Correction of ignition timing angle (VAZ-2105)

When operating a vehicle, depending on the quality of the fuel being filled, it may sometimes be necessary to adjust the ignition timing. The ignition timing is adjusted by the octane corrector 3 (Fig. 30) of the ignition distributor, which allows the ignition timing to be reduced or increased. "+" signs (advance) and "-" (lag), the marks on the octane corrector scale indicate the direction of its rotation.



Adjust the ignition timing on a warm engine. Before adjusting, mark the position of the middle line of the octane corrector on the cylinder block. When driving on a level road in direct gear at a speed of 50 km/h, sharply press the accelerator pedal. If this causes minor and short-term detonation, then the ignition timing is set correctly. If there is strong detonation (early ignition) loosen nut 1 and turn housing 2 0.5-1 division clockwise (by In the absence of detonation (late ignition) turn body 2 0.5-1 division counterclockwise (to "+").

After adjustment, tighten nut 1 and check again for correct ignition timing while driving.

The article is taken from the website VAZBOOK.ru