Engine: Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Engine - Approved Porsche A40 Engine Oils
- Technical Information (Advanced) - 23rd Supplement
- Overview
- 928 M.Y. 1985/86 Flywheel/Ignition Timing-Performance Problems
- 924S, 944, 944S M.Y. 1988 Crankcase Ventilation Heater
- 928 S4 M.Y. 1988 Engine Oil Level Checking System -- Modified
- 944 Engine Performance - to Determine Cause of Problem
- 928/928 S4 Ignition Trigger Control Heat Conducting Paste
- 911 Turbo M.Y. 1986 Ignition Delay Relay - Modified
- 911 Turbo M.Y. 1986 Acceleration/Enrichment Relay - Modified
- 924 Turbo M.Y. '81/'82 Ignition Control Unit - Pressure Line
- 911 Carreara M.Y. 1987 DME Control Unit Modified
- 911 Turbo M.Y. 1987 Acceleration - Enrichment Relay - Modified
- 944S, 944T M.Y. 1988 DME Control Unit: Modified
- 944S, 944T Knock Sensor - Modified
- 928 S4 M.Y. '87 - '89 Battery - Modified
- 928 S4 M.Y. '89 TDC Sending Unit - Deleted
- 911C2/4 *Reduced Engine Broking Effect
- 911 Carrera M.Y. 1984 Trans Mainshaft Bearing Loose
- 944 Transmission/Drive Train Noise
- Carrera 2/4 *Additional Shifter Boot Installed
- 911 Carrera M.Y. 1987 Rear Stabilize BAR - Modified
- 944, 944S 944T M.Y. 1988 With M-593 ABS - Modified
- 911 Carrera 911 Turbo M.Y. '88 Hand Brake Shoes - Modified
- 944, 944S, 944 S2, 944T, 928, 928S 928 S4, 928 GT P.S. Belt Tension
- 911 Carrera Door Lock/Tumbler Set - Replacements
- 928S Front Hood - Height Adjustment
- 944 Front Fender - Modified
- 944, 944T M.Y. '89 Rear Lid Modified
- 911 C 2/4 *Door Contact Switch Modified
- 911 Carrera M.Y. 1985 Electric Window Winder Relay - Relocated
- 911 Carrera M.Y. 1985 Mirror Switch and Window Heater
- 911 Cabrio M.Y. '86 - '89 Convertible Locking Motors - Modified
- 911 C2/4 *Tonneau Cover Strap Fasteners Installed
- 944, 944 Turbo M.Y. '86 Seat Back Unlocking Knob - Installation Procedure
- 944, 944T M.Y. '89 A/C High and Low Pressure Switch Modified
- 924 Turbo M.Y. 1981 Tachometer - Supersession
- 911 Carrera 911 Turbo M.Y. 1988 Luggage Compartment Wiring Harness
- 928 S4 Securing of Battery Ground Cable - Modified
- 928 S4 911/T M.Y. '88 Alarm System - Modified
- 928 S4 All 4 CYL. M.Y. 1988 Windshield Wiper Relay - Modified
- 928S/928 S4 M.Y. '86, '87, '88 Modified Rear Lid Motor
- 911 Carrera 911 Turbo 928 S4 Spare Paint Deleted
- Engine - Poor Performance After A Cold Start
- VIN, Certification, & Emission Label - Availability
- VIN, Certification & Emission Labels - Availability
- VIN Plate, Certification & Emission Label - Availability
- Tools - Rebuilt and Exchange Program for Tools
- Tools - Calibration Gauge for Special Tool 9201
- Warranty - Engine Follow Up Service After Major Repairs
- Valve Seal - Replacement Procedure
- Toothed Engine Belts - Storage, Packing and Handling
- Timing Belt Cover - Ventilation System Change
- Camshaft Spur Belt - Loosely Adjusted
- Cylinder Heads - Tightening Procedure & Service Changes
- Balance Shafts Spur Belt - Maintain Runing Direction
- Spur Belt - Rubbing on Belt Cover
- Engine Short Block - Installation Modifications
- Oil Pan - Sealing
- Tools - Oil Cooler Testing
- Rear Drive Belt - Oscillation or Damage
- Oil Pressure Relief Valve - Identification & Application
- Oil Pressure Relief Valve - Modified
- Engine - Oil In the Cooling System
- Engine - Lighter Version Connecting Rods
- Oil Pressure Relief Valve - Revised
- Engine - Drive Belt Checking and Adjusting Values
- Connecting Rods, Nuts - Revised
- Connecting Rod Nuts - Incorrectly Made
- Balance Shaft Belt - Align Paint Mark When Installing
- Camshaft Drive Belts - Recommended Usage
- Tools - Auto Scopemeter & Engine Analyzer
- Coolant Pump - Installing New Type
- Spark Plugs - Install With Threads Clean and Dry
- Spark Plugs - Revised Plugs and Tightening Torque
- Engine - Modified Components
- Camshaft Drive Belt (Turbo) - Revised Part & Adjustment
- Camshaft Spur Belt - Proper Tension Adjustment
- Cam Belt Tensioner Nut - Torque Specification
- Camshaft Drive - Replaced Parts Upon Belt Failure
- Cylinder Heads - Machining and Using Correct Gaskets
- Engine - Low or No Oil Pressure On Cold Start
- Oil Cooler/Oil Pressure Relief Valve - Repair Guide
- Coolant Pump - Leaks
- Oil Cooler Housing Blind Plug - Leaks
- Oil Cooler Housing Blind Plug - Leaking
- Oil Cooler Housing - Leaking
- Engine Main Bearing - Revised Torque
- Engine - Additional TDC Mark on Flywheel
- Engine - Tune Up Specifications
- CO Sample Pipe - Material and Mounting Change
- Engine Lubrication - Oils That Minimize Carbon Build-Up
- Engine - Motor Oils That Minimize Carbon Build-Up
- Engine - Approved Engine Oils
- Engine - Porsche Approved Oils
- Engine - Excessive Vibration From Engine Mounts
- Hydraulic Engine Mount, Right Hand - Vibration
- Engine Mount - Revised, Installation and Checking
- Engine - Approved Engine Oils Overview