Distibutor-less ignition systems gain been all over for a while just now and, for the most allotment, compass proven to be trustworthy. On the other hand, when they achieve malfunction, it can be hard to troubleshoot them without a logical advance. With a misfire contingency, do troubleshooting with the coils and ignition wires.
Isolating Cylinder Misfire
Isolating which cylinder is misfiring is clashing with the distributor-less ignition development. Thanks to the process uses fritter Glimmer and high-energy coils, it is not desirable to simply remove one plug wire at a future to isolate the cylinder. Doing this Testament, in some cases, dispatch two cylinders and, in other cases, not do in either cylinder. On the late-model coil-on plug setup, a cylinder balance probation can be drop using a announce factor to isolate which cylinder is misfiring.
On the older DIS systems, a short quantity of vacuum tube approximately an inch great can be inserted between the coil Garret and the plug wire. It puts the plug wire lasting Sufficiently to yet conflagration the plug, nevertheless can easily be shorted by touching the vacuum wrinkle with a grounded test light. This will allow you to kill each cylinder and find the one that does not effect idle speed. That cylinder is the misfire.
Further tests will show if the coil is at fault or the ignition wires.
Testing Coil Secondary
Ignition module testing should be done with a circuit tester and not a typical test light. Some ignition triggers are computer controlled and the test light will pull enough current to damage the computer.With the key on, but the engine off, check for a power source on the ignition module terminals. Then, while cranking the engine, check the ground side for the switch from power to ground.
Again, compare your reading with the manufacturer's specs for your specific coil.
If both tests of the coil show it to be in specifications, replace the plug wire.
Testing Ignition Module
Testing the coil secondary is done by connecting an ohm meter between the coil secondary also called the coil tower, and the 12 volt input terminal of the coil. Compare your readings with manufacturer specifications and replace if it tests to be out of range.
Testing Coil Primary
Testing the ignition coil primary is done with an ohm meter connected from the positive terminal to the negative terminal.The circuit tester will flash if the ignition module is triggering the coil.
