Can you replace a single spark plug?
Usually yes,if they are copper spark plugs which have done 40,000 kilometres or platinum or iridium spark plugs which have done 120,000–160,000 kilometres then they should all be replaced at the same time !
What’s the difference between a spark plug and a wire?
If you look at the photo below, you can see a little spring clip that extends into the hole. When you slide a plug wire end like this over the bare threaded tip of the spark plug, you can feel that clip as it slides down over the ridges of the threads, leaving no doubt that you have it on.
What causes inductance in a spark plug wire?
As current builds up in the coil, magnetic lines of force build up around the coil. It is the build up of these that causes the inductance. Now when the engine needs a spark, the connection that started the current flow is opened.
What causes a spark plug to jump out?
Over time a spark that is jumping can damage the plug wire or coil boot as the case may be. With the spark plug out I would advise running a compression check on that cylinder. Low compression can cause a plug to misfire which in turn, yada, yada, yada.
How are spark plugs supposed to work on a BMW?
When you slide a plug wire end like this over the bare threaded tip of the spark plug, you can feel that clip as it slides down over the ridges of the threads, leaving no doubt that you have it on. The original BMW 2002 plug wire ends are designed to accept the bare threaded post. Note the little clip on the hole. Rob Siegel
How do you get a spark plug out of a car?
Pull the wire plug from the engine by gripping it as closely to the bottom as possible and working it gently and carefully off to reveal the spark plug. Don’t yank on the wire to pull out of the plug, or you’ve got a bigger job on your hands and a ruined spark plug lead .
Where are the spark plugs located in a car?
When you open the hood or bonnet of your car, you should see a bundle of 4-8 wires leading to different points on the engine compartment. The spark plugs are located at the engine end of these wires, under the plug covers that attach them. On a 4-cylinder engine, spark plugs will be located on the top or side of the engine in a row.
What causes spark plug wire to get cut?
Wire insulation that’s damaged by head can allow voltage to jump to the ground rather than jumping the gap at the bottom of the spark plug. Abrasion damage – When spark plug wires rub against engine parts, particularly sharp edges, it causes cuts and breaks in the insulation.
What causes a spark plug to jump to the ground?
Heat damage – Engine heat can burn wire insulation and boots. A damaged boot can impede proper spark plug wire seating and performance. Wire insulation that’s damaged by head can allow voltage to jump to the ground rather than jumping the gap at the bottom of the spark plug.