If the engine does not start, faults should be systematically eliminated. To start the engine, two basic prerequisites must always be met in gasoline engines: the air-fuel mixture must enter the cylinders, and the ignition spark must penetrate the spark plug electrodes. Therefore, the fuel supply should always be checked first.
To check for spark, remove the spark plug, insert it into the spark plug connector, and connect the spark plug body to ground. In this case, you can not hold the ignition connector or the ignition cable in your hand - use pliers with insulation. Have an assistant start the engine. In order to avoid damage to the catalyst, gasoline can not be injected. Therefore, disconnect the electrical connectors from the fuel injectors. If the ignition spark does not jump, look for malfunctions in the ignition system.
Fault: Engine starts with difficulty or does not start at all.
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