Cleaning fuel rail?

rusty ol ranger · Nov 25, 2018

Well im gonna attempt my first quest into ripping apart EFI.

Gonna replace injectors as well as upper intake gasket, and intank pump.

Either way, if i pull the rail and its disgusting inside, like i suspect it is, whats the best way to remove the rust?

adsm08 · Nov 25, 2018

Muriatic acid bath, followed by a soak in clean water, and flush out with mineral spirits.

It will eat the rust, but won't attack clean metal. Lowes and Home Despot sell it as concrete cleaner. Make sure to cut it 50/50 with water or it will be too strong.

I would inspect it closely for pinholes after cleaning though.

Michael88STX · Nov 25, 2018

Be very careful with this muriatic acid, it can burn your skin off if you're not careful! I do professional power washing and we use this at work for rust stain removal. So I'd say a 50/50 dilution would suffice, honestly you could probably do like a 2 parts water to 1 part acid and be fine as well, just to avoid any accidents

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dirtymike · Nov 25, 2018

Thats some good advise. Rebuild the injectors, real simple. Replace the screens and O rings and power them us till the spray out clean. There is a thread here how to do it.

adsm08 · Nov 25, 2018

Michael88STX said:
Be very careful with this muriatic acid, it can burn your skin off if you're not careful! I do professional power washing and we use this at work for rust stain removal. So I'd say a 50/50 dilution would suffice, honestly you could probably do like a 2 parts water to 1 part acid and be fine as well, just to avoid any accidents

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^THIS^

I generally assume most people on this board are smart enough to know they need contact precautions with any type of acid, but yes, you want to avoid skin contact.

I was dipping some parts a few years ago and I used some dollar store dish gloves. They held up long enough, but ultimately did not survive, something rated for chemical contact would be better.

alwaysFlOoReD · Nov 25, 2018

Also, always add acid into water not the other way around. The chemical reaction that happens can cause splashing and it's safer to have water splashed on you than acid.

Michael88STX · Nov 25, 2018

alwaysFlOoReD said:
Also, always add acid into water not the other way around. The chemical reaction that happens can cause splashing and it's safer to have water splashed on you than acid.

Forgot to mention this, good catch. Avoid burning your eyes out whenever possible lol.

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Dirtman · Nov 25, 2018

Doesn't hurt to have a solution of baking soda & water around when working with acid. (I keep it stored with my acid). It neutralizes it quickly in the event of an oopsie.

rusty ol ranger · Nov 25, 2018

Im well aware of dealing with acid/harsh cleaning products from working in the dairy industry.

I splashed some straight mandate (more less super strong bleach) on my hands/pants the other day. Think getting carb cleaner in a cut x10 and by that evening had burn holes in my wranglers.

bobbywalter · Nov 25, 2018

you will poke your eye out kid :thefinger:

dirtymike · Nov 26, 2018

I mix it with my bloody Mary.

rusty ol ranger · Nov 29, 2018

How long should i let it soak in the solution?

bobbywalter · Nov 29, 2018

couple hours at 30 percent with distilled.

blast it out with a binks gun and water...fill with water or iso or mineral spirits and pressure test.

then blast out with mineral spirits.

Cleaning fuel rail?

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