Operation CHARM: Car repair manuals for everyone.
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Symptom Related Diagnostic Procedures

Trouble-shooting

For complaints such as:
Very poor engine performance, black or blue smoke, tendency for knocking at full load, poor starting characteristics with smoke, rough idle.

Test conditions:
Throttle linkage correctly adjusted, connect revolution counter, engine at operating temperature, run engine at idle (750 i 50 rpm) (without increasing speed), steering in straight-ahead position, air conditioning switched off, selector lever for automatic transmission in position "P".

Test:
Exhaust gas recycling.

Special Tools:




Conventional tools
Rev counter

Shop-made Connection:






A. (USA) model year 1980





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Test (Part 3 Of 3):









B. (USA) model year 1981





Checkup

Note: At begin of test, yellow orifice (63) should be installed.

Test (Part 1 Of 4):








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o 2Test (Part 3 Of 4):








Test (Part 4 Of 4):