Testing ignition Coils off car

Coil Specifications

Coil#1 No----C6R500/12V--------      Coil#2 No-----CIT-118/12V---

Coil#1 Voltage----12v-------------      Coil#2 Voltage----12v----------

Coil#1 Primary------1.7ohm------      Coil#2 Primary----1.6ohm-----

Coil#1 Secondary---14.73ohm --       Coil#2 Secondary---O.L-------

Coil number 2

 (most important when using the 0-200ohm scale)

Coil Test Results

Coil# 1 Primary--3.4ohms

Coil# 1 Secondary---9.2ohms

Coil# 1 Earth leakage OL

Coil# 2 primary 1.9 ohms

Coil# 2 Secondary--9.2ohms

Coil# 2 Earth Leakage test...OL

Both coils are OK, Not Serviceable!

Wasted Spark Coil Pack

Coil# 1 Secondary 9.38kohms

Coil# 2 Secondary 7.23kohms

Coil# 3 Secondary 7.22kohms

Coil# 1 Primary  0.1ohms

Coil# 2 Primary  0.6ohms

Coil# 3 Primary  1.1ohms

Testing Ballast resistors

1 Obtain 2 ballast resistors with different part numbers

2. List part numbers and resistance specification(s)

3. Measure the resistance of the resistors

Specifications

Ballast resistor NO1      BR1                 Ballast resistor NO2   BR2

Ballast resistor NO1 ohm spec 0.9-1.1ohm        Ballast resistor NO2 ohm spec 0.5-0.7ohm

Meassured Resistance Values

Ballast resistor NO1 measured ohms 4.1 ohms        serviceble? NO

Ballast resistor NO2 meassured ohms 2.3ohms       serviceble? NO

Measuring Current Draw and Voltage Drop

Current draw 3.422Amps

Coil calculated Voltage Drop 4.5V

Coil measured Voltage Drop 3.84V

Coil resistor calculated voltage drop 5.43v

Coil resistor measured voltage drop 6.24v

Did your calculated values equal your measured results explain why or why not?

Voltage drop are equal with my measured results

Calculated value:

Ballast resistance 1.9ohm

Coil resistance 1.3ohm

Coil voltage drop 4.14A 1.3ohm= 5.4v

Ballast resistor voltage drop 3.14A 1.9ohm=5.98v