Carburetor has a slight leak... - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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  • 1 Post By pdwestman
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Old 03-10-2017, 10:52 PM Thread Starter
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Carburetor has a slight leak...

Just bought the bike and I negotiated a lower price because the carb was dripping. After I rode it home it wasn't dripping but I see gas "sweating" on the bottom. I'm thinking maybe it's the float bowl gasket. Seller mentioned someone taking it apart to do the 22 cent mod so maybe they recycled the old gasket. Shoot, I was gonna post a pic but I'm too new for that I think. You would see from the left side where the fuel line goes into the carb that it's moist above the connection. Maybe there is a wicking effect where gas is coming out of the line? It seems to be moist halfway up this round looking structure on the side of the carb so I don't think gas travels up like that. Maybe it's another gasket.
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Old 03-11-2017, 03:48 AM
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No tellin' what POs have done; no gasket replacement necessary for .22-cent mod.

Suggest checking of hoses and clamps; drain screw; maybe float level.
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Old 03-11-2017, 10:30 AM
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jeffrimerman,
I'll guess this is a Gen1, 1987-2007 or possibly early Gen2 '08-'09?
The fuel leakage could be from the 2 little 'o'-rings on the plastic fuel inlet nipple. Qty 2 , #92055-1246 O-rings.
Metal bracket holds down a little round cover with a VERY Strong Spring and the fuel & air vent nipples? Don't lose the screws or the spring.

If your bike doesn't have the metal hold down bracket let us know.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 84,000+ miles & counting
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Old 03-12-2017, 05:05 PM Thread Starter
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It's a Gen 1 2001. I can email a pic if that helps but maybe you're right about the O ring. I'll try a new fuel line and clamp to start. Do you know if it's a 1/4" inside diameter? I googled but didn't see anyone stating. I should search in here.

Found a helpful youtube video someone on here posted in 2016. At about 6 min in it addresses the part that could be the issue. It looks like I could have gas coming out where the tiny O ring under the round cover with the spring. That might be a tough ring to get a hold of but I think Oreilly's has a bunch of generic ones. I had to buy some for a Vmax I had a while back that also had a fuel leak.

pic of my carb

Last edited by Tom Schmitz; 03-12-2017 at 06:14 PM. Reason: activate URLs for youtube and photobucket
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Old 03-12-2017, 06:34 PM Thread Starter
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Thanks Tom for activating before my 15 posts. This helps a lot.
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Old 03-12-2017, 08:08 PM
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The other elbow above and to the left of the fuel inlet elbow and its two o-rings are interchangeable with the inlet elbow.

The line to the other elbow is just a float bowl vent line to maintain atmospheric pressure on the gas in the bowl. It has no pressure on it and the bike would continue to run fine if it got broken off. Keep that in mind in case you break the inlet elbow out in the woods some place.

2001 Kawasaki KL650-A15 Carburetor | CyclePartsNation Kawasaki Parts Nation

I use 1/4" Tygon clear yellow fuel line from auto parts stores like Oreilly auto Parts. It is more flexible than the hard rubber stock line.
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Old 03-12-2017, 08:12 PM
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Quote:
Originally Posted by jeffrimerman View Post
It's a Gen 1 2001. I can email a pic if that helps but maybe you're right about the O ring. I googled but didn't see anyone stating. I should search in here.

Found a helpful youtube video someone on here posted in 2016.

pic of my carb
jeff,
From what I can see in the pic, I would be more concerned about the Fitment of the Black Rubber Air Duct and its clamp on the bell-mouth of the carburator. It does Not Look like it is Fully/Properly attached onto the carb. Which could allow dirty air into your engine.
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pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 84,000+ miles & counting
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Old 03-12-2017, 09:11 PM Thread Starter
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Quote:
Originally Posted by pdwestman View Post
jeff,
From what I can see in the pic, I would be more concerned about the Fitment of the Black Rubber Air Duct and its clamp on the bell-mouth of the carburator. It does Not Look like it is Fully/Properly attached onto the carb. Which could allow dirty air into your engine.
So the black line running from the bottom of the carb upward isn't a fuel line but an air duct line. Then for sure the gas must be coming from the carb right? I was thinking it was odd that a fuel line had the ability to rotate.

Thanks GoMotor for that info. I better make sure I keep some tools with me on a journey in case I do break something.
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Old 03-12-2017, 10:00 PM
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Quote:
Originally Posted by jeffrimerman View Post
So the black line running from the bottom of the carb upward isn't a fuel line but an air duct line. Then for sure the gas must be coming from the carb right? I was thinking it was odd that a fuel line had the ability to rotate.

Thanks GoMotor for that info. I better make sure I keep some tools with me on a journey in case I do break something.
No. The black rubber tube with white lettering on it in post #7 is the fuel line from the gas tank to the carburetor. The black plastic elbow it connects to on the carburetor does appear to be moist/dirty, but the moisture does not appear to be going downward on the fuel line. It appears to go up and to the left. I would squirt/clean it with carburetor cleaner and see if and where it reappears. That elbow can rotate because it is just pressed into the carb and sealed with two o-rings.

I think pdwestman is talking about 2 inch rubber connector hose clamped to the rear of the carburetor bringing in air from the black air/filter box.
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Old 03-12-2017, 11:56 PM Thread Starter
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Originally Posted by GoMotor View Post
No. The black rubber tube with white lettering on it in post #7 is the fuel line from the gas tank to the carburetor. The black plastic elbow it connects to on the carburetor does appear to be moist/dirty, but the moisture does not appear to be going downward on the fuel line. It appears to go up and to the left. I would squirt/clean it with carburetor cleaner and see if and where it reappears. That elbow can rotate because it is just pressed into the carb and sealed with two o-rings.

I think pdwestman is talking about 2 inch rubber connector hose clamped to the rear of the carburetor bringing in air from the black air/filter box.
Ok duuuuuuhhh, I can't believe I missed that. Now it makes perfect sense what he said. I wasn't even thinking about checking that but since the previous owner did mention doing the 22 cent mod who knows if he attached things right. I'll check that asap. Thanks
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