|
The distributor cap wears in the same manner as the plugs. As the parts age, the gap between the rotor and the terminals increases and repeated heat cycles crack the cap and cause random misfires. The coil (right) needs to be swapped on the new cap. A quick check of the primary terminals (red and yellow wires) and between the yellow wire and the secondary terminal (the button under the coil) with an ohm meter can determine if the coil is OK. Primary resistance should be low (MSD recommends 0.31 ohm for its in-cap coils), and secondary should be high, 9,000 to 11,000 ohms, but not infinite. View Related Article
|
|