ef5af8e6 Spark plugs

The correct work of spark plugs is very important for effective operation of the engine.


1. Turn off fixing screws and remove a casing from a cover of the valvate mechanism. Disconnect the ropes and hoses interfering access to spark plugs.
2. Mark wires of high voltage and disconnect them, using the special tool (it is specified by an arrow) if it is necessary.
3. Clear area around spark plugs and unscrew candles.
4. The condition of spark plugs can give valuable information on a condition of the engine.
5. If a candle tip pure and white, without deposits, so fuel mix is too poor.
6. If the tip of a candle is covered with black deposits, so fuel mix is too saturated.
7. If the tip of a candle is covered with light brown or gray deposits, so fuel mix is adjusted correctly and the engine, most likely, in good shape.
8. The spark gap of multielectrode spark plugs is not subject to adjustment.
9. Measure a spark gap of a candle by means of a set of probes (the drawing on the right) or the special tool (the drawing at the left).
10. Adjust a spark gap, having turned in a tip.
11. Establish spark plugs into place. For simplification of installation of spark plugs put on a short piece of a tube a candle. He will act as the universal hinge and will not allow to damage a carving.
12. Tighten spark plugs till the required moment of an inhaling and connect wires. Establish into place a casing.