Just joined.........you guys might have dealt with this one before. So hopefully this is an easy question.

Symptons: You start the car after sitting over night and it runs rough, it misses and it'll Idle down and die if you don't keep on the throttle. If you warm it up for a while, it'll run ok. If you don't the car wont get above 55mph and the oil fills up with gasoline. Now you get the car warmed up and get a goin down the road.....it runs fine until you go to slow down. You push the clutch in and it just dies. You let the clutch out if you're still rolling and it'll bump start itself right up. But if you let the car stop and then try starting it with the starter and you'll be cranking it over forever. You let the car sit for half an hour and it starts right up.

Things I've Done: New Starter, New Plugs, Cleaned out and brushed up the distributor connections (no green death).

My Diagnosis: It seems like the car floods out and just needs some time to let everything drain because one of the cylinders is missing. it doesn't do it all the time though.

Sounds to me like you have one hell of a vacuum leak. Hook up a tune-up vacuum gauge and see what you get. 17-21inHg should be normal at idle. I would also change the ignition wires and cap, just because they look good doesn't mean anything.

I have a new distributor and plug wire set that I'm installing tomorrow, we'll see what that does. The distributor is cracked and a little messed up, so I'm hoping that'll fix it.

Vacuum leak? Might be.......I had to change the heater core a while ago. there is a vacuum tube that seems to go nowhere that goes through the housing. Any clue on where that's supposed to go or if that would be the problem?

The distributor is cracked and a little messed up...

How messed up? I never did a heater core so I don't know where the vacuum line goes but it is probably one of the heater/AC vent servos. The vacuum leak will probably be small and wouldn't be enough to affect drivability but would probably be enough to give you a rough idle. Look at the air intake system, I have heard that the bellows next to the mass air flow has a tendency to crack.

Well, it's not anymore.........a budy of mine works at a Porsche shop that also has a street department...........we replaced the Distributor and Spark Plug wires last night. The car runs a little nicer, but still stalls. And only runs on a couple cylinders sometimes. And the oil when we checked it last night has a bunch of fuel in it again.

The weird thing is that it's not constant. And the car runs good at low rpms, but when you get above 30mph, when it's acting up, then it misses. I checked that line when I replaced the heater core and it didn't seem to have any suction on it with the car running, tried it with the heater and air conditioning on. I'm lost.

The only way you can get fuel into the oil is if you have a bad injector. The fuel will easily seep past the rigs and into your oil. Pull the injectors and do a balance test, the injectors shouldn't differ by more than 10%. Also check the spray pattern.

Could it also be an electrical thing causing the Injectors not to fire?

The CIS-E injection is mechanical with electronic fine tuning. The injectors don’t pulse on-off like a typical EFI system but develops a continuous stream of fine mist at idle to a heavy spray at full throttle. The injectors typically should open when the pressure goes above ~ 48psi.If you have carbon deposit or a worn injector the fuel might not be atomizing properly or leaking as if it were at full throttle or it could even be completely closed.

That would explain a lot........I'm gonna run a bottle of injector cleaner through and see if that helps. I'll keep you posted. What a pain in the a**.

Well, we fixed it. Cleaned out the idle valve, which was filled with a bunch of gunk. ALso cleaned out the flap located behind the fuel distributor. Now the car runs beautifully.

Glad you solved the problem. While cleaning out the mass airflow sensor did you check to make sure that the sensor plate it is centered and did you clean the plunger on the fuel distributor? This too has a tendency to stick as the fuel gums it up especially if the car sits for a long time. Another frequently overlooked item is the roller bearing located on the arm of the airflow the sensor plate.