Quote:
Originally Posted by timmy2
Figured I would post this here for all to find.
When you completely rebuild your system and are starting over with unknown richness the Porsche manual provides this tidbit of information to get you going again.
I wrote some basic directions in another post, and here is the text from the manual as well.
Injectors pulled and in jars.
1. Bleed fuel lines by lifting sensor plate many times. Ignition on, pump running.
2. Use 3mm hex wrench to turn mixture screw 1-2 turns counterclockwise (should stop all flow)
3. Make pump run continuously by pulling air flow safety switch off. Ignition on.
4. Turn screw clockwise until the injectors just barely eject. From this point turn the mixture screw back 1/2 turn counterclockwise.
5. Run engine to operating temperature and adjust idle and CO to spec.
Personally I would jumper the fuel pump relay socket instead of pulling the air flow safety switch.
Here is the text:
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Dennis,
This is a very good piece of technical information that would surely help many
CIS troubleshooters. And I completely agree with you about using the
FP relay instead of the
AFS switch. One other thing you could add to above instructions is the importance of verifying or confirming the absence of unmetered air in the system which is commonly over-looked. This is the Achiles' heel of
CIS.
Tony