LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Porsche
>>
1986
>>
928 Automatic
>>
Repair and Diagnosis
>>
Engine Performance
>>
Ignition System - BOSCH EZF
>>
Testing
>>
Ignition System Tests
>>
Poor Engine Performance
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Poor Engine Performance
Perform the following:
GROUND POINTS & CONNECTOR/TERMINAL TEST
SPEED/REFERENCE MARK SENSOR TEST
LOAD SENSOR TEST
TEMPERATURE SENSOR I TEST
THROTTLE SWITCH - IDLE CONTACT TEST
THROTTLE SWITCH - FULL THROTTLE TEST
EZF IGNITION SYSTEM OUTPUT TESTS
OCTANE LOOP TEST