Attention! The ignition system generates very high voltage, therefore, when performing work, electrical safety rules must be observed.
1. If the engine does not start, and the starter turns the crankshaft, then disconnect the high-voltage wires from the spark plugs and connect a calibrated spark gap to them, or disconnect the wire from one of the spark plugs, move the insulating tip and fix the wire at a distance of about 6 mm from the exposed ground area.
2. Turn the crankshaft with the starter and watch the spark gap or spark plug wire. An intense blue spark should appear.
3. If there is a spark, the required voltage is supplied to the spark plugs (check the rest of the wires to make sure the distributor cap and rotor are working properly). Remove the spark plugs and check.
4. If there is no spark or spark formation is unstable, remove the distributor cap and check the condition of the cap and rotor. If moisture is detected, wipe the cap and rotor dry, reinstall the cap and repeat the check.
5. If there is still no spark, disconnect the high-voltage wire of the ignition coil from the distributor cap and connect the wire to a test spark gap or fix the coil wire at a distance of about 6 mm from the ground.
6. If a spark appears, the cause may be a faulty distributor cap, rotor or wires.
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7. If there is no spark, check all the wiring to the ignition coil primary circuit, make sure the connections are clean and secure. Check if voltage is supplied to the coil from the ignition switch. Check the ignition coil (see subsection 3.4.5) and the distributor inductive sensor (see subsection 3.4.8). Make any necessary repairs and repeat the test.
8. If there is still no spark, replace the wire connecting the ignition coil and the distributor cap (check the resistance of the wire and compare it with the standard). If replacing the wire with a known good one does not give results, then the electronic ignition unit is faulty.
9. Check if voltage is supplied from the battery to the electronic unit when the ignition is turned on. If there is no voltage, replace the electronic unit.