Well,I went out for a blat today on my '98 carbed bird.Weather was sunny,dry and cold(about 2c).About 20 miles in,I noticed a slight missfire.It got worse,but every now and then it seemed to clear for a few seconds.My first thought was carb icing.Exactly the same used to happen on my ZZR1100's.
I stopped,left it for 10 mins,started up again fine and all was well for a mile or so,before the missfire returned.I stopped and left it another couple of times,each time it restarted fine and was running sweet....for about a mile and the missfire was back.By now it seemed like it was running on 3 cylinders all the time.
I've been back an hour or so,and just been out to start her up again.Still running on 3.:xm
The bike's a standard 40000 miler,and since getting her,I've done about 4000 trouble free miles.Oil and filter was replaced about 1500 miles ago along with a new Honda air filter,and other than fitting heated grips about a month ago,I've not messed with anything at all,just ridden her!The bike does live outside under a cover,but get's used pretty much every day.
Anyone any ideas what could be wrong?The only thing I'm not sure about is when the plugs were last replaced.Could this have such a drastic effect?I've not looked at anything on her yet as it's dark out there now.
Cheers.
Mike.
I stopped,left it for 10 mins,started up again fine and all was well for a mile or so,before the missfire returned.I stopped and left it another couple of times,each time it restarted fine and was running sweet....for about a mile and the missfire was back.By now it seemed like it was running on 3 cylinders all the time.
I've been back an hour or so,and just been out to start her up again.Still running on 3.:xm
The bike's a standard 40000 miler,and since getting her,I've done about 4000 trouble free miles.Oil and filter was replaced about 1500 miles ago along with a new Honda air filter,and other than fitting heated grips about a month ago,I've not messed with anything at all,just ridden her!The bike does live outside under a cover,but get's used pretty much every day.
Anyone any ideas what could be wrong?The only thing I'm not sure about is when the plugs were last replaced.Could this have such a drastic effect?I've not looked at anything on her yet as it's dark out there now.
Cheers.
Mike.