Pickle WUR and fuel distributor when out...?

[bpu699]

Took the motor apart today, down to long block. Went 10 faster then last time...

When I took off the WUR and fuel distributor, fuel spilled out. Basically, it's now open to the atmosphere...

Any precautions to take? Motor will be apart until spring...

Leave it alone?

Shoot carb cleaner into all the openings?

Pour race gas into all the opening and cap all the openings?

Leaning towards the last option...

[bpu699]

As a follow up question. Can one flow test the cis system when it's off the car?

Just hook up the fuel lines to the fuel system and flow check it while off the motor?

[pmax]

Originally Posted by bpu699

As a follow up question. Can one flow test the cis system when it's off the car?

Just hook up the fuel lines to the fuel system and flow check it while off the motor?

The experts haven't chimed in yet so I apologize for speaking out of turn

Yes, in fact, I'm testing my CIS system and injectors now separately off the motor by hooking to the fuel system. Just gotta make sure the CSV is closed.

Here's a K-jetronic, not a Porsche but the same principles apply, being tested "outside".

[bpu699]

Thanks! Will look at the video when I get home...

[rwest]

Somewhat related, but I may do a Bitz kit and will keep the CIS parts for returning to original down the road if selling requires it for more value and I was wondering if putting them in a vacuum sealed bag would be good? Keeps out oxygen and moisture.

[boyt911sc]

Blow some compressed air and keep them upside down to let the retained fuel to drip out. The FD is best stored with no residual fuel. Spray some penetrating oil into the chamber and plunger for lubrication. Place in a zip lock bag with an absorbent material (paper towel) and store. Protect the plunger from accidentally coming out and falling to the concrete floor. For the WUR, a blast of compressed air and let air dry. And finally in a zip lock. They will be ready for use whenever you need them back on the engine.

You could flow test them off the car/engine. But you will spent some time getting them set up. I have a couple of CIS bench testers at home that could do the tests in a few minutes conveniently and it's FREE. Just take care of the shipping cost back to you.

BTW, I am on vacation (Monterey, CA) and won't be back home in 4-weeks. And would be happy to extend help to you or any PP member when I get back home.

Tony

[bpu699]

Tony, generous offer...

I was puzzled as there were some threads about peoples fuel distributors drying out from lack of use? Do the rubber seals, gaskets failin storage? Does the wd40 prevent that?

[boyt911sc]

Originally Posted by bpu699

Tony, generous offer...

I was puzzled as there were some threads about peoples fuel distributors drying out from lack of use? Do the rubber seals, gaskets failin storage? Does the wd40 prevent that?

Bpu,

When the old fuel starts to deteriorate and form film of varnishes, they tend to cause problem with the fuel distributor's filtration and plunger movement. The clearance between the barrel and the plunger is so small that even a thin film of varnish could prevent the plunger from sliding up and down the barrel.

If you store these CIS components in a well ventilated room, you could keep them in storage for many years without adverse effect. Unless the o-rings are already dry rot and hard, putting them in storage would surely not do any further damage. I don't keep or use WD-40 in my work so can not comment on its performance.

Tony

[pmax]

Here's my amateur setup.



Looks even to me, other bank is similar.

[bpu699]

Originally Posted by pmax

Here's my amateur setup.



Looks even to me, other bank is similar.

Bringing back an old thread, motor back together, want to check the cis and flush it before putting motor back in...

I see some folks figured out how to test flow with the cis off the motor...

PMAX, any more pics of this?

Any more input on this? Anyone have schematic of how the did it?

Is it as simple as hooking up the fuel line, jumping the fuel pump, and checking flow?

Wur isn’t part of the circuit at this point...

Bo

[pmax]

Yes, I simply hooked up the fuel lines as shown above .... but I had the WUR hooked up, I believe that's needed to complete the fuel return circuit. The wiring harness is not connected. I heated the WUR with an external 12V to measure the FP's. Injector lines in your bottles of choice and measure the flow as you indicated.

Of course, given it's flammable stuff so take the appropriate precautions.

[boosted79]

[bpu699]

Originally Posted by boosted79

Explain to me what I am looking at there???

Did you just use long rubber fuel hoses?

Just wanted to make sure this was possible with none of the electronics hooked up... didn't want to hurt anything...

[47silver]

i have a bunch of mfi and cis injectors that i cleaned with that wickedly nasty turpentine, paint remover and acetone mixture in an ultra sonic cleaner.
I put a handful of white rice into a coffee filter (seal it with a tie wrap) and put the injectors and filter into a baggie. With this setup they injectors have stayed corrosion free for months. Every few other month i put in a new filter with rice.

[boosted79]

"Explain to me what I am looking at there???"

I made hose jumpers to run from the fuel filter into the fuel head and the return from the head back to the return on the car. I ran 12v into the engine wire harness from the car connector to supply the 12v to the WUR and a ground between the engine and the car. I also used a remote switch to energize the fuel pumps while standing at the engine. I set up the control pressures on the Leask adjustable WUR and balanced the injector flows this way, it's so much easier than with the engine in the car.

[bpu699]

Thanks... will give it a shot soon...