carbs and adjust the cables so the front bottom edge of the slide is flush with the top portion of the slide bore of the carb
-Set both carbs the same way.
-Remove rubber band or tape and <big><big><big>look inside the rear of carb to see if throttle slides close to idle adjuster</big></big></big><big><big>The carbs are synchronized fairly close at this point but the idle speed could be off. Adjust both idle screws together to set idle</big>