LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Porsche
>>
1989
>>
911 Turbo, 2D Convertible
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Basic Testing
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Basic Testing
Expand All (for easy ctrl-f)
Collapse All
Introduction
Preliminary Inspection & Adjustments
Visual Inspection
Mechanical Inspection
Compression
Notes
Exhaust System Backpressure
Fuel System
Fuel Pressure
Ignition Checks
Spark
Ignition Circuit Power Check
Ignition Coil Primary Resistance
Ignition Secondary Resistance
Reference Mark Sensor
Idle Speed & Ignition Timing
Summary