Hibernating 82 911SC
 

Maybe someone can help me get this car running again.

This car has sat in the garage for 5+ years (crazy, I know).
Its all original with CIS injection and has the standard upgrades like pop up valve and hydro tensioners.
Five years ago it ran fine and was parked in the garage.
Before trying to start her up I drained out all the bad fuel and flushed out the tank several times and cleaned out the strainer. I removed the fuel pump, accumulator, and filter to remove as much bad fuel as possible.
I put it back together, added fresh fuel, lifed the air sensor lever to bleed the system, but no fuel is coming to the engine.
I went under the car and with the ignition on, had my wife lift the air sensor lever.
I hear the fuel pump coming on and it sounds like it`s doing what it`s suppose to do. I removed the fuel line going into the accumulator and not a drop is seen.
So now what?
Is there something else that could be stopping the fuel from reaching the accumulator, e.g. a sensor or something.
Is there an easy way to test the pump. Could it be something with the return line creating a vacuum.
Where do I start?
Any advice would be greatly appreciated.
Thanks, Mike

welcome to the forum SmileWavy

good luck mate!

fuel problem
 

I would try to disconnect after fuel pump, but before fuel distributor to see if its at least pumping from tank to the FD.If its gummed up there's little chance fuel could get thru...???FM

I tried that. The accumulator is the first inline from the tank.

Disconnect the fuel line at the fuel pump (lots of rags and a FI).

Lorne m

CIS troubleshooting.........
 

Mike,

Since you already checked the fuel flow to the accumulator, do another test upstream. Check for fuel flow right after the FP outlet. FP could be bad or not getting fuel from the tank. Do not replace CIS components unless verified defective. If you have a CIS fuel pressure gauge, check the pressure. This will give you an idea about the condition of your FP. Keep us posted.

Tony

Thanks Tony,

Tomorrow I am going to check with House of Hose here in Las Vegas to see if they can make me a fitting and fuel line to check the pump while it is still in the car and bypass the line thru the tunnel.
I have read about a safety system designed into the circuit that shuts down the the pump if the car is in an accident but I`m still unclear how it works. I have also read about jumping terminals 30 and 87A on the red relay in the trunk to bypass the safety system for testing. I have a Haines manual which is about as clear as mud and a Porsche factory manual thats not much better. When I tried jumping the terminals the engine wants to crank as soon as it is turned on and I still have no fuel.
Are you or anyone out there familiar with that system and how to test it?
I think if I can get fuel to the accumulator I will be 99% there. I am wondering, how big of a piece of crud can pass thru this type of fuel pump and how much will the strainer catch before the pump?
Thanks, Mike

Fuel pump test.......
 

Mike,

Here is a very simple procedure you could do without dismounting the FP:

1). Disconnect the delivery line of the FP (banjo fitting) slowly and be prepared to catch the gasoline drip (not much) either with rags or a small pan.

2). Install a large transparent plastic hose over the check valve end of the FP. Find something (plastic hose from Home Depot) that will be tight enough to fit over the check valve and use a micro clamps to secure it in place. The other end of the hose goes to a collection bottle or container.

3). Different methods to test run the FP (with ignition turn ON):
a). Lifting the air sensor plate.
b). Using a jumper wire between terminal #87A & #30 (FP relay socket).

If you don't get the gasoline flowing out with the FP running, the reason/s could be:
1). A defective FP.
2). No gasoline was flowing to the FP inlet

Please take the necessary precautions when handling flamable liquid like gasoline. Better be SAFE than sorry. Keep us posted.

Tony

If you're serious about your 911, get the Bentley SC Repair Manual; you'll love it.
Among many other things, it explains how to test the pump.

Or test the pump (Flow) as suggested by others.
Did you blow out the lines from the pump to the accumulator?

Once you get the volume from the pump, the worst problem may be that the fuel distributor and injectors are gummed-up which happens when the engine is stored without running Stabil and Injector Cleaner through it before shutting it down.
The best you can hope for is to mix 2 bottles of Techron with 10 Gall of good gas and run it.

Just a thought for you. Have you forgotten that Porsche's need at least 2 gallons of gas to start the engine? Did you put enough gasoline back in after the draining of the tank? It could be something that simple. Just something to consider and if I'm right, I'd sure like to know. Relayswitcher 06 01 08