Thread: Suzuki King Quad Carburetor help

I'm having an issue with my 1998 Suzuki King Quad Carburetor someone may be able to help with or explain what has happened here.

The bike has been running good but yesterday while on a ride up the river we completed several river crossings, nothing too deep but one crossing was slightly less than knee deep. The bike handled it well even on the return trip.

About 200m after the last crossing and about 50m from the trailer It began to loose power and finally cut out all together.

I could restart it after a couple of pumps on the throttle but it would run rough and not rev out or idle.

I pushed it onto the trailer and bought it home.

Once home I began the investigation.

Long story short I found the problem was the bike was running very rich would not idle and would not rev out.
There was not sign of water in the airbox or carburettor and no fuel blockages were found.

However I have managed to remedy this issue with a work around fix but would like to understand what has gone wrong here.

The attached photos show the work around.

This photo shows the intake from the petcock which I have blocked off with some plastic hose and a cable tie.


Close up of the fix also showing the disconnected petcock line.


This photo shows the origin of the disconnected petcock line which is the righ hand side line.

What I discovered was the Carburetor is sucking fuel through this right hand petcock line from the petcock to the carburettor making the bike run really rich which results in loss of power as described above.
By disconnecting this line and blocking off the inlet on the carburettor the bike runs and idles as per normal.

Why is this?

Any help would be appreciated.

BTW. I have since discovered a friend who has a 400cc King Quad with the same carburettor has also has the same issue and fixed it exactly how I have shown here.

Cheers
Pete