Andy wrote:Why don't you just bleed it properly, drain the pipes into a temporary catch tank, and leave it on pre-mix for a 20 mile ride?
You'll soon see if it's working, as the (what shuld've been injected) oil will be in the catch tank.
As I've siad before, I've never personally seen one fail. Not to say they can't or haven't, but I've never seen it happen.
I'd personally do the same as Steve and Fontyyy, but it's up to you.
This is basically the process the MC28 manual goes through for bleeding the pump, it should be good to check it out. Don't even need to go for a ride, simple run pre-mix, hook the pump up with the tubes to a catch tankm and run the bike for a couple minutes.
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Charles Gallant