Porsche 911 DIY Repair Blog: joe-engineer.com/
Tips on how to adjust the fuel mixture on air-cooled Porsche 911s running Bosch CIS K-Jetronic Fuel Injection. This is the complete adjustment for 1979 and earlier cars.
Additional Notes:
1. Applicable for Bosch CIS K-Jetronic cars 1973-1983.
2. Note: I am focusing on NA cars but 930 Turbo and early 965 Turbo cars running CIS also apply.
3. Bentley Manual 1978-1983: amzn.to/3LgjrCG
4. Please take all necessary safety precautions. Not responsible for any personal injury or vehicle damage.
5. Links to prerequisites before performing fuel mixture adjustment:
A. CIS Subcomponents Testing: joe-engineer.c...
B. Smoke Test for Vacuum Leaks: • How To Perform Smoke T...
C. CIS Fuel Pressures Test: • How To Test Fuel Press...
D. Valve Adjustment: joe-engineer.c...
E. Initial Fuel Mixture Setup: • How To Setup Initial F...
F: Ignition Timing: (link TBD)
G: Set your idle. This may need iterative adjustment as you dial in the mixture.
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