Checking spark plugs (contact ignition) (VAZ-21061)

When one of the spark plugs does not work, the engine vibrates strongly at idle – "troit".



With the engine idling, disconnect the high-voltage wires from the spark plugs one by one.

This should be done with a rubber glove or by wrapping the wire (in several layers) with a dry rag. When removing the wires from the working spark plugs, the engine loses speed or even stalls.

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