Cleaning inside gas tank

Max777 · 04-11-2010, 02:29 PM

call a few radiator shops, ask them if they have a boil tank that can take care of gas tanks.... cheap and easy to do...

Muratic acid is not recomended for big gas tanks, works better on motorcycles and moped style tanks.

N.RotaryTech · 04-11-2010, 08:36 PM

So I dropped the fuel tank.
I wish I took better/more pictures (will post up sometime this week), cause this was awful.

So the tank had a layer of brown gunk coating the insides.
The rectangular little basin right under the fuel pump, had maybe an inch or 2 of this brown gunk in it.
It was so bad, I put the fuel pump back in, and it wouldn't seat on the tank, i had to wiggle an push on it for it to seat.
So the bottom of the fuel pump must have been sitting on the pile of gunk.

Its all out of there now.
You can actually see metal now.
And the walls/separations are not rusted through.

I 1st flushed it with water from the garden hose, then put purple power through it, then flushed with water again, finally flushed with a quart of acetone.

Putting the tank back in was a pain.
But I got it done.

I think I actually felt more power when I drove it. ha ha ha.

N.RotaryTech · 04-12-2010, 07:09 AM

Yeah, that brown gunk came out of the tank. There was chunks actually.

The inside.

04-11-2010, 02:29 PM	#1
Max777 Pirate Join Date: Mar 2008 Location: Central IL Posts: 1,323 Rep Power: 19	call a few radiator shops, ask them if they have a boil tank that can take care of gas tanks.... cheap and easy to do... Muratic acid is not recomended for big gas tanks, works better on motorcycles and moped style tanks. __________________ Rotaries:They are NOT that complicated!

04-11-2010, 08:36 PM	#2
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC Posts: 552 Rep Power: 18	Sludge factory. So I dropped the fuel tank. I wish I took better/more pictures (will post up sometime this week), cause this was awful. So the tank had a layer of brown gunk coating the insides. The rectangular little basin right under the fuel pump, had maybe an inch or 2 of this brown gunk in it. It was so bad, I put the fuel pump back in, and it wouldn't seat on the tank, i had to wiggle an push on it for it to seat. So the bottom of the fuel pump must have been sitting on the pile of gunk. Its all out of there now. You can actually see metal now. And the walls/separations are not rusted through. I 1st flushed it with water from the garden hose, then put purple power through it, then flushed with water again, finally flushed with a quart of acetone. Putting the tank back in was a pain. But I got it done. I think I actually felt more power when I drove it. ha ha ha. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

04-12-2010, 07:09 AM	#3
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC Posts: 552 Rep Power: 18	Pictures. Yeah, that brown gunk came out of the tank. There was chunks actually. The inside.