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-   -   1978 (82) 3.0 CIS motor will not start. (http://forums.pelicanparts.com/porsche-911-technical-forum/742880-1978-82-3-0-cis-motor-will-not-start.html)

Trunkmonkey4 04-16-2013 10:20 AM

I apologize if I came across impatient or not willing to get my hands dirty... I am just extremely busy these days, so the limited time I have to work on the car I try to have a very concrete plan set out so I can be more efficient of my time.

I will start to go down the list this afternoon and test the items you have listed and that have been mentioned from others. I am just dumb founded on why it would just have hot start issues then now it won't start regardless.


I will update this tread when I have discovered something.. good or bad.

Trunkmonkey4 04-16-2013 03:38 PM

Got the car running a few mins ago... I am positive I have a fuel issue now. I pulled all the injectors, bottled them and when I just turn the key to 'on' (not start) they dribble some fuel right when you turn the key to the 'second click'. I pulled the fuel pump relay and they stopped.

Question: Are the injectors supposed to be leaking fuel when the key is just turned to on? Like I said they only squirt out a little right when the key hits the second position.

I then turned the car over and after a few tries it fired and then sputtered out after about five seconds, then I re installed the injectors and the relay and tried it again. The car fired up like it should and idled fine... after letting it sit for a few minuets I took it for a spin around my block and it drove like it should.

I am going to wait about half an hour then try and start it. If it doesn't start that is another strike for the FA. I will pull it tomorrow to make absolute sure... (cant I just unscrew the bottom 'outlet' and if gas comes out I have a problem?) My CIS tester should be here by friday so that should also help to shed some light to the problem.



Thank you everyone, I know that I can seem to be a tad 'pesterish' at times but I just want my baby to run the way she is supposed to.


EDIT: Oh heres a picture to make this thread a tad easier to look at.
http://i995.photobucket.com/albums/a...ps836d819d.jpg

Bob Kontak 04-16-2013 05:55 PM

Quote:

Originally Posted by Trunkmonkey4 (Post 7389455)
I apologize if I came across impatient or not willing to get my hands dirty... I am just extremely busy these days,

There are three things in a project that matter:

1. Cost
2. Schedule
3. Quality

You can only have two of the three. Never, ever, all three.

Quote:

Originally Posted by boyt911sc (Post 7389388)
Stop the quess work and start doing something sensible to get to the bottom of your problem/s........

+1

How did you adjust the A/F ratio? How do you know it's right? I may sound like a pompous jerk (Wait - I am am a pompous jerk :D) but I bet you don't have a clue how to do this with respect to a functioning O2 system.

Chill out, get your pressure testing equipment, read a boatload e.g., CIS Primer and do some homework. Charles Probst's book is good too. Google it.

You have the interest and enthusiasm which is mandatory. Get yourself some patience and determination - logical determination.

CIS is complex for the noob. But twelve hours of diligent study will go a long, long way to helping you understand the basics.

CIS Primer for the Porsche 911

Amazon.com: Bosch Fuel Injection and Engine Management: How to Understand, Service and Modify (9780837603001): Charles O. Probst: Books

Bob Kontak 04-17-2013 04:31 PM

Where you at, Trunkmonkey?

http://forums.pelicanparts.com/uploa...1366245079.jpg


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