12-09-15, 04:55 PM
Well a little update. Sorry it's taken a while to come back to you guys who contributed...bloody work! Firstly as part of a service all the plugs were replaced with spangly new iridium ones. This was done before the coils were replaced chaps. I have had them out and all looks well. As mentioned before I was aware the bike hadn't been run in a while when I got it so I was thinking fuelling. I have had the carbs out again...it gets quicker every time I do it! Think I could do it with my eyes closed now! ;-) I carefully blew out each jet with a air hose. One of the pilot jets I found to be very slightly dirty but far from fully blocked. While I was in there I checked and double checked the Ivans kit was as it should be...jet sizes, needles...remeasured springs...float heights etc. all ok. Sooooo..back together again. Stutter..it's less noticeable. You can go from standstill and accelerate through the 2500 k flat spot with no issues. Coming on the throttle hard in that rev zone though it still bogs down, clears it's throat chugging then tears off as you would expect. I have been running it into work and back 40 miles each way to get some fresh fuel round the system. I have even tried fuel cleaner additives and super unleaded. Most of the time the bike runs ok so I just got on with it and slipped the clutch to get me through the rough patch should it require it. I was starting to think the fresh fuel and cleaner was having an effect then on the way home yesterday after around 20 miles of riding the bike started running rough then dropped to a triple and virtually came to a halt. It was popping and spluttering and I kind of limped along revving the tits off the thing trying to clear what I took to be a blockage. Anyway..5 miles along the road the bike was so bad I stopped. I swore a lot gave it five mins of thinking then started it up. Bugger me if it didn't start straight up on all four again!. The usual 2500 k thing still persists but rest of the way home was ok. I even took it out for half an hour later that evening but couldn't get it to do the same again. So in a nut shell..it's running a bit better since cleaning the pilot jets but the stutter low down persists. I am at the point of considering getting the carbs properly sonic cleaned. Thanks for your patience guys and your thoughts.