Help! No spark from right plug

[georgedickels51]

Hi guys,
So just recently I started having trouble with the bike.  Ran on two cylinders, then one for a while.  On one cylinder the bike ran rough and would try and spark the right cylinder and backfire.  I checked the left cylinder and got spark.  Checked the right and nothing.  Swapped out the spark plugs, still nothing.  The one thing I did notice - the right coil wire could be removed directly from the back of the coil.  Is this an ignition coil problem?  If it were a ignitor problem, it would affect both cylinders, right?  Hope someone can help!  Thanks.

[5thAve]

Try swapping the coils from left side to right. If problem reverses (no spark from left) then you know it's a bad coil.

[gsJack]

Hi guys,
.......................The one thing I did notice - the right coil wire could be removed directly from the back of the coil.  Is this an ignition coil problem?....................... 

Sounds like that's the problem, I had it myself.  Plug wire comes loose and cylinder misfires.  That's why the plug wires are bonded into the coils and most stay that way.  Could be corrected with new coil/wire assembly but I just snipped a quarter inch off the plug wire, put a big dab of dielectric grease on the end, and screwed it in tight.  Then I got a 6' length of new plug wire and I replace it from time to time, once a year when I check valves seems to do it.

[seamax]

That's what happen to me too. I found out later that my son was playing with the bike when I had the wires off and he twisted the head which I guess tore the wire inside.

[georgedickels51]

thanks guys.  Ill let ya know.  going to work on it now.