coating in gas tank
- Thread starter mooney
- Start date
toomanybikes
not enough time 4 riding
You need to reline the tank (or have someone do it). Getting all of the old lining out is the hard part, using one of the available products to reline is not bad.
Check this thread for some more information
http://www.bigdogbiker.com/forums/technical/19122-fuel-tank-sealer.html
Check this thread for some more information
http://www.bigdogbiker.com/forums/technical/19122-fuel-tank-sealer.html
:lol:
I have just discovered that the same thing is happening (amongst other bad things) to my 2008 Mastiff 
Why the hell did BDM keep pouring that shit in their tanks?
No one used any tank liner prior 1970 and all was good (not perfect). With more and more ethanol in today's fuel there should NOT be any water sitting on the bottom of any tank should it?
BTW looking in my EFI tank (large hole on the underside) the lining was mainly
on topside, a bit on side walls and nothing or next to nothing on the bottom.
Sorry guys I needed to went a bit!
I have put only a couple of hundred miles on my bike since I bought it last December (I work away from home) apart from riding it home from the seller
(600 miles) and a lot of things are going wrong. :angry:
The bike had only 6 000 miles on it when I bough it.
Why the hell did BDM keep pouring that shit in their tanks?
No one used any tank liner prior 1970 and all was good (not perfect). With more and more ethanol in today's fuel there should NOT be any water sitting on the bottom of any tank should it?
BTW looking in my EFI tank (large hole on the underside) the lining was mainly
on topside, a bit on side walls and nothing or next to nothing on the bottom.
Sorry guys I needed to went a bit!
I have put only a couple of hundred miles on my bike since I bought it last December (I work away from home) apart from riding it home from the seller
(600 miles) and a lot of things are going wrong. :angry:
The bike had only 6 000 miles on it when I bough it.
01Mastiff
Active Member
Ethanol absorbs water from the surrounding air. That's why all marine gas is ethanol free, and you want to use an ethanol treatment if you are going to let your bike sit for a long period of time. I made the mistake of using ethanol gas in my boat which has a water filter and after sitting for the winter, from a 30 gal tank, I took out a quart of water.
Dragonslave
Active Member
I just got through cleaning the old liner out of my tanks. I was having the same issues as Mooney. First bought my bike and rode for 1 week before encountering the liner flaking out of the inside of the gas tanks. Cleaned this up with a hand full of washers (make sure they a magnetic) in each tank, 1.5 gallons of N-Methyl-2-pyrrolidone (NMP), long mechanic grabbers (for large pcs that dont break down), and a wand with a magnet on the end to retrieve the washers. I work for a chemical company so I was able to test all kinds of stuff. I tried MEK = nothing, Acetone = nothing, Tetrahydrofuran = Nothing so I wouldnt waste time on these. The 2 that worked the best on breaking down this crap was NMP (mentioned above) and Methylene chloride. Now I know that most people wouldnt be able to get such things but Methylene Chloride is the active ingredient in paint stripper so that should work too. Anyway, when working with these chemicals be sure you have all you holes sealed up and WRAP YOUR TANK IN PLASTIC!! At some point during this process you will get it on the outside and without the plastic, your paint will be ruined. Take extra time doing this in the beginning before applying any chemical. I was extra careful and did not have any damage to my paint thanks to this. Also I tested the plastic and the chemicals, NMP or Methylene Chloride did not degrade the plastic. Shake the hell out of each tank while you have the chemical in them! I shook both of mine for 2 days and let them soak for another 1 day after that. Dump the chemical out and wash the tank with water and start fishing out all the washers you put in. Then flush with gas a few times and you should be good to go!
I forgot to mention pipe cleaners arent a bad thing to have while doing this too for cleaning out the fuel transfer nipples for 2 pc tanks.
I forgot to mention pipe cleaners arent a bad thing to have while doing this too for cleaning out the fuel transfer nipples for 2 pc tanks.
Believe me when I say, We understand. What a lot of new owners don't understand when they buy these incredible bikes is they are hot rods. This means shit is gonna go south if you aren't proactive with maintenance. Hang in there and keep fixing the issues and you'll end up with a Dog that will go as far as you want. jmo.