In order to determine if there is a spark, you need to pull the plug from the spark plug, unscrew the spark plug, insert it back into the plug and press it against «mass». In this case, the plug and high-voltage wire must not be held by hand, but by a well-insulated clamp. The assistant should scroll the engine with a starter.
Caution: To prevent catalytic converter damage, gasoline must not be injected into the fuel system. To do this, pull out the fuel pump relay.
Warning! Observe the safety regulations when working with the electronic ignition system.
On a diesel engine, check the pre-heating system and the fuel system.
Fault: the engine does not start or starts poorly.