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I’ve got the same on the Duc when it’s hot at the moment. You have to stall it down with the clutch, then it’s fine. I suspect the pilot might be a touch lean. It’s annoying for sure!
Jung-
Infuriating.
All I wanted to do was adjust the main jet needle clip to try resolve the flat spot until I get some new jets (it’s running lean) and I think that I damaged something in the carb. It was a ballache to disassemble and some parts were made of stale cheese.
I’m away for a few days so thinking to put the CV carb back on next week when I get home, and then think about next steps.
Maybe I was spoilt by how dead simple the PWK28 is on the Sherco, that I forgot how messy the Mikuni’s can be if you don’t act like a surgeon.
pdlouche
Turns out that GPX600R was the guy’s wife’s bike. It’s gone and I’ll probably never see it again. Sad bike noises.
Massive issues with the pumper carb on the DR. I think I messed up and damaged inside when trying to adjust the main jet needle. Idle hangs at 2k then drops to 1.5k on its own accord. Weird lean/airleak type hang, but not.
Pumpers are a bitch.