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Leaking Tank Petcock?

Started by humangod, April 09, 2016, 07:05:51 PM

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humangod

I've had my tank off and sitting on my workbench while I took care of other issues with my bike. The tank was almost full of gas so very heavy. I had the tank sitting rightside up, so it was resting on the tank petcock outlets. Now that I've put the tank back on, when I open the petcock valve, fuel runs all over. It seems to be coming from above the hose connection, where the brass outlet goes into the petcock chassis.

Did I break the petcock by resting the gas tank on it? Is this an easy fix?

TheGreenWeenie

I would definitely check. Could just be you nudged it loose. if it is completely trashed, petcocks aren't too expensive. What we hope didn't happen is bending the metal on the tank around where the petcock seals.  let us know what you find out.

1996 GS 500E
2016 XSR900

ShowBizWolf

I'm not sure if resting the tank on it would have caused damage but maybe...! Because I'd guess they aren't designed to support much weight or stress  :dunno_black:

A few years ago I had a leak right there that just wouldn't go away. No matter what I tried, it would always end up damp with fuel. I figured it was due to age... and also I had no idea how many times the tank was moved around, taken off, etc over its lifetime... so I ended up just ordering a new petcock (I think I got one off of ebay) and replacing it. Super easy !!
Superbike bars, '04 GSXR headlight & cowl, DRZ signals, 1/2" fork brace, 'Busa fender, stainless exhaust & brake lines, belly pan, LED dash & brake bulbs, 140/80 rear hoop, F tail lens, SV650 shock, Bandit400 hugger, aluminum heel guards & pegs, fork preload adjusters, .75 SonicSprings, heated grips

humangod

False alarm. The fuel hose isn't sealing around the shorter outlet so fuel spurts up out of the top of the hose (in a place that I wasn't seeing) and then gives the illusion that it is running back down. I used a small needle nose vice grip to clamp the hose and the leak went away.

On another note, I do not understand why the factory doesn't give an extra 2 inches of hose. I don't understand how they even got the hose on to begin with. It took me 45 minutes of cussing and struggling to get them back on. The one leaking is just barely on.  To the auto parts store tomorrow to replace ridiculously short fuel hoses with reasonable length ones...

TheGreenWeenie

Quote from: humangod on April 09, 2016, 07:37:39 PM
False alarm. The fuel hose isn't sealing around the shorter outlet so fuel spurts up out of the top of the hose (in a place that I wasn't seeing) and then gives the illusion that it is running back down. I used a small needle nose vice grip to clamp the hose and the leak went away.

On another note, I do not understand why the factory doesn't give an extra 2 inches of hose. I don't understand how they even got the hose on to begin with. It took me 45 minutes of cussing and struggling to get them back on. The one leaking is just barely on.  To the auto parts store tomorrow to replace ridiculously short fuel hoses with reasonable length ones...

theres a special little passage on the OEM airbox where i think it passes through. if you don't use that pathway you will probably have some words. replace your fuel lines and give yourself the extra room. plus you can use clear and it will look cool as shaZam!.

1996 GS 500E
2016 XSR900

ShowBizWolf

+1 for clear !!

Also, I couldn't agree more about how they can be a struggle to get back on. The two outlets are sooooo close together and it's like jeeeeeez Suzuki why'd ya hafta put them like this? ?
Superbike bars, '04 GSXR headlight & cowl, DRZ signals, 1/2" fork brace, 'Busa fender, stainless exhaust & brake lines, belly pan, LED dash & brake bulbs, 140/80 rear hoop, F tail lens, SV650 shock, Bandit400 hugger, aluminum heel guards & pegs, fork preload adjusters, .75 SonicSprings, heated grips

user11235813

#6
I recently put on new OEM fuel lines and I've had no problem at all with the lengths or the fitment. They are über expensive and they are different sizes at each end.

It's best to leave the fuel lines attached to the tank. If you take the tank off then undo the hoses at the frame petcock and pull them through with the tank when you remove it. Reverse this when installing the tank, attach the hoses to the tank, then rest the tank on the frame and thread the hoses back down and put the tank on finish by attaching the hoses to the frame petcock. You can also pull the tank vent hose up so you have more room to attach that because you do that once the tank is back on, just lift the tank up a bit and jam your hand in to reattach it.

You'll also need to remove the frame petcock to make all this easier.

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