Ok, its an '03 and all I touched was the plugs. How do I check the gap and what would I be looking for in the wires?
You will need a wire type spark plug feeler gauge to check the gap. If the plugs don`t have multiple electrodes on the circumference of the base, but ony 1 L shaped electrode close to the center electrode, you can also use a coin shaped, ramp type feeler gauge. (Bottom one in link below.)
If you have a Clymers manual there are pictures in chapter 3 on page 97, that show you how to use the gauge.
Table 6 at the end of Chapter 3 gives the gap as 0.8-0.9mm, or (0.030 -0.040 inches, read as 30 to 40 thousandths of an inch).
Here is a link so you can see what you need. (The flat feeler gauges are not used for plugs, but for other jobs.) http://www.mytoolstore.com/kd/kdfeel02.html
Try checking your plugs and wires for spark by grounding the plug base against the engine while pressing the starter button with the ignition turned on. Any that don`t give a bright spark, exchange the new plug for one just taken out and try again. If you still don`t get a bright spark, you may have a bad wire or connector in the boot.
Disconnect the plug wire from the ignitor and do a continuity check with an ohm meter. If you get infinate resistance the wire is broken. I can`t find any referece to what the resistance should be for copper core wires that the vn has. (Carbon core wires on my `92 Olds should be 5000 to 7000 ohms per foot, I believe.) If you get any resistance reading, other than infinite, you know the wire is not broken.
Anyone else know what resistance reading we should get on the plug wires?
1991 VN 750 -"Cosmic Lady
" or "Bad Girl
Purchased May 16, 2008
Approx.19,300km (12,000 miles)
Fiamm Freeway Blaster horns
F&S luggage rack and engine guard
Kury Offset Hiway pegs
July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15
TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO.
Click on link.