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Discussion Starter · #1 ·
82 gl1100 standard, new to me last summer. I turned it into an interstate with fairing, bags, etc... all done except paint pretty much.

Just for some history, bike sat a long time before i acquired it. I cleaned carbs, rebuilt the front & rear brakes, rebuilt forks with new seals, bushings, and progressive springs. Changed all fluids, plugs, wires, grips, timing belts, and rebuilt the fuel petcock along with new fuel filter and hoses.

Fuel mileage at first was low 30's but has improved alot with each tankful of fuel. Bike runs very well now. I just rode home from work and noticed i had 205 miles on this tank and still had 1/4 tank left...havent calculated yet but i think im up where i should be now.

Anyway, heres my question......today when leaving work, i turned my fuel petcock on and got sprayed with fuel, hose was fuel-soaked...wtf??? Dried real quick so i started it up, checked again for leaks (none) and rode it hime...ran great!!!

Any ideas??? Ill look again for the obvious but seems strange to me...new petcock, hoses, etc...just got a shot of fuel when i turned it on to ride home...i always turn my fuel off unless im riding and its never happened before. I just got home so ill go through it closer just wanted to post to see if anyone had any ideas??? Thanks
 

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the valve seal is probley worn. when you rotated it around to turn on you applyed enouph side pressure on the seal to make it leak. tank hot and pressurized frome the sun. rebuild or replace valve .
 

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Discussion Starter · #3 ·
the valve seal is probley worn. when you rotated it around to turn on you applyed enouph side pressure on the seal to make it leak. tank hot and pressurized frome the sun. rebuild or replace valve .
Well, if you see above, the petcock is rebuilt. It was a kit from Randakk last fall right before winter. I doubt it s 3000 miles on it. I have since poked, pried, grabbed, and cant duplicate it. Randakks seal is viton. If its already wore out, im going to have to rebuild it alot. Thats why i was shocked when it happened. The petcock seal is new, hises, filter, everything.....that viton seal should be the strongest part in my fuel system...gonna have to keep an eye on it.....maybe pull it apart and check iy but wow!!!.....hmm...
 

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Are you using motorcycle gas and not car gas? :ROFL:
 

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I bought the kit and was about to install then I started opening gas cap on hot days before ride. releases pressure, no leak.
 

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My bet is that your cap is no longer venting pressure off as it sits and warms up. Next time you get on her when its hotter than when you parked open the cap and listen for a whosh of the pressure inside escaping. If you do drill a very small hole through the top of the cap all the way into the small cylinder underneath the flange.

I got this tee shirt already.

Hop this helps.
 

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Discussion Starter · #8 ·
Thanks guys....it. was the petcock, just my screws holding it together worked their way loose. I used randakks petcock rubber and had to drill out the rivets and tap it for screws...its tight and no leaks now...sounds like I may need some red loctite?

Oh, and I thought my cap was venting fine after going through this thing last year but it does seem to be pressurizing when parked in the sun. Time to soak the cap again and possibly make my own vent.

Thanks again guys!!!
 

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FYI the cap is supposed to hold pressure.
 

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Discussion Starter · #10 ·
thanks Dave, wasnt sure....makes sense, lets air in as your using fuel but not out. Awesome!!! Should be good to go.
 

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FYI the cap is supposed to hold pressure.
OK but how much. My petcock o-rings got blown out but stopped leaking after I removed the cap. I have to think its supposed to vent off presure at some point. THANKS!!!
 

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I disagree with some of the above. Your fuel cap should vent air out and in with a small amount of pressure each way. I cleaned mine by placing it upside down and filling it with Walmart Super Tech Lubricant (or WD40) to soak overnight and then blowing out with compressed air. Lots of crud came out and my cap now goes "fizz" instead of "whoosh" when I take it off. That high pressure (or strong vacuum) should not be in your tank and it is finding the weakest point in your system.

Scott
 

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I disagree with some of the above. Your fuel cap should vent air out and in with a small amount of pressure each way.
A fuel tank never vents air, they are fuel vapors and bad for the enviroment not to mention stinking up your garage and in the extreme could reach concentrations which would be an explosion hazard. Would you like to be in an underground garage with 100 cars holding 2000 gallons of fuel all venting their vapors to atmosphere.:ROFL: These aren't a lawn mower holding 15 ozs. with the familiar hole in the center of the cap from Leave it to Beaver.

Every vehicle on the road for the last 30-40 yrs. has been under the scrutiny of EPA and SHED emissions are but one component.

Fuel tanks are designed to hold vapors within or vented to an external containment system to be burned later.
 

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Nah, my 1986 GoldWing's gas cap has a VENT. :ROFL:Maybe yours isn't working, but mine is.

Scott
 

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Many tanks, even newer tanks, are vented to the outside atmosphere without any type of valve at all. Tanks have vents!!!! This is ridiculous!!!! Isn't there any moderation on this forum to stop the level of wrong information that goes on here?

Scott
 

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This is ridiculous!!!! Isn't there any moderation on this forum to stop the level of wrong information that goes on here?

Scott
Since you're the smartest guy on the forum, likely the internet, possibly the world and you're never wrong, why not apply for the job? :?

With only 1,811,425 posts on this forum it should only take you an hour, possibly two, to go through them all correcting any misinformation.:claps::claps::claps:
 

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Isn't there any moderation on this forum to stop the level of wrong information that goes on here?Scott
If that were the case, they'd have to delete half of your posts. Maybe even a couple of mine (mind you, just a couple)
FYI. No tank is designed to vent to the atmosphere any more.
They are designed with any number of evaporative devises to TRY to collect and re-burn fuel vapors.
However, there must always be a fail-safe were fuel is concerned. (fuel pump relay, roll over, or angle sensors, etc)
Gas caps are vented. They have a positive and a negative release pressure incorporated into them. Much like the radiator cap.
So caps are vented to the atmosphere, tanks are not. But only as a matter of safety.
I just did you a favor. This is one post you won't have to correct.
 

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FYI. No tank is designed to vent to the atmosphere any more.
They are designed with any number of evaporative devises to TRY to collect and re-burn fuel vapors.
I thought this thread was about a thirty one year old Goldwing.:?
At that time and several years after Goldwings with the possible exception of California models had no vapour recovery. The tank was directly vented to atmosphere through the filler cap after the tank pressurized more than a couple of pounds.
 

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This sure is a fun forum. Thank you Good Looking Honda guy and Ken for those last posts. Don't get me wrong there is a lot of good information here, I've found it and read it often. Just "once in a while" someone gives the last word that happens to be the wrong word. Please keep up the good work. emoticon inserted here.

Scott
 
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