Continual Fuel Leak From Overflow Hose - Honda Rincon Forum : RinconRiders Honda Rincon Forums
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post #1 of 8 (permalink) Old 07-21-2019, 09:59 AM Thread Starter
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Continual Fuel Leak From Overflow Hose

New Member.....I have a 2003 650 Rincon and my carb was leaking out the overflow hose. It had set up for a couple of years and I finally got around to getting it going again. It ran like shit and with the leak I thought I would do a carb rebuild but found one on Amazon for 77 bucks so I just got a new one. Replaced it and it did great. Well now my leak is back. I'm thinking maybe it's the petcock under the tank. I went to order a new one of those and all the reviews say the O ring doesn't fit. Should u just bite the bullet and get an original Honda petcock? Going to get a new spark plug today to see if that will help it run a little smoother.
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post #2 of 8 (permalink) Old 07-21-2019, 10:30 AM
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Does the leak happen when the petcock is on or off or both? Either way it has to be the needle and seat or float.

2005 Green Rincon, Dynotek Ignition, Dynotek HP Coil, HMF Utility Exhaust, K&N Air Filter with Outerwear, DynoJet Spring and Needle, Keihin Jets 162 Main, 52 Pilot ,TPI Valves, 2500 Super Winch, Warn Front Bumper, ATV-GURU Rear Bumper, HighLifter Front Springs, A\P Belly Plate\w front and rear Stick Gaurds, ITP Wheels, Bighorn 25 inch Tires, AIPP Headlight Bulbs, Temp Gauge, Modified A\F Screw, Tiny Tach, Rear Hitch, ATV Guru Front Tow Hook, Stainless Steel 17-4 Tie Rods
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post #3 of 8 (permalink) Old 07-21-2019, 10:33 AM
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Also if you paid $77 for a NEW carb it is not OEM. It is probably a China Knock Off.

2005 Green Rincon, Dynotek Ignition, Dynotek HP Coil, HMF Utility Exhaust, K&N Air Filter with Outerwear, DynoJet Spring and Needle, Keihin Jets 162 Main, 52 Pilot ,TPI Valves, 2500 Super Winch, Warn Front Bumper, ATV-GURU Rear Bumper, HighLifter Front Springs, A\P Belly Plate\w front and rear Stick Gaurds, ITP Wheels, Bighorn 25 inch Tires, AIPP Headlight Bulbs, Temp Gauge, Modified A\F Screw, Tiny Tach, Rear Hitch, ATV Guru Front Tow Hook, Stainless Steel 17-4 Tie Rods
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post #4 of 8 (permalink) Old 07-21-2019, 01:53 PM Thread Starter
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Yes it leaks no matter the position the petcock is in On, Off, Res. Which is why I thought replacing it would help. Although I would think it leak if something wasn't wrong with the carb. It's brand new so I'm at a loss at to why it is still leaking.

I have to remove the fuel line from the carb and stick in a gas can otherwise it just continues to leak unless it is running. It don't leak while it's started.
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post #5 of 8 (permalink) Old 07-21-2019, 02:54 PM
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The float in the carb is probably stuck down. Allowing fuel to flow into the bowl and out the overflow tube as the float is unable to be shut off fuel flow. (float at the top) . Needle, Seat and float need to be checked as mentioned above..... regardless of the carb condition or make.
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post #6 of 8 (permalink) Old 07-22-2019, 10:05 AM
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Also if it still leaks with the petcock in the off position you have a problem with the petcock also. After every ride I turn the petcock off and run the engine until it runs out of gas. That way the carb is empty when not in use.

2005 Green Rincon, Dynotek Ignition, Dynotek HP Coil, HMF Utility Exhaust, K&N Air Filter with Outerwear, DynoJet Spring and Needle, Keihin Jets 162 Main, 52 Pilot ,TPI Valves, 2500 Super Winch, Warn Front Bumper, ATV-GURU Rear Bumper, HighLifter Front Springs, A\P Belly Plate\w front and rear Stick Gaurds, ITP Wheels, Bighorn 25 inch Tires, AIPP Headlight Bulbs, Temp Gauge, Modified A\F Screw, Tiny Tach, Rear Hitch, ATV Guru Front Tow Hook, Stainless Steel 17-4 Tie Rods
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post #7 of 8 (permalink) Old 07-22-2019, 10:55 AM
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My 2 cents.
Bad idea as mentioned to buy a knock off carburetor.
New OEM Honda for sure.
Could be gas tank has crap in it and junk is getting in the carb and needle valve or float is affected.
When my OEM original carb started leaking fuel out of the over flow tube it was the diaphragm. Had a hole in it.


Oil it, lube it, fix it. 2003 Rincon
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post #8 of 8 (permalink) Old 07-24-2019, 09:44 PM Thread Starter
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Thx for the info guys. I got a buddy that is a mechanic that is going to go through it for me and fix whatever problems he finds.
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