Problems With Ignition Advance?

[Tom W.]

Hi Everyone:<br />She runs good now! First, I'd like to thank Loud Mouse for talking with me and suggesting what to check. It was a great help!<br /><br />After eliminating the carburation as the source of the problem, I decided to swap the coils. In the process of swapping, I did what Loud Mouse suggested and clipped 1/4&quot; off the ends of the wires. Sure enough, after that the engine ran great. Last night she pulled hard and I rev'd it up to ~8K rpm.<br /><br />I should mention here that I added a longer fuel line from the right side of the tank to the petcock. With the long fuel line I was able to prop the tank up with a wood block and swap the coils. I was draining the fuel tank every time I worked on the carbs and that was driving me crazy.<br /><br />Thanks to everyone that helped,<br />Tom

[cr_monk]

hello-<br /><br />sorry to be jumping in the middle of this thread, but I've been following it closely as I am having a similar problem with my CA77.<br /><br />You mention &quot;swapping&quot; the coils...would this be ignition? are there 2 on the CB's? And what is with the &quot;clipping&quot;?<br /><br />Sorry for my ignorance.<br />much thanks.<br />

[kustommusic]

Monk, They were saying you could try to cut some off the spark plug wires(about 1/2 in.) and replace the fresh end into the coil,if you have enough length do it on the spark plug end too. If the spark has to jump a gap it builds up a carbon like corrosion that acts like a resistor in the end of the plug wire.<br /> There are two seperate coils on a CB (kinda makes life simpler dont you think?) On your CA you have one with two secondary outputs,those can be swapped. I dont know if that acomplishes the same thing though. The firing is different between the two,CA is a Twingle set up(both cylinders fire in unison) Just a note: I working on memory here,if L.M. or someone else knows different please let us know.Steve Greer

[LOUD MOUSE]

Ca72/77 ignition.<br />Both cylinders do fire the plug at the same time but one cylinder is on compression stroke and other is on exhaust stroke. .............LM

[kustommusic]

Thanks Ed, Steve

[cr_monk]

Thanks for the clarification.<br /><br />I have finally broken down and am getting a new ignition coil and plug wires. So I guess it is moot.<br /><br />thanks again though!