Diagnostic Tools
- The CCC system does not require special tools for diagnosis. A dwell meter, tachometer, test light, ohmmeter, digital voltmeter with 10 megohms impedance (minimum), vacuum pump, vacuum gauge and 6 jumper wires 6" long (1 wire with female connectors at both ends; 1 wire with male connectors at both ends; 4 wires with male and female connectors at opposite ends) are only tools necessary for diagnosis.
- A test light, rather than a voltmeter, must be used when indicated by diagnostic chart.
- A dwell meter is used to measure the time that mixture control solenoid is on or off. This gives an indication of how the system is working and how rich or lean the mixture is. The dwell meter is set for 6-cylinder scale on ALL engines, regardless of how many cylinders the engine has.
- Dwell meter is connected to Green connector located near the carburetor. This connector will not be connected to any circuit EXCEPT when you are testing with the dwell meter. Do not allow terminal wire to come in contact with any ground source, including rubber hoses.NOTE: If engine operation seems to change when dwell meter is connected to Green wire, remove dwell meter and use another type. A few brands are not compatible with CCC system.
- When engine is at operating temperature and idling, dwell meter needle will move up and down on scale, between 10-50°. This indicates "Closed Loop" operation. If the needle does not move, "Open Loop" operation is indicated.