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7.3. Spark plugs


Prevention

Do not serve a spark plug on the hot engine.


Removal

PERFORMANCE ORDER
1. Disconnect a wire from the negative plug of the rechargeable battery.
2. Disconnect high-voltage wires.
3. Compressed air clear candles that will exclude hit of dirt in engine cylinders after a vyvinchivaniye of spark plugs.
4. Turn out a candle, using a candle key. For an exception of damage of a candle, establish a candle key strictly along a candle axis.

Check

PERFORMANCE ORDER
1. Connect a wire to the negative plug of the rechargeable battery.
2. Connect a spark plug to a high-voltage wire.
3. Holding a spark plug special passatizha with the isolated handles, connect the candle case to the mass of the car.

Prevention

Do not concern a car body during performance of the following operations.


4. The assistant has to turn a bent shaft of the engine a starter, at the same time between electrodes of a candle steady strong sparking has to be observed.
5. In the absence of an ignition spark, or an ignition spark weak, check a state and correct the following defects:
      – in the presence of a deposit clear or replace a spark plug;
      – at pollution by oil clear or replace a spark plug;
      – at wear or burning out of electrodes replace a spark plug;
      – at destruction of the ceramic insulator replace a spark plug;
      – at damage of a ring of a spark plug replace a spark plug;
      – at violation of an interelectrode gap in a spark plug, adjust a gap. Correction of a gap is carried out by a podgibaniye of a side electrode. The central electrode cannot be bent at all as it can lead to breakage of the insulator and an exit of a candle out of operation. For a podgibaniye of a side electrode of a candle it is necessary to use the special tool.

Interelectrode gap of a spark plug:
TED: 0,7–0,8 mm
BFD: 1,0–1,1 mm

Installation

PERFORMANCE ORDER
1. Screw a spark plug in a head of the block of cylinders.

Inhaling moment: 25–30 N • m

2. Connect a high-voltage wire to a spark plug.

3. Connect a wire to the negative plug of the rechargeable battery.