Leaking Tank

3 replies to this topic
  • dirtdynamics

Posted March 04, 2003 - 08:39 PM


I'm pretty sure i saw this thread but i can't seem to find it.
If anybody can post the link to me or help me out,
i'll appreciate it.

I have a leaking '98 WR400 tank.
It seems to leak near the petcock area.
I have heard that there is a method called plastic weld?
Am i mistaken?
I have tried to use all purpose epoxy but eventually, the petrol eats through it.
I even had the area sealed with silicon and followed that with more epoxy but it still failed after a few days.

I have moved to using a YZ tank but i need more range i guess so i may need the tank again.
How can i save it?
Or is there another ugly large(IMS) tank that was saved that needs a new home?

  • yamaha.dude

Posted March 04, 2003 - 09:20 PM


You can weld the tank up, but it may pay to get a professional to do it, rather than learning on that one... Look in the phone book, often they work with smash repair places to weld bumpers and dashboards back together...



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  • dirtdynamics

Posted March 04, 2003 - 11:04 PM


Thanks for the tip.
I'll have to try that.

  • emcdan

Posted March 05, 2003 - 06:38 AM


Ive had a leaking tank. Ive tryed everthing except a plastic welding outfit. I was pressed for time and desperate awhile back, so I used a soldering iron and small strips of matching plastic from an old fender as a feed. This leak was around the petcock also. I melted the crack slightly while feeding the plastic. I put two coats on and even sanded it. It worked very well. I think the trick is to make sure the fabricating area is melted togther, if that makes sense. Nothing adheres to a plastic gas tank and prevents leaking. This is still holding up well. I have tryed J B weld, plastic epoxies, superglue, Napa's plastic gas tank leak fix, duct tape and chewing gum with a little spit. Try the soldering iron before dropping some big bucks on a new tank. Just make sure the tank is dry dry dry. Working around that petcock hole is a perfect fuse area for a gas tank cannon...he he he


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