What would cause 2 and 3 to not fire?

[Johnnylevi]

we do not have points... just to clarify. Although... idk what replaces that haha

[Piute]

Description
New Honda OEM Style CDI Box: small OKI style ignition control unit. Some bikes require 2 parts, so please order appropriately.


1979 1980 1981 1982 HONDA CB 750 CB750 C/F/K/L/ 750C
http://www.ebay.com/itm/1979-1980-1981-1982-HONDA-CB-750-CB750-C-F-K-L-750C-750F-NEW-CDI-BOX-CB750C-/230824725970?_trksid=p2047675.m1850&_trkparms=aid%3D222001%26algo%3DSIC.CURRENT%26ao%3D1%26asc%3D11%26meid%3D6618450097653653078%26pid%3D100011%26prg%3D1005%26rk%3D3%26sd%3D321044539029%26#ht_1212wt_671

                                                                    I'M still LEARNINg too

[shinyribs]

FastCletus wrote

1:Am I an idiot (wait don't answer that)  

2:What would cause engine to just all of a sudden produce too much electrical power.

3: The bike ran fine prior to changing plug wires?

1: NO! You are not. Electrical gremlins are the worst kind to figure out

2: I'd bet its the voltage regulator. For what ever reason sometimes they fail and will allow the charging system to just run at full tilt vs regulating it down to ~14.5-14.7 volts. Or whatever the manufacturer calls for.

3:Thats always the kicker. When everything is fine one day,then all of a sudden...kaputt. Classic electrical issue.

Did you replace your plug wires with factory style replacement wires? I know some (not all) coils need a certain amount of resistance to operate properly.Without it parts can fail.

For instance,on the SOHC bikes,if you run DYNA coils and crank the bike with the plug wires disconnected it will fry the coils. I'm not saying this is what happened to you,just thinking out loud thru all of the variables.

[FastCletus]

PIUTE-  you win CDI / Starter box was the culprit.  we swapped the box from cylinders 1&4 and put it on 2&3.  Guess what 2 and 3 fired and not one and 4 so that was the issue.  Now just have to order one.

Thanks for help

[shultz_1978]

 Nice good to see you got it figured out.