June 9, 20188 yr Hi i've got a fuel problem on my montesa 315 . I haven't used it for a couple of months so I decided to give the carb a clean and at the same time I replaced the old fuel line with a new one . Now there is no fuel coming out of the petcock . It comes out with no pipe on . so the petcocks not blocked and the fuel line isn't trapped or kinked .
June 9, 20188 yr check your new fuel line is clear. Is it rubber ?? Have had experience with old skool rubber pipe & O rings swelling up with modern fuel, to the point of no flow.
June 10, 20188 yr Author Still no joy . petcock clear ,petrol comes through with no pipe on . Petrol cap breather clear . Took carb apart . All looks good . Put it back together & still petrol wont come down the pipe .
June 10, 20188 yr Sounds like your carb fuel inlet valve, aka: needle/seat is either sticking closed or plugged
June 10, 20188 yr Or as previously asked, double check to make absolute sure you have reassembled the carb correctly. Good luck
June 11, 20188 yr Author Hi Many thanks for everybody's ideas and advice . Bike running sweet . Turns out Paul320 was spot on . It turned out the needle was stuck .
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