heinrich

My fuel rails contain goop from sitting. Is there something special I need to do? It seems liquid and fluid at this point, not crystallised, but it sure is thick. Should I just try to run it through the system when I start, or should I try to clean it, and if so what with? We're talking rails; dampers; fpr; injectors.

IcemanG17

Hmm

I'd pull the injectors and send them out to witchunter for cleaning-balancing.....the clean the rails (not sure with what)...do the same for the dampers-regulator...

Shane

Buy a couple cans of Seafoam fuel treatment, use one to flush the rails etc with and the other put into your gas tank with some fresh fuel.

928 at last

I'd soak in fresh gas, that should soften and further liquify the mess, and then use compressed air to blow through. Might have to do it a couple of times.

Had the same issue on a bike a few years ago, and the "fuel flush" worked for me.

Dean_Fuller

This is the way I would go.

86'928S MeteorGrey

Just curious... How long did it sit, and in what kind of temperatures?

928er

unfotunately It is going to be really difficult if not impossible to clean the regulators well... the air pressure or chemicals needed to clean them will damage the diaphrams....

heinrich

2 years, and it was very carefully kept in a shop that's nicer than my living room

I see goop about the consistency of eggwhite.

GregBBRD

Blow it out. Use some spray cleaner....just about anything will work. I wouldn't use spray carb cleaner...pretty nasty stuff. Acetone would work great...most California brake cleaners are now mostly acetone.

Apply 12 volts to each injector and make sure the solenoid works...you will be able to hear them "click". If they don't click...tap gently on them, until they do. Keep hitting them with voltage and then remove the voltage until the clicking sounds the same. This will "free" up the solenoids.

Blow backwards through the open injector with compressed air...crap will come out...watch where you point the open end (not toward eyes).

Spray through the injectors...backwards with them open, at first. Then normally.

Injector guys can't do anything to "balance injectors". They can only clean them and test them.

Install and run the engine. Check the regulators and dampers for leakage into the vacuum system carefully. Current fuels "disolve" the diaphragms. Old fuel is really hard on them. Most all will leak after sitting for any period of time.....many leak just from age. A new set would be money well spent.

IcemanG17

Nuff said......this is what I would do

heinrich

Greg, thanks. Yes that makes most sense. I will also verify the for and dampers can hold vacuum.

heinrich

Carb cleaner never occurred to me. Im planning on using brake and parts cleaner.

waynestrutt

Mine sat since 96. I removed the rails and washed with acetone,if your injectors can be removed from the rail soalk in acetone fill them then apply 9v to open and let acetone drip thu clean. The tank I removed ,put a gal of acetone in left 1/2 hour sloshed clean rinsed all with paint thinners (slightly oily). My pump was toast as was the intank screen. If your intank screen will not unthread easily penetrant may not work. Use a heat gun on the centre part. Do not over heat the plastic tank or the aluminium insert will turn in the tank.

heinrich

Thanks Guys. The car was driven this year, so all fuel components are good. On the replacememt engine, there are very few and easily accessible components.

RFJ

Sorry,but i just don't get it. I have never had fuel turn to jell and do not understand what would cause it,please explain.