SOHC.co.uk Forums > CB500/550
Trouble with bike
Oddjob:
It sounds like you've mixed up the HT leads. The coil with the blue wire runs 1 and 4, the one with the yellow wire runs 2 and 3. I suspect you've got the left hand coil trying to run 1 and 2 and the right hand 3 and 4. Just get them in the right order and it should at least fire on all 4 cylinders.
beardylondon:
Thanks both, we will check this out.
McCabe-Thiele (Ted):
Been there, done that on my 400, the engine did pop & bang.
beardylondon:
Just to confirm, that no.1 is on the left, as you sit on the bike and look down?
Is there a wiring diagram someone can post?
--- Quote from: Oddjob on March 18, 2025, 07:57:34 PM ---It sounds like you've mixed up the HT leads. The coil with the blue wire runs 1 and 4, the one with the yellow wire runs 2 and 3. I suspect you've got the left hand coil trying to run 1 and 2 and the right hand 3 and 4. Just get them in the right order and it should at least fire on all 4 cylinders.
--- End quote ---
K2-K6:
--- Quote from: beardylondon on March 18, 2025, 09:24:58 PM ---Just to confirm, that no.1 is on the left, as you sit on the bike and look down?
Is there a wiring diagram someone can post?
--- Quote from: Oddjob on March 18, 2025, 07:57:34 PM ---It sounds like you've mixed up the HT leads. The coil with the blue wire runs 1 and 4, the one with the yellow wire runs 2 and 3. I suspect you've got the left hand coil trying to run 1 and 2 and the right hand 3 and 4. Just get them in the right order and it should at least fire on all 4 cylinders.
--- End quote ---
--- End quote ---
Yes the No1 is left most when sitting on bike.
As that #1 cylinder is showing decent running the coil supplying it also must be OK. The other HT lead, from that same coil, MUST go to the far right cylinder which is #4.
That leaves the other coil Independabt with two HT leads ..... which go to the middle two cylinders, doesn't matter which way round.
That will,be correct to run at that.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version