Dropped a cylinder today

[Venturous Randy]

After a great weekend with putting at least 500 miles on the bike and it running great, I dropped a cylinder at lower RPM's today. As I was slowing down to pull into City Hall to pay speeding ticket I got in my wife's Maxima, there was a loud "pop" and a cylinder went dead. It did not sound like an exhaust pop. After I came out and was riding home, I had a definite miss up to about 2,500 RPM's and then it seems like all four are pulling good.

After getting off work tonight, I went out in the garage and started the bike and let it run for about 30 seconds at a little above idle. I then cut it off and felt of each exhaust. The right rear was still cold. I put another spark plug on the wire and restarted the bike. It had very good fire. I then pulled the diaphragm and it looked good.

I kind of sounds like the pilot jet may be clogged on that carb, but I don't know where the pop came from unless it was thru one of the carbs. I am going to take a look at that plug and may pull the carbs to look at that one.

I am open for suggestions if anyone has any.

Thanks,

RandyA

[bill p]

Mine did just that . Turned out to be the ignition module or brain. Ck each cyl for spark. And as you did ck each pipe for heat. Then ck the pick up coils... I hope you have a service manual, it is very easy with an ohm meter. I then switched coils to be sure the coils were not the problem...... Everything checked so I call buckeye performance ,and ordered a ign unit. Bike now runs perfect. :cool10:I found a bunch of corrosion in the plug to the ign unit,this maybe what caused the failure. I well coated the plug in the new unit with corrosion preventative grease.

Good luck

Bill P

[Venturous Randy]

I pulled the carbs this morning and removed the bowl cover on the RR carb. I pulled the pilot jet out and could not see thru it. I blew it out and put everything back together and when I started it, it sounded like it was fixed. As soon as I pulled it out of the garage, I realized it was not fixed. What it ended up being was the plug that I had put on the YICS vent for that cylinder that had come apart. I went to Auto Zone and picked up four new 3/8th rubber cap plugs and replaced the two on the right side of the bike and now it is running good again.

I also put about 3/4 can of Sea Foam in about a half tank of gas. I have also noticed that the last tank of gas will ping even under a medium load and that is something this bike has not done on regular gas. I am going to let the Sea Foam soak thru the carbs tonight and with new gas tomorrow, I think it will do good.

RandyA