FORD SCORPIO

1985-1994 of release

Repair and car operation

2.10. Spark plugs

THE GENERAL DATA

Interelectrode backlash of a spark plug


Check by a template of an interelectrode backlash of a spark plug


Before removal of spark plugs to remove a dirt, using a pure brush, a vacuum cleaner or compressed air that prevents dirt hit in engine cylinders.

PERFORMANCE ORDER

1. To remove from spark plugs tips of high-voltage wires, and it is necessary to remove for a tip, instead of for a wire. 2. To unscrew spark plugs. 3. Check of spark plugs shows an engine condition. If the nasal part of an insulator of a spark plug pure and white, it shows that a mix too poor or "hot" spark plugs are used. 4. If the tip and a nasal part of an insulator are covered by firm black touch, it shows that a mix too rich. If black and oil, it is probable that the engine is worn out. 5. If the nasal part of an insulator is covered by easy light brown touch the mix is optimum, and it is probable that the engine in a good condition. 6. Щупом to check up an interelectrode backlash of a spark plug. 7. The interelectrode backlash of a spark plug has great value as at too big or too small backlash, the size of a spark of ignition and efficiency will be insufficient for normal work of the engine. 8. For installation of an interelectrode backlash to turn in an external electrode before reception of a demanded backlash. Not to bend at all the central electrode as it can split an insulator. 9. Carefully to wipe a carving part of a candle and to grease антипригарным with structure. 10. A hand to screw in a spark plug, having excluded its warp and to tighten the demanded moment. The moments of a tightening of spark plugs:       – Engine OHC – 25 Nanometers;       – Engine DOHC – 20 Nanometers;       – Engine V6 2,9 – 40 Nanometers;       – Engine V6 2,4 – 30 Nanometers. 11. To establish on candles tips of high-voltage wires and to check up reliability of their installation.