Why is there no spark at points?

Why is there no spark at points?

If no spark is visible, check to see if the points or wires are shorting to ground either at the points or at the primary terminal screw going through the housing. Also check where the contact spring connects to the main frame of the points and make sure the insulator is not melted.

What would cause no spark on a motorcycle?

If you are having a no-spark problem, a good place to start after ruling out shorts, grounds, switches and spark plugs, is the ignition coil, spark plug caps and wires. A breakdown in the insulation can cause arcing in the plug wire. You will be able to see the wire spark in low light conditions.

What causes no spark from coil?

Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.

What gives power to the ignition coil?

The battery provides low voltage electricity to the ignition coil. That moves other distributor parts that cause the ignition coil to pulse, and sends the electricity down each spark plug wire in order. The power travels down the spark plug wires to the spark plugs and causes sparks.

How do I know if my ignition coil has power?

Locate the positive or power wire attached to the engine coil. Check for power using a test light. If this wire has no power, then your ignition coil is not receiving current. You should check the wiring from your ignition switch to the coil for breaks in the wire and repair them.

How do you troubleshoot an ignition coil?

The only safe way to test for spark is to use a spark plug tester tool. If a coil problem is suspected, measure the coil’s primary and secondary resistance with an ohmmeter. If either is out of specifications, the coil needs to be replaced. A coil can be easily bench tested with a digital 10 megaohm impedance ohmmeter.

What are signs of ignition problems?

Look out for these common signs of ignition trouble.

• Key won’t turn. If the key won’t turn be sure that the ignition lock is not engaged by turning the steering wheel back-and-forth until it locks.
• Stalling engine.
• Flickering dash lights.
• No sound from starter motor.
• Car does not start.