Why are my spark plugs not working on my BMW?
It sounded like a carburetor issue, maybe jetting, but I’m really much better with mechanically injected BMW engines. When I finished the valve adjustment, I screwed the spark plugs back in, then began to place the spark plug wires back on the plugs.
What do you do with spark plugs and wires?
Since valve adjustment requires rotating each piston to top dead center in its cylinder, and since that’s easiest to do with the spark plugs removed, I disconnected all four plug wires and pulled the plugs out.
Can a plug wire be used with a terminal nut?
The other type of plug wire end is meant to be used with the terminal nut. The connector inside it has a larger diameter. It makes a less positive thock as it snaps onto the nut. The plug wires on my Lotus are meant to be used with plugs with the terminal nuts attached. Rob Siegel
What should I do if my spark plug wire is bad?
With the engine running, move the test light along the length of each spark plug wire. If a spark jumps from a plug wire to the test light at any point, this is an indication that the insulation has broken down, and the spark plug wire should be replaced.
How often do spark plug wires need to be changed?
Average rating from 253 customers who received a Ignition Cable (Spark plug wires) Replacement. Spark plugs provide the electricity necessary for combustion to happen by igniting atomized fuel in an engine’s cylinders. However, they need a constant supply of electricity to do that. This is the job of your spark plug wires.
Why do spark plugs wear out over time?
And, just like your plugs, the wires wear out over time. Once they begin to wear, the electrical charge sent to the spark plugs can be unreliable, which creates problems with engine operation, including rough idling, stalls, and other issues.
What causes a spark plug wire to burn?
This causes an increase in the voltage required to fire the spark plug, which could damage the ignition coil as well as the spark plug wires. Heat damage – Engine heat can burn wire insulation and boots. A damaged boot can impede proper spark plug wire seating and performance.