ST1300 - Rust in Petrol Tank

[HelloEveryone]

Changing a new fuel pump assembly that comes with petrol filter etc and saw the condition of the rusted sub tank.

Negligent from previous owner either allowing slight rain water seepage into petrol tank from tank cap or not filling up the petrol tank in storage and over the years, this is what happens.

Decided to order a new sub petrol tank and main tank and time to service all injectors, new fuel line and time to service throttle body etc

 

[Rockstar]

Personally. I'd also change the Lower Tank (it's constantly fed fuel by the upper tank via the elbow hose (in first pic)

I'd remove the upper tank Float level (4 nuts) to verify it has any rust in it?
before ordering/painting a replacement tank. (highly unlikely? surely possible?)

Did the bike run before you tore it down?

 

[HelloEveryone]

Personally. I'd also change the Lower Tank (it's constantly fed fuel by the upper tank via the elbow hose (in first pic)

I'd remove the upper tank Float level (4 nuts) to verify it has any rust in it?
before ordering/painting a replacement tank. (highly unlikely? surely possible?)

Did the bike run before you tore it down?

Managed to got a new Main Tank (White) with original Honda emblems and a new sub tank.

Yes surprisingly with all the rust, it runs pretty well. That’s Honda built quality even under these conditions

I think the fuel pump filter did a good job in the petrol filtration.

Luckily I decided to change the fuel pump assembly to have noticed these.

 

[motornut]

I have "cleaned" tanks by putting clean gravel into them and rolling them, I am cheap that way and some tanks can get to be a bitch to find.
Wish I could get my hands on your old ones. They would be fun to airbrush.

 

[SMSW]

Wish I could get my hands on your old ones. They would be fun to airbrush.

Next time you happen to find yourself in Singapore.....

 

[HelloEveryone]

I have "cleaned" tanks by putting clean gravel into them and rolling them, I am cheap that way and some tanks can get to be a bitch to find.
Wish I could get my hands on your old ones. They would be fun to airbrush.

Too far away and items too large the shipping cost may not be worth jt

 

[HelloEveryone]

New Sub-tank and fuel pump assembly finally in with new fuel lines etc

O-rings for the fuel injectors and FPS fuel pressure sensor

Throttle body spanking clean too now

 

[jgalda]

I just repaired the same problem using POR 15. The lower tank was a complete mess. To reduce the amount of POR 15 I needed, I filled the lower tank with golf balls. Used two 1 Quart jugs diluted 50% with water. Completely filled lower tank with solution and let sit for 24 hours. The results were impressive. Then replaced fuel pump and filters with Kit from Quantum. Performance has been restored and no more intermitend fuel starvation issues. One cautionary note. The metal seal on the top of lower tank is easily bent and can cause leaks when reintalling the Pump and filter tree. Use caution not to bend that seal flange.

 

[Sadlsor]

As a reminder, be sure the fuel hoses you install are actually rated for submersion in gasoline.
Some rubber lines will deteriorate in fuel.
Likely you already know that.

 

[SMSW]

Did the POR 15 treatment affect the performance of the golf balls? If so, and depending on the effect, you might have discovered a new way to cheat at golf.

 

[SupraSabre]

BTDT!

I had "cleaned" my 04's lower tank, only to have it re-rust on me. So I replaced it and the fuel pump. It's been running good for the last three years now. And when I know it will be sitting, I've been putting non ethanol gas in it and my 2012.

 

[SMSW]

BTDT!
I had "cleaned" my 04's lower tank, only to have it re-rust on me.

Bob, Did you use POR or a similar product?

I've used POR and found it's cleaning stage doe a pretty good job of etching the steel down to bare metal, (just like Ophospho treatment). The second stage uses a vile smelling coating that seals the metal. Having been there w/ POR, I'd guess that prep, as usual, is mostly all, because the coating process is also vital. If you miss a spot, the coating will not protect the metal well and might not stick.

 

[SupraSabre]

Bob, Did you use POR or a similar product?

I've used POR and found it's cleaning stage doe a pretty good job of etching the steel down to bare metal, (just like Ophospho treatment). The second stage uses a vile smelling coating that seals the metal. Having been there w/ POR, I'd guess that prep, as usual, is mostly all, because the coating process is also vital. If you miss a spot, the coating will not protect the metal well and might not stick.

No, I used a rust remover, but I let the bike sit again for quite awhile. When I got back to it, I replaced the lower tank and the fuel pump.

That's in my 2004 , and I've kept it on the road since.

 

[Joeywhat]

Evaporust works very well at removing rust. It does require that any loose rust be removed first, so if its really bad you'll need to find a way to do that.

Vinegar also works very well at removing rust. Unless the tanks had holes or were REALLY bad, just cleaning the rust makes more sense.