S4R metal fuel tank "leakage" - Ducati Monster Forums: Ducati Monster Motorcycle Forum
 
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post #1 of 4 (permalink) Old 09-21-2012, 12:43 PM Thread Starter
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S4R metal fuel tank "leakage"

2004 SR4 steel fuel tank "weeping" area of rear mounting plates pivot. The welded doubled up plates seeping fuel due to poor weld on the second / top plate (the one that is the actual earred plate). Quite apparently one of the top welds damaged one of the lower plate's spot welds sufficiently to cause a small hole in tank's outer shell...resulting in a slow seeping of fuel ! Drips onto rear exhaust pipe of course producing noticeable smoking at warm up.
Check area of rear tank pivot plates for any leakage and fix pronto !
Fixes: clean area of all paint and assure dryness even under the doubled plates w/judicious use of compressed air. Good old J.B. Weld should work well on a minor seepage. If not, the tank needs to be drained, removed from bike, stripped of all internals, blasted clean, resealed and refinished. Not a project for the faint of heart !
BTW I used J.B. Weld on all outer surfaces and a dab on the failed spot weld in tank's interior ( not easy to reach). Don't push your luck, repair any / all tank leakages pronto! Samir 6992
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post #2 of 4 (permalink) Old 12-18-2012, 06:22 AM
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Hi Samir
Havent been on here for a while, so sorry for late reply. I too had same problem this year on my 2003 S4R. At first I thought it was an oil leak as I had recently dropped my bike but then found out it was petrol from the tanks hinge. I looked into putting sealant in but someone had already done this and getting the old stuff out would be tricky. In the end I took it to a radiator/tank welders and they welded or braised it for £80. Not sure where you are but I'm up in Merseyside if you want there details I can pass them on to you. All the best.

Honda NC30, Suzuki SV650, Honda CBR1000F, Ducati Monster S4R
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post #3 of 4 (permalink) Old 12-24-2012, 11:04 AM Thread Starter
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Twin Twister...long way from ur locale, but thanx the info'follow-up! BTW my use of "J.B. Weld" cold epoxy as a sealant is holding rather well w/no leakage / minor weeping. My choice to avoid heat application in any repair attempt was simply to avoid any further spot weld damage/failures. Merry Christmas and the Best for the new year ! Samir6992
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post #4 of 4 (permalink) Old 12-27-2012, 03:47 AM
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Glad to hear your tank is holding up well, I'm just hoping for a nice few days to go out on the bike before work starts again : (
Wishing you all the best for the New Year

Honda NC30, Suzuki SV650, Honda CBR1000F, Ducati Monster S4R
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