1976 911S fuel Problem

[Obsessed]

I'm new to the world of actually owning a Porsche, I was always in the wanting one world. The problem I'm having is on a 76 911S. The history of the car is it has been sitting for about 6 years. I got it from a 83 year old gentleman who was liquidating some of his assets. the car is immaculate other than the paint. I'm assuming the guy took good care of the car, but don't know for sure.

Here is the problem. I can start the car. It will idle for about 5 seconds, then die. It seems to be dumping, and I mean DUMPING fuel. While it is running, I can get it to stay running by pumping the throttle, I throws out a white cloud of fuel vapors as well as liquid fuel. needless to say, I did that once. there is obviously a problem. fuel is also leaking off of the exhaust mainfolds, on both sides. I don't think it is coming from inside the manifold, but around it. The problem is obviously in the fuel system.

I am mechanically able to work on this, I'm just hoping some opne out there can help me with a place to start looking. when the key is turned on, there seems to be a high pitched "whine" coming from the engine compartment. don't know if that is pertenent, but what the hey.

thanks in advance for any help.

[echrisconnor]

Welcome to CIS. There are a lot of threads on starting a car after it has been stored for a while. First, I'd dump all the old fuel and add new gas to the tank. Change the oil, change the filter and change the plugs too.

Now, I'm not certain here when you say Dumping fuel, whether you mean that fuel is leaking, or whether it is running massively rich. If it's just running rich and spitting fuel out the tailpipes it's pretty easy to fix.

What I suspect is happening is that some of the plugs are fouled and you're not running on all cylinders, hence the fuel coming out the tailpipe. So, a simple swap of plugs, and better gas may clear things up. Also, one of these cars that has sat for a while will blow all kinds of smoke for a while. If you can get it runnig reasonably well, go out and drive it hard to burn all the crap out. Amazing things happen after a good hard drive. If neither of these things fix it, then you should go through checking your fuel pressures (do a search) and setting the mixture/CO (take it to a shop).

Finally, here's a good link on CIS, how it works and what the parts are:
http://members.rennlist.com/jimwms/CIS/CIShome.html

Apologies -- I re-read your post and it does sound like fuel is leaking. The above link shows the fuel line routing diagram. You can jumper your fuel pump relay so that it runs with the ignition on, this will pressureize the system without running the car. With pressure in the system you can look around to see where the fuel is leaking from. Your car has the plastic fuel lines, which can get kinked and can leak. If it's leaking though, all the places to look are external to the engine. Remove heater hoses, get a flashlight and a mirror, and do some poking around.