Tank appeared clean, but it won't run...

[doug hodder]

One of the awards for the IRG appeared to have a nice clean tank when I shined a flashlight into the tank...but once fueled...it ran crappy! It would kinda run, then flood and get a nice yellow sooty flame, then kick back to normal.

I dumped the fuel through a paint strainer and this is what I found. Not rust, but it appears to be a varnish from old fuel in the tank that lifted once new fuel got into the tank. I guess the lesson here is don't be fooled about the interior of the tank till it's completely cleaned. Tore it apart again, cleaned out the innards, and it runs great now...and to think that the bottom of the tank looked so nice and shiny.

I could be wrong about what it is exactly, but it's not metallic, based on the magnet. Who knows what someone put through it for fuel though. Word to the wise...clean your tanks! Doug

[Ratkity]

That looked like blood at first! LOL.

Glad you got it running!

Hugs,
Ratkity

[starleen2]

been "caught" like that before! Now I break out the BB's for a quick shake in the fount, rinse, repeat, rinse, repeat - done

[Dean in Eureka, CA]

Wow Doug,
You sure have put in a lot of work and effort... You Da Man!!!
I've just about got the globes ready to do a light dusting... Two more to cut the resist out on.
My eyes sure aren't what they use to be, or I need stronger glasses...

[WarPony]

been "caught" like that before! Now I break out the BB's for a quick shake in the fount, rinse, repeat, rinse, repeat - done

Yip, what preacher man said

Jeff

[Steve_Cox]

It is "varnish" someone probably let the tank evaporate dry at some time. I get that stuff all the time on boat gas tanks. I liked the BB method of cleaning, ingenious

[G-force]

Be carefull putting bb's or other things in a tank. A handfull of nuts and bolts has been a standard for cleaning the inside of motorycycle gas tanks for yeas. Works good untill I tried to get them out! The fill neck had a flange around it so you could not dump them out and the were too big to go through the petcock valve hole! Ended up picking the out, one by one with those springloaded mechanics "fingers." So, the solution is a short length of small chain, keep one end out and bingo, its easy to pull out. However, be carefull, I tried this trick with an old Coleman gas lantern and the chain got hung up on the pressure pump tube on the inside!

[teardrop_focus]

If whatever media you're using to help scour the inside of a fount or a tank is ferrous and becomes trapped by a filler cap neck flange or whatever, you can always use the magnet-on-a-stick media removal program.



That last BB is always a challenge to shake out. As much so as trying to shake a pic out of a guitar (which seems easier).

[hotrod]

If whatever media you're using to help scour the inside of a fount or a tank is ferrous and becomes trapped by a filler cap neck flange or whatever, you can always use the magnet-on-a-stick media removal program.



That last BB is always a challenge to shake out. As much so as trying to shake a pic out of a guitar (which seems easier).

Im glad my bow doesnt fit inside my fiddle....lolololol