In high-tech engines of modern cars, half of the engine will need to be disassembled to replace spark plugs, so it is not recommended to start this procedure without some preparation. It is better to do this at a service station. Replacing candles in a conventional engine does not present any particular difficulties, which absolutely any car enthusiast, both experienced and a beginner, can handle.
Necessary
- - candle wrench
- - spark plug
Instructions
Step 1
All that is needed to complete this procedure is a candle key and the candles themselves. To begin with, remove the high voltage wires from the candles, then clean the grooves in the cylinder head, in which the candles are located, from various debris that has accumulated there during operation. It is advisable, at the end of the cleaning, to blow off the nests with compressed air. And only then proceed to unscrewing the installed spark plugs.
Step 2
It is necessary to unscrew the plugs carefully and slowly, because there is no guarantee that during operation, carbon deposits have not accumulated on the threaded tip of the plug, which, when unscrewing them, can damage the threads in the block head, and this is very undesirable. Therefore, if the slightest load occurs when unscrewing, start screwing the candle back a couple of turns, sometimes such an operation has to be performed several times until the candle turns out easily and freely.
Step 3
Sterility during the process is necessary so that sand and other contaminants do not get inside the cylinder, which inevitably leads to increased wear of the engine piston group and a reduction in the vehicle's overhaul mileage. In the event that, despite the measures taken, the rubbish still got inside, it takes a few seconds to turn the engine with the starter without screwing in the candles. A similar procedure will help remove debris from the cylinders.
Step 4
After removing the debris and turning out the worn out candles, you can start installing new ones. Insert a new candle into the spark plug wrench and carefully hit the beginning of the thread in the head of the block, if the candle "does not rest" and is screwed in easily, without effort, then everything is done correctly, after its "stop", tighten the candle a little more. Replace the high voltage wire caps and start the engine.
