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Quickie question: Spark plug wire routing?

  • Thread starter Thread starter BigDaddyD
  • Start date Start date
B

BigDaddyD

Guest
So I feel this might be a silly question but when I was adjusting my valve tappets I noticed the routing of my Spark Plug Wires to my Coils seemed a little weird on my '77 GS750.
So I cross-checked them with the manual and I'm a little confused.
In the manual the diagram shows one coil runs the #1 and #4 cylinders and the other runs the #2 and #3.
However, my coils are set up so one is running #1 and #3 and the other runs #2 and #4

So how should they be set up?
And which coil runs which Cylinders? (looking at the bike from the seat, the left or right coil as mounted on the frame)

Since doing my valve adjustments, the bike runs better, but I'm still getting a little "Lurching" while riding, and also some slight miss-firing/backfiring out of the #4 cylinder. I know there's other stuff I can check for these problems, but noticing the coil wires, I wanted to make sure they were right first.
 
BigDaddyD said:
So I feel this might be a silly question but when I was adjusting my valve tappets I noticed the routing of my Spark Plug Wires to my Coils seemed a little weird on my '77 GS750.
So I cross-checked them with the manual and I'm a little confused.
In the manual the diagram shows one coil runs the #1 and #4 cylinders and the other runs the #2 and #3.
However, my coils are set up so one is running #1 and #3 and the other runs #2 and #4

So how should they be set up?
And which coil runs which Cylinders? (looking at the bike from the seat, the left or right coil as mounted on the frame)

Since doing my valve adjustments, the bike runs better, but I'm still getting a little "Lurching" while riding, and also some slight miss-firing/backfiring out of the #4 cylinder. I know there's other stuff I can check for these problems, but noticing the coil wires, I wanted to make sure they were right first.
Click to expand...
Left 1 and 4
Right 2 and 3
 
Awesome.

Thanks guys!

So... how is the bike even running if my plug wires have been wrong this whole time?

You don't think it mighta messed anything else up would it?
 
BigDaddyD said:
Awesome.

Thanks guys!

So... how is the bike even running if my plug wires have been wrong this whole time?

You don't think it mighta messed anything else up would it?
Click to expand...

Good question - let us know how it runs after you get the wires routed correctly.
 
BigDaddyD said:
Awesome.

Thanks guys!

So... how is the bike even running if my plug wires have been wrong this whole time?

You don't think it mighta messed anything else up would it?
Click to expand...
The engine can ignite,but in the wrong order.Can cause enginefailure in a long run.
 
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