nc30 fuel leak

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K18NEO
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Joined: Fri Aug 20, 2010 1:35 pm

nc30 fuel leak

Post by K18NEO » Sun Oct 10, 2010 9:27 pm

I been out on my VFR400 today, and it developed a fuel leak. After stripping fairing, tank and air filter off... i think ive found where it is located.

Has anyone experienced any fuel leaks? It appears its from a connector pipe inbetween the 2 carburettor but i wondered if there was any commen places? i can provide pictures too...

Neosophist
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Re: nc30 fuel leak

Post by Neosophist » Mon Oct 11, 2010 10:30 am

There are O-rings on the ends of these pipes.. bit of a ballache to change but not too bad.

I recentley changed all the O-rings on a leaky set of ZXR carbs, £20 for 12 o rings but it stopped the leak :-)

I dont' see it very often but it does happen.

Usually if the bikes been run with a fuel additive that isn't totally rubber safe.. especially if its sat with fuel in it, i've seen two sets of carbs, one was virtually leaking fuel everywhere due to perished o-rings and float bowl gaskets, the fuel pipes were also very brittle and porus.

The only difference was one had had some fuel additives put in it regularly, this I conclude ate the rubber away.

Of course they will go over-time anyway.. but the other bike was immaculate in comparission, both had similar miles too.
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