Nightmare gas tank! - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 28 (permalink) Old 02-14-2014, 01:06 PM Thread Starter
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Nightmare gas tank!

Just pulled my gas tank, and I'm sad.

The PO failed to kreem it right and I can see huge chunks of kreem/rust in the tank.

What should I do? Lots of abrasives and a super shake? Should I cut/weld it?

Also, how does the petcock work? I see two outlets to carbs, a smaller middle outlet, a long inlet tube w filter, and An open hole next to it. When I apply oral vacuum (lol) to either of the carb outlets, I get nothing. Same for the middle outlet. Blowing thru the filter blows out the hole directly next to it.
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post #2 of 28 (permalink) Old 02-14-2014, 01:20 PM
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For the Kream get that junk out of their... ball bearings seam to work good, fallowed by media blasting.

The middle port of the petcock is vacuum, the other two ports go to the carb inlets.
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post #3 of 28 (permalink) Old 02-14-2014, 01:24 PM
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Quote:
Originally Posted by Nadan8 View Post
Just pulled my gas tank, and I'm sad.

The PO failed to kreem it right and I can see huge chunks of kreem/rust in the tank.

What should I do? Lots of abrasives and a super shake? Should I cut/weld it?

Also, how does the petcock work? I see two outlets to carbs, a smaller middle outlet, a long inlet tube w filter, and An open hole next to it. When I apply oral vacuum (lol) to either of the carb outlets, I get nothing. Same for the middle outlet. Blowing thru the filter blows out the hole directly next to it.
The petcock is vacuum actuated. Fuel won't flow unless the third outlet has lower pressure. Inside there should be TWO tubes with filters. One is shorter (that's the reserve)

You likely need to totally clean out the tank or replace it.

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post #4 of 28 (permalink) Old 02-14-2014, 01:43 PM Thread Starter
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I plan on cleaning it, I'm just curious what J should start with. No sense in filling with chemicals if it won't get the huge rusty chunks out
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post #5 of 28 (permalink) Old 02-14-2014, 01:55 PM
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Sulfuric acid (battery acid) will eat out the rust, but first you need to remove the Kream
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post #6 of 28 (permalink) Old 02-14-2014, 01:59 PM Thread Starter
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And the best way to do that?
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post #7 of 28 (permalink) Old 02-14-2014, 02:22 PM Thread Starter
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Stopping by home Depot later to pick up 1 gallon (should I get 2?) of acetone. I have tons of sharp metal things in the garage. Duct tape too. I'll just fill it, let it sit upright for 24hr, upside down 24hr, shake a lot, repeat twice more, dump and rinse, repeat all once.
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post #8 of 28 (permalink) Old 02-14-2014, 02:25 PM
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a couple gallons of Acetone wouldn't hurt... as for the Acid... you fill the tank all the way up with acid, then let it sit for about 3 hours, check on it, and if the rust has been removed, dump it out into a glass container and rince with water fallowed by acetone... if the rust is still there let it sit for another hour, and keep checking until the rust is mostly gone... just be careful, the acid can and will eat through the rusted out spots if it sits too long.
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post #9 of 28 (permalink) Old 02-14-2014, 03:01 PM Thread Starter
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I'm going to follow the Muriatic acid sticky
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post #10 of 28 (permalink) Old 02-14-2014, 07:47 PM
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I had a crappy Kreme job in the Harley tanks I bought....first came a long screwdriver to peel off what I could, then shook it out....some pieces were really large too....I finished it off with some copper BBs, and the tanks set on my hardware store's paint can shaker, lol...

Dunno why the PO put Kreme in it anyway, was hardly any REAL rust...



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