Question about 2002 Harley Davidson XL Sportster 883

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Gas leaking from the vent tube on the gas tank

Recently purchased a 02' 883 Sportster that sit for years, got it started but gas is coming out of the standpipe nozzle underneath the gas tank, that connect to the vapor valve, the hoses are also cracked but what can caused the gas to come from the vent?

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  • 665 Answers

The standpipe sits in the tank and connects the filter "sock". The only vents, or overflows, should either be from the carburetors (overflow) or vacuum vent (typically found on dirt bikes) on gas lid. You should have no lines that directly "vent" from the tank. It is possible you have the wrong tank installed on the bike. Just a suggestion. ^^ I hope this helps.

Posted on Apr 17, 2014

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: I have a 2000 1200 custom sportster. It leaks oil

if the oil tank is above the crank case, inspect the oil pump check valve. go online and study the check valve's functional purpose and see to it that the vale is operating properly. it should not be an expensive fix.
if you reroute hose be carefull of rear tire annnd what does the oil level in the oil tank sit at when full and after the leak happens after -say a day of riding- a week  

Posted on Mar 26, 2009

  • 1 Answer

SOURCE: I have an oil leak it looks like it could be

i have the same problem and found out today what it is. Its a recalled hose that has a P shape to it and the oil is getting stored in the dip area of the hose then will get blown out leakin on the areas you stated.
I asked how to fix it and the dealer didnt have an answer other than to cut it about 3" or move it around so the oil wont get stuck in the dip area.
I havent tried to move anything yet, as I just tore it down and put it all back together before going to the HD shop and asking.

Posted on Sep 13, 2009

  • 132 Answers

SOURCE: gas leak

It could be from the gasket on your fuel tank float.

Posted on Jan 30, 2010

wd4ity
  • 4565 Answers

SOURCE: gas is leaking from the peacock valve under my gas

There's a gland nut that holds the petcock into the tank and pulls it up against the seal. Try tightening the nut. But, in all probability, it's the vacuum diaphragm in the backside of the petcock.

Harley went to a vacuum operated petcock in 1996 and they've been a pain ever since. The diaphragm gets a small hole in it and leaks gasoline or quits opening leaving the rider stranded.

Now, You can repair the petcock if you wish. Get a large funnel and an empty gasoline can. Loosen the petcock and allow the fuel to run out around the nut, catching it in the funnel and directing it into the gas can. Once empty, take the fuel line and the vacuum line off the petcock. The vacuum line is the small line on the backside. Take the petcock out of the tank. Look on the backside and there are four small screws. Take them out and carefully take the back plate off the valve. You'll see a diaphragm, a spring, and needle. Take the diaphragm and hold it up to the light and gently stretch it. You'll probably find a hole. You can get a replacement diaphragm from you local dealer. Reassembly is the reverse of disassembly.

Personally, I'd rather replace the vacuum operated petcock with a high quality manually operated petcock such as Pingel. The OEM petcock will fail on you and leave you stranded with a full fuel tank and an empty carburetor. The Pingle won't. Just install it, connect the fuel hose, and plug the vacuum hose.

Good Luck
Steve

Posted on Sep 13, 2010

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Sounds to me like your float valve is obstructed by some debris. This is causing it to stay open and leak fuel. Better it leaks to your vent hose than it leaks in your engine and contaminates your oil.

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Unless Harley has changed something, I'm not familiar with a vent tube on the left side of a Sportster. I've always seen the vent tube coming out of the cam chest on the right side of the bike. Even the transmission vent came up and over to just behind the oil tank.

On your Sportster, make sure that you're not overfilling the oil tank. There are two lines on the dipstick. When checking your oil, the top line is 'FULL HOT" and the lower line is 'FULL COLD". Keep the level between the two lines when hot. As long as you can see oil on the dipstick, ride the bike far enough to heat up the oil and then check the level.

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