I'm pretty sure the plugs in each cylinder fire simultaneously, which is why the book does not list a firing order other than coil to cylinder.
If I recall, the plug lead lengths are different, giving you the clue, but as Patc says, it doesnt matter. All the plugs on the 1500 vulcans fire at the same time. The firing at the bottom of the stroke is known as a "wasted spark system"My bikes a 98. Anyone know which spark plug wires go to which plugs. The book tells me nothing other than coil 1 goes to plugs 1 and 4, coil 2 to plugs 2 and 3. But I have no idea which plugs are which. A diagram or good description would be very helpful. Thanks.
Hmmm, not quite correct.If I recall, the plug lead lengths are different, giving you the clue, but as Patc says, it doesnt matter. All the plugs on the 1500 vulcans fire at the same time. The firing at the bottom of the stroke is known as a "wasted spark system"
we've dome this to death, whatever.Hmmm, not quite correct.
Front pair fire together and rear pair fire together at the correct time for that cylinder. All four do not fire at the same time.
As an add, the "wasted spark" occurs at top of stroke, not bottom.
Sorry, I do not know what you mean by this.....we've dome this to death, whatever.
1. All they told me was that rear was in spec and front only had about 10 lbs.1. What was the actual compression readings you got front/rear?
2. What was checked/replaced/repaired in the rebuild?
3. To check starter solenoid, pull connector cable from top, then touch cable to battery. If starter wants to run, solenoid is bad.
4. Did you replace fuel filter and check fuel pump pressure and flow rate?
5. Pull the plugs and tell us what you see, picture even better.
6. Is the tank clean inside?
I do not mean to lecture, but these engines are easy starting and if it will not start right up, then repairs are in order. Excessive cranking will not help/fix anything and only puts strain on the battery, wiring, starter and its drive components.