I've tested the exhaust pipes to see which ones are getting hot. coincidentally i find the 2&3 cylinders not getting really hot. i then went and tested each spark plug for a spark. i removed each plug one at a time and touched to metal on the engine and got a spark each time i hit the starter button. i recall mostly a white spark but it could have been blue...anyways on each plug, i got a spark. I then started the bike and removed each SP wire one at a time to see what happens. there was no difference in performance when i removed #3. in fact it started without the wire on. When removing #2 it ran just about the same but slightly more hesitant. When I removed either #1 or #4 the motor would stall. I then traced back the wires to the coils and found which one controlled those two cylinders. When i disconnected the connections on the back of the ignition coil for #s 2&3 the motor would still run the same as with the prior test. When pulling the connections from the back of the 1/4 IG Coil the motor would stall. Could this be a coil problem? I'm about to get a voltmeter and test the Ohms of the coils, but I'm not sure of the correct readings I should get. If you have any solutions on this problem please help!! thanks!
Since you are getting sparks to all the plugs thn the problem could be tht of fuel to those two cylinders 2 & 3.
What was the condition of the spark plugs in those two cylinders? ( 2 & 3 ), were they wet or dry?
Try te following,
Swap the spark plugs form the firing cylinders and fit them to the cylinder 2 & 3.
Try to block up the air intake side of those two cylinder carburator and start the bike's engine see if they would fire, if they do fire thn theres a problem to those two carburators, fuel is not going into the combustion chamber, the problem could be float level , or the jets may need to be blown with compressed air.
Hope this helps!
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