Need a shop, I give up.
 

I’m between Bakersfield and Santa Clarita valley. 1980 SC. Thanks

Costa Mesa area has some really good ones. Try Dave at TRE.

Tried TRE. Made it worse.

What is the issue you need help with?

http://forums.pelicanparts.com/porsche-911-technical-forum/1031632-idle-up-idle-down-dies.html

I started a thread already and am going to keep trying to diagnose the problem. Nice to find a reputable shop near me in case I fail!

Sorry to hear about your issue with Dave. I’ve always found him to be straight up and never had any bad issues with him. There’s a guy, named Guy(!) in San Luis Obispo that knows early aircooled very well. Not sure if he’s still wrenching. I moved out of Kali 10yrs ago. He used to have his own shop and then went over to Smith Volvo (a big dealer of used P-cars) on the central coast. I used him for years and NEVER had a problem. Good luck.

Have you tried Mark Bixen at Red Line 310-280-0700 or Joe Toliva at Axiom (310) 736-5650?

They're both very knowledgeable and seasoned air-cooled Porsche experts.

If you don’t mind doing some of the tests etc on your own I’d be happy to talk you through troubleshooting. CIS is actually a logical system once you’re familiar with it. PM me if you’re up for it.

Give up?
 

Mark,

I am wondering why you are giving up when you actually has not done anything to investigate the root cause of your problem. All you did was asked so far. Since you are mechanically inclined and willing to buy some diagnostic tools like a set of CIS pressure gauge, give it a shot. CIS troubleshooting is not difficult. Someone already mentioned the magic word “logic”. You need a good common sense and ability to listen to good advises. Keep us posted.

Tony

I ordered a fuel pressure gauge kit and waiting for that. Tony said that is a must. Right now it doesn't start. What other equipment is needed for tests? Thanks

Please see my thread --

idle up, idle down, dies

Modern Specialists in Long Beach have always been great to me. Leo or Ralf.

Being CIS, this sounds like a huge vacuum leak.....

I've always had good luck with Jeff at AASE Motors in Fullerton and with the guys at Sleeper's in Costa Mesa.

Good luck!

I like the approach of troubleshooting and testing yourself...you can solve this!

Here are the tools we will need to test everything, but you can start with the fuel pressure gauge kit.

Fuel pressure gauge kit
A bypass wire/fuse to jump the fuel pump relay to help execute the fuel pressure test - I can show you how to easily build this with a couple things from the hardware/auto parts store
Digital multimeter capable of measuring voltage, resistance, and dwell or duty cycle
Smoke machine to test for leaks
A 12V power source
A 3mm allen wrench

I can let you know where to buy these things or which models to get, but let's just start with fuel pressures. I can walk you through the set up and testing when you're ready. If fuel pressure check out okay we can move to the next thing.

The is an old saying about CIS:
There are 3 kinds of CIS Owners:
1) The guys with working CIS systems are probably out driving their cars so they won't reply.
2) The guys that tinker with their CIS systems and have them royally screwed up will keep you running in circles with suggestions.
3) The guys that have spent a fortune on Webers will tell you they're great to justify their expenditure to themselves.

That said, before you mess with the CIS components, be sure:
-You have NO Vacuum leaks in the induction system.
-You have fresh plugs;
-If you have points, have fresh points and the dwell is set correctly;
-Your timing is set correctly
-You idle speed is set correctly; and
-Your advance is working properly.

Once these are spot on, then and only then, you should do the CIS pressure tests and figure out if the CIS components are working properly.

Messing with the CIS parts will sometimes mask an underlying problem and it will keep returning.

Troublemaker.

Exactly

You forgot number 4); CIS guys who have some weird, romantic reverence for a slow performing, not easily user adjusted (without WUR mods, and fuel head mods if after serious HP - dialing in idle AFRs doesn't count), band aid component laiden, dinosaur tech fuel delivery system that was more suited for a grocery getter than a sports car. Yer welcome! :)

Absolutely correct.
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Except for “...K-Jetronic debuted in the 1973.5 Porsche 911T in January 1973, and was later installed into a number of Porsche, Volkswagen, Audi, BMW, Mercedes-Benz, Rolls-Royce, Bentley, Lotus, Ferrari, Nissan, Peugeot, Renault, Volvo, Saab, TVR and Ford automobiles. The final car to use K-Jetronic was the 1994 Porsche 911 Turbo 3.6”

So yeah, just grocery getters.