What kind of spark plugs does a Harley Davidson use?
The 2006 and up Harleys with EFI use “ion-sensing’ anti-knock technology, which reads the current flow to each spark plug to detect spark knock. The system is designed to be used with stock spark plug wires. Use of other spark plug wires may cause a malfunction.
Where are the spark plugs on a M8 Harley Davidson?
The M8 has four spark plugs; two per cylinder because, like it’s name, the M8 has 8 valves. Four valves per cylinder. Two of the spark plugs are in the same left side location as always.
What should the gap be on spark plugs?
Using a wire-type spark plug gap tool, measure the gap on the new spark plugs. There should be a very slight drag on the gauge when passing a 0.040″ (0.038″-0.043″) gauge between the center and outer electrode.
How often should you replace spark plugs on a Harley Davidson?
Fortunately, ignition system and spark plug technology have improved to where they are very reliable, but it doesn’t hurt to check or replace them every 10,000 miles to ensure the best performance. Wires typically last longer, but can be damaged if they rub against the frame or motor.
The 2006 and up Harleys with EFI use “ion-sensing’ anti-knock technology, which reads the current flow to each spark plug to detect spark knock. The system is designed to be used with stock spark plug wires. Use of other spark plug wires may cause a malfunction.
Fortunately, ignition system and spark plug technology have improved to where they are very reliable, but it doesn’t hurt to check or replace them every 10,000 miles to ensure the best performance. Wires typically last longer, but can be damaged if they rub against the frame or motor.
How does a spark plug work on a bike?
Spark plugs provide the ignition that burns the gasoline that makes your bike go. They have to operate under very severe conditions of temperature and pressure.
How do you remove a spark plug wire?
Figure 1. Removing front spark plug wire. Clean the area around the spark plugs to avoid dirt getting into the motor. Remove spark plugs with a 5/8″ spark plug socket and ratchet. Examine each plug center electrode tip when removed. They should be light grey, or tan.