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Weeping petrol on start-up

280 Views 8 Replies 3 Participants Last post by  Easy Rider
I have a 80s Suzuki GSX400F Katana, which generally runs well. At the moment, when starting the engine from cold, I am seeing a small amount of petrol weeping (please see the photos attached). I cannot see any obvious damage around the area to see where the petrol is coming from. Last season, I had no problem in this area, and this has just started as I am preparing the bike for the coming season.
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Has anyone ever had a similar situation, and do you have a fix?
Many thanks in advance.
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It's impossible to see the leak with pictures.

It is not unusual for gaskets to dry out on a 40 year old vehicle and cause some tiny leaks.

In general, that should not really be a problem........IF it doesn't get worse and you don't mind a whiff of gas
odor when starting out cold.

It likely is the gasket around the top of the bowl.
IF you can find the proper gasket, the fix should be fairly easy. Should be able to do it without taking anything off except the bowl.

BUT if you have never dis-assembled a carb before, I strongly suggest that you let a shop do it.

Have you tried to carefully tighten the screws that hold the bowl on ??
The key word is carefully.
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May also be the float level is too high causing fuel to seep from the joint.
Good catch.
Or out the overflow.
Also a good carb cleaner may work ER likes Gumout....;)
Actually original Gumout seems hard to find these days.
I like Berrymans B12 Chemtool better.
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