I never took to an interest in CIS so I don't have a lot of hard experience from living with it for 8yrs.. In lew of that there are fuel circuits I don't know much about.

if you can eliminate ignition then it has to be fuel. What is shutting down the fuel? The FD has a check valve that can be accessed and removed delicately. The pump is turned on and that line is flushed clean. Also a return line restriction might also cause something wacky to occur? What is shouting down the fuel?

party hearty..

Westy,
I wish you find your problem a.s.a.p. but I put my money on the FD that is a bit jammed or pressure valves in it are not working.

You can clean the FD by soaking it in carb cleaner until the centre piston is truly free (just don't drop it or it's garbage), also remove the small screens in each of the ports that will only accumulate rust.

Good luck!
-J

A few other things:

How old is your fuel filter?
Did you check the screen @ bottom of fuel tank?
Wiring to fuel pump and relay?
Did you say you checked your control pressures?
your AAR?

Yeah, control pressures were within spec, but we're gonna do them again, hot and cold. Fuel filter is brand spankin new, fuerl tank is almost empty and spotless. I mean, there is no debris or rust. It appears someone else already addressed this issue. Fuel pump relay and fuel pump are working. AAR is also working. I really think we have a small vacuum leak, or a bad fuel distributor as has been mentioned several times. Oh well, it's a work week, and I'll tear into some stuff this weekend.

And while we're at it, what would a good price be for the computer under the passenger seat.

And one last question, would the WUR test poorly and indicate failure if the fuel distributor was wacked? Hmmmmmmmmm

"nother update. Advanced the ignition to get it running, futzed around,,,,but no avail. The car started up pretty easy, ran for a while, and once it got warm it died. "

Sounds like the pressure regulator needs adjusting. When the engine is cold, the fuel pressure on the fuel distributor is low to allow for fuel enrichment. The pressure regulator allows more fuel to go through it to make this happen. As the engine warms up, and the heat from the engine warms up the fuel pressure regulator, the pressure through it is restricted, causing the pressure on the fuel distributor to be higher thus leaning out the fuel mixture.

To check if the plunger in the fuel distributor is in the right location, turn the 3mm screw out to lean out the fuel enough to stop the fuel flow to the fuel distributor.

Turn the key on to start the engine. If it doesn't start, turn the 3mm screw one full turn CW to raise the plunger. Try to start the engine again. If it doesn't start, continue to do this until it does. When it does, it is at that point where the plunger is at the bottom of the opening in the fuel distributor to allow enough gas through for proper idle.

If the engine starts, press the throttle to see how it responds. If it backfires, it's running lean and give it another quarter turn in.

This is your starting point to get your fuel feed to the fuel distributor correct.

In addition, check your air flow sensor plate to make sure it is at the correct position with relation to the throttle body (that is if it's adjustaable) mine on my 78 SC Targa is.

Once you have reached a starting point with the fuel distributor see how the engine runs when it is warmed up. If it still acts like it is starving for fuel, check your pressures and your fuel pressure regulator. It may be out of adjustment.

My 78 doesn't have a computer but everything else with the CIS is pretty much the same as yours. Hope this info helps.

Steve

"A Porsche does more then just go fast in a straight line"

Also, check out "Stranded in a Parking Lot..." thread

Was this resolved?

Any further info?

Yes and no.... Tuned out to be a bad WAR. Sad thing about it that is was BRAND new, and since it was a defect,they wouldnt credit him a new one. Last i heard he was just driving it. I set the hot mixures, and he's dealing with the cold problem...

So let me get this straight....he bought a new parts and it was bad and WHY doesn't he get a new one? Who in the hell did he buy it from? I can't believe that they wouldn't give him a new unit.

Thanks for the input. I am going to drop you a pm.

Didn't he say the WUR came from our host?

Even our host sells new,defective parts

je je

VicSmileWavy

But they promise to replace them. See Wayne's current Clewett thread. MobileWrks said PP would not replace!?

well, i think they monkeyed with the pin, which probably voided the warranty. i think once the CIS pressures were whacked, the lesson learned is to call ASAP, rebox and send back. westy must have ran over the porsche god's dog, because he is getting it hard.

oh, he pissed of the camaro god's too. but i will let him tell that story.

Let's clarify the situation here. The car was not running well to begin with. It was supposed that the WUR was the problem (it didn't really seem like it to me when I read the information).

The customer bought the WUR, and then modified it (actually, it appears like the customer's mechanic modified it). Once a part is opened up and modified, then we can't take it back (as we cannot return it as defective to our supplier, since it's been modified). These units are set and calibrated from the factory, and they shouldn't not be altered or modified, unless you are working on a custom CIS system that is being tweaked for a larger displacement motor.

If the part had not been modified, then it would have been easy to exchange it for another one with no questions asked.

-Wayne

Guys, let's kill this thread,,,,what's done is done. Jimmy Deering did what many of you agree is the right thing. His boss also agreed that what he did is correct. I doubt few of you would question his knowledge and abilities. The WUR was bad, but we didn't realize this until after we knocked down the pin to bring the pressures into spec. It's done, and so be it. Wayne is not at fault. I wish he was, but he runs a business just like many of you. I hold no bad feelings toward him. Jeeees, I have too many other issues with the car right now, so this one has been put to sleep. Thanks for all of your input.

Brian W.

PS. Jimmy Deering will be welcomed to my house next time I need a mechanic. He knows his stuff, and I would hate it if this thread tarnished his reputation. He is one of the hardest workers I have ever had the pleasure to deal with.

I hear alot of shops saying that if you put a new one in(WAR) it does not need to be adjusted... 85% of the porsches i worked on didnt have to be, that leaves a gap of those that do... You read a post, but dont know the pro's and con's. Brian sat there OVER my shoulder as i gave him the specs, volumes and pressures on what is what, and how and why... Thats why i dont mind for those of you that ask all you can, its a PORSCHE, things aint cheap..
Everything in this world doesnt come with a guarantee.
:Heres my note from the R/O :
"sytem pressure 0.2bar out of spec" so i set it in spec,(modify)aka adjusted it......
" I buy, and have alot- ALOT, of my customers that arent pelicans by parts from here. All are happy with service and prices. Life doesnt come with a guarentee, things happen... if i knew that it was my misjudgement, i will gladly give him a refund, or have bought a new one... he knows that.....

P.S: anyone needs exact pressures, volumes and all adjustments given. Feel free to email me at Porscheworks@aol.com

Brian,

Is the WUR bad because the bi metalic strip is not doing it's job or is it because it is out of adjustment?

Steve

"A Porsche does more then just go fast in a straight line"

Storm,,,,hard to say. I haven't taken it apart, but the pressures were out. Once the pressures were in spec the car ran, but not when cold. That would leave me to believe that it's the strip, but I haven't looked. I have nothing to lose, so I'll end up taking it apart and looking. Problem is, I'm not sure what to look for to see if something's bad. I'll probably try and ompare it to another WUR I have since purchased.

jimmy, i hear nothing but good words about your work ethics, and skill. nothing to worry about. same with tom.

Tom is a good guy, and knows his stuff. I dont let a few postings get to me. Every body has opinions, and thats life. Not everyone is right... Everyone on this board i have tried to help out. So if some are affended, well not intended.....

Thats to all....