Possible Cause & Correction

Check the following items:

• Ensure driver is using proper starting procedure.
• Visually check vacuum hoses for splits, kinks and proper connections, as shown on Vehicle Emission Control Information label. Check ignition wires for cracking, hardness and proper connections at both distributor cap and spark plugs.
• Check for air leaks at carburetor mounting and intake manifold.
• Check wires for pinches, cuts, and proper connections.
• Check choke valve, throttle and fast idle cam for sticking. Replace any malfunctioning parts. If caused by foreign material and gum, clean with non-oil base solvent.
• Check choke and vacuum break operation adjustment.
• Check EGR valve system for faulty operation that could cause valve to stick open.
• Check float level using external float gauge. Adjust float to specification, if required.
• Check carburetor fuel inlet filter. Replace if required.
• Check ignition system.
• Check distributor for worn shaft, bare and shorted wires, pick-up coil resistance and connections, loose ignition coil ground, and moisture in distributor cap.
• Remove spark plugs and check for wet plugs, wear, improper gap, burned electrodes or heavy deposits. Clean or replace as necessary.
• Check ignition timing and adjust if necessary.
• Check fuel pump pressure, volume and vacuum