https://youtu.be/uMDQiLkmBbk?si=p_DM8_g3vVYvl4Ss

CHECKING IDLE STOP SOLENOID

• Turn on ignition, but do not start engine
• Open throttle to allow solenoid plunger to extend
• Hold throttle lever wide open, feel end of plunger and disconnect wire at solenoid
• Plunger should move. Some spring tension should be felt.
• If plunger did not move, back out 1/8 hex screw (counter-clockwise) one full turn and repeat previous steps
• If plunger moves, connect wire to solenoid and adjust idle speed
• If plunger did not move when hex screw is backed out, insert test lamp between solenoid feed wire and ground
• If lamp lights, replace solenoid
• If lamp does not light, locate cause of open circuit in solenoid feed wire

ADJUSTMENTS

IDLE MIXTURE SCREW ADJUSTMENT

Your engine should be at operating temperature. Adjust the idle to manufactures specifications for your particular vehicle. Be sure your choke valve is all the way open and the fast idle cam is at the lowest spot. On the Monojets that use the electronic solenoid, disconnect the solenoid, then adjust the idle using the solenoid.Turn the idle mixture screw out about 1/2 turn, then start turning it in 1/4 turn at a time, wait a second so the engine can catch up. Do this until the engine rpm starts to drop. Turn the screw back out (counter clockwise) 1/4 of a turn. Another way to adjust the idle mixture is to attach a vacuum gauge to the intake manifold, using one of the vacuum ports (use one off of the carburetor throttle body). Same idea here. Turn the idle mixture screw in until the vacuum starts to drop, then turn it back out to get the best steady vacuum reading. If the rpm doesn't change then you have a problem. The carburetor is either dirty and needs cleaning, or you might have a vacuum leak. Most likely it is dirty assuming it wasn't recently cleaned.

COMBINATION EMMISION CONTROL VALVE