Hello,
I purchased a '92 EX500 about a month ago, and it ran perfectly up until one week ago. As the rpms climbed, the engine would 'hiccup' as if out of fuel for a split second, and immediately continue to accellerate. These 'hiccups' would occur anywhere from 4,000-10,000 rpm. A few days later, the problem grew, and now the bike is runnning on the left cylinder anywhere below 7,000 rpm, after which the right cylinder kicks in instantly and the bike takes off. Furthermore, the bike has trouble idling, and accelerating from stops.
I figured it was a carburator problem, so I took the carbs out and cleaned the pilot jet, main jet, etc. I also cleaned the air filter while I had the tank off. I put everything back together, and although the bike ran a little smoother, the right cylinder still doesn't fire below 7,000 rpm and the 'hiccups' still persist.
Any other suggestions are greatly appreciated.
PS: any thoughts on using Shell Rotella engine oil?
Thanks
I purchased a '92 EX500 about a month ago, and it ran perfectly up until one week ago. As the rpms climbed, the engine would 'hiccup' as if out of fuel for a split second, and immediately continue to accellerate. These 'hiccups' would occur anywhere from 4,000-10,000 rpm. A few days later, the problem grew, and now the bike is runnning on the left cylinder anywhere below 7,000 rpm, after which the right cylinder kicks in instantly and the bike takes off. Furthermore, the bike has trouble idling, and accelerating from stops.
I figured it was a carburator problem, so I took the carbs out and cleaned the pilot jet, main jet, etc. I also cleaned the air filter while I had the tank off. I put everything back together, and although the bike ran a little smoother, the right cylinder still doesn't fire below 7,000 rpm and the 'hiccups' still persist.
Any other suggestions are greatly appreciated.
PS: any thoughts on using Shell Rotella engine oil?
Thanks