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Old 27-03-11, 08:58 PM
Geoff Dowdle Geoff Dowdle is offline
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Join Date: Jul 2008
Location: Sydney, Australia
Posts: 408
Default Fuel Starvation (403)

Peter,
I had a similar problem some years ago with my 400 when fitted with 3 Solex carbs. Along a flat country road it performed very well until I encountered a relatively steep hill , it then ran out of power and I had to pull over. There was plenty of fuel on the tank , the pump was working well but when I checked for fuel in each carb I found that one was almost empty. The best way to check that is by removing the brass main jet holder on the drivers side of the carby.
The brass float was jamming in the carby body and not allowing enough fuel through when it was needed climbing a long steep hill.
I removed the carby top and with some fine sandpaper smoothed the three float guides on the inside walls of the float chamber . I then had no further problems .
I'm not suggesting this is your problem but it would be worthwhile checking each carb for fuel when you encounter the problem again.
Good luck

Geoff
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