OK need help again???

today I started my bike and it already has an idol problem until you ride it for about 10 minutes. anyways i was riding in 3rd gear down my street and all of the sudden the bike just started dying like i hit the kill switch. so i pulled over and when i finally got it started it would just idol but when you gave it gas it made a popping noise but wouldn't rev an higher than idol. it seemed as if only 2 of the 4 pistons were firing or something. so after giving up on it i decided to just put it into first and ride it at idol speed home since i was just down the street. well after about 3 minutes of that all of the sudden it just started to run like normal so i hauled ass home and haven't touched it since. so in the end something was causing it to barely run then all the sudden it switched back????? what could it be, i suspect float sticking or electrical issues. but i am a newbie so any help is greatly appreciated. thanks.

btw i am replacing the petcock and rebuilding the carbs starting as soon as i get off work tomorrow, just wanted so ideas or if anyone has had this same scenario happen to them? Thanks again and sorry for writing so much. I just want to ride!!! its a 1981 xj650 midnight maxim.

 

Sounds like c@@@ in the fuel line.

 

sooooo, what do u recommend i start with?

 

Clean out the tank, petcock & then the carbs.

 

Another thing that can happen is you're running out of fuel and need to be on RES. It can look like there is a lot of gasoline when in reality you're down to the last half gallon or so.

 

Did you replace the fuse block yet?

 

Might be inappropriate arcing with your spark plug leads due to age and heat.