Hello, I’m a member for many years, with few contributions, but I hope this forum’s wonderful experts can help… I’m in Australia, have an Australian-delivered 1000R. Runs well (quiet engine), I’ve spent many hours and angles figuring out my overheating problems, now working on fuelling… Carbs are restored, and the bike runs well. Until higher revs & big throttle, then it totally flatspots. Everything in the carbs checks out, no blockages, good diaphrams. I think maybe main jets are wrong (just installed open mufflers, thought it must be running rich, but that made no difference!). It’s got 145 mainjets, front & rear. I’ve ordered some smaller jets (140, 137.5 and 135) to try them. Plugs don’t look sooty (after longer ride, not when it happens). Is it likely that reducing jet size may help (so many different jet sizes are mentioned in forum discussions, but mostly seem to use smaller than 145s):
Extra question- Which emulsion tubes go front vs. back? They’re not 5-hole vs 4-hole tubes- instead they’ve got their holes in different spots along the tubes (crap photo):
I just don’t have the time to take the carbs off repeatedly to ‘tune’ this thing, it’s such a chore. So many other projects. So I hope to get a noticeable improvement with a jet change, that’ll keep my enthusiasm up (!). This bike rides really well, I love it, but it’s taking a long time to sort out its problems (I’ve already changed head gaskets, rings, cams etc). Thanks to anyone who can share their experience!