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Discussion Starter #1
My new 2000 gen 1 has a rusty tank. I'm going to clean it with a vinegar soak (I also have a gallon of evapo-rust I'm considering).

I've removed all gas, should I take off the vacuum petcock before de-rusting or OK to leave it on?
 

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I've just been doing this for a pal(At least a compressed air and fuel flush) and you should take the Petcock off. In his case I fitted a new one as the old one's filter had decayed so much it fell off when moved and I didn't trust state of the Vacuum Membranes. I also fitted an inline fuel filter under the tank.

I didn't want to damage or remove the low fuel warning device hence I just used compressed air and a fuel slosh.


HTH :)
 

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Discussion Starter #3
Thanks! Any sense of whether the low fuel warning device will get damaged by vinegar or evaporust?
 

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Thanks! Any sense of whether the low fuel warning device will get damaged by vinegar or evaporust?
I can't answer that and hence my post. It would be safer to take the unit out but as the tanks are old I didn't want t disturb it. I'm afraid it's,"Dealer's Choice" :/
 

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I cleaned an SV tank with several gallons of white vinegar and replaced the vacuum petcock. I didn't pay attention to the low fuel warning sensor and I believe I killed it. It used to work. I don't remember if it worked right before the wash. But it doesn't work now. So I would remove it prior to cleaning if I do it again.
 

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My fuel level sensor needed replacing after an oxalic acid bath. Maybe aluminum foil or gasket material under the petcock would seal it without ruining the diaphragm.

Also consider coating it, I cleaned my tank 2-3 times with vinegar before giving up and using one of the epoxy types.
 

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Discussion Starter #7
In the end I removed the petcock and the fuel sensor, both of which were very easy to remove. I also made a great stopper using the petcock screws through a piece of metal and a piece of bicycle innertube underneath - worked like a charm
54040
 

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In the end I removed the petcock and the fuel sensor, both of which were very easy to remove. I also made a great stopper using the petcock screws through a piece of metal and a piece of bicycle innertube underneath - worked like a charm
Great. I would still fit an-inline filter just to be safe and they are easier to keep an eye on and replace. I got 5 for 5 beer tokens off FleaBay + some 10/11mm diameter pipe clips. Only trouble I had was the New Petcock fuel spigot was wider than the original so I heated up the pipe-end with a Hairdryer to make it pliable enough to get on and then clip.

 
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