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Fuel Pump Corrosion

581 Views 3 Replies 3 Participants Last post by  1crock
Folks,

I need a bit of advice. I’ve finally got around to fixing my TLS following my ‘off’ last year. I’ll post up some picture of my progress in the near future.

The plastic repairs are all but done and I’m hoping to get all the body parts to the painter this weekend. Last night I drained the fuel tank and in the process of this realised that I had quite a bit of material rattling around inside. This turned out to be rust scale.

So I pulled the fuel pump out just to see how bad things were. I should say that the bike is 1997, but the warranty tank wasn’t fitted until 2006. As a far as I can recall I also have the most recent tank gasket (also fitted in 2006). The source of the corrosion was the bottom half inch or so of the fuel pump, which I assume has been caused by water lying at the bottom of the tank.

I then cleaned everything up. Despite the amount of rust in the tank the bottom of the pump has very little pitting or wasting. There is also a small amount of surface corrosion around the tank opening but nothing structural. The tanks gasket looks like new.

So I’m looking some advice as to how I could treat the tank and pump to either prevent a reoccurrence or at least slow the progress of the corrosion.

Thanks in anticipation.
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swill a little phosphoric acid around inside and drain it and let it dry

keep the tank fueled and occasionally put some methylated spirits in the tank 200ml to absorb any water
swill a little phosphoric acid around inside and drain it and let it dry

keep the tank fueled and occasionally put some methylated spirits in the tank 200ml to absorb any water

Thank you for the very prompt reply!

Just to clarify, the phospophoric acid is for the corrosion, and then fresh (water-free) fuel to prevent any further corrosion?

I like that tip on metylated spirits to absorb the water.

Thanks
:yes, the acid will convert any rust (iron oxide) into an inert substance (iron phosphate). You'll need to keep the inside of the tank wet for a while though to make sure the chemical reaction is complete. :thumbup
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