#1 not firing

[midnightsunrider]

Hi all.

There’s been a little bit of talk about coils going bad on the 2nd generations. I think I might have one going out on the #1 cylinder (left rear). I have compression, fresh fuel, new plugs (cleaned the carbs TWICE) and even have some spark, (just not sure how strong). But I can grab the exhaust while the bike is running and the other 3 are hot. I am going to switch the two back coils tonight to see if that is indeed the problem. I hope it is, so I can put this gremlin to rest. If the coil is the problem, I need to order one and they are on back order. So….My question is this. Can I block the fuel off to the carb for that cylinder so I’m not wasting so much fuel? These things run surprisingly well on 3 cylinders. So why not block the fuel to that carb and ride until the new coil comes in? Thanks in advance for any advice and help you all can offer. :bowdown:

[GeorgeS]

Go to the service manual, ( on this web site in 2nd gen maint. library ) if you don't have one.

 

Do the resistance check.

 

But, It might still be bad, even if resistance check is good.

 

Try swapping the Input wires, and the Plug wire to another cylinder, see what happens.

 

there have been several reports of failed Ing Coils, here on this web site for 2nd gens.

 

 

But, thats a lot of work, you might as well get a new one, and even if its not the problem, then you have a spare. ( I always carry one on trips. )