SPICA FUEL SUPPLY SYSTEM DIAGNOSTIC GUIDE 1 This guide is intended to aid the owner-mechanic in understanding and diagnosing Alfa Romeo SPICA fuel supply system malfunctions. It is not a substitute for the official factory repair publications. No claim to absolute accuracy or utility is expressed or implied. The reader uses this guide at his own risk. Contents System Description Good Shop Practices when Working on Fuel Systems Typical Failure Modes of the SPICA Fuel Supply System Diagnostic Guide APPENDIX 1 Replacement of Supply Pumps and Substituting Alternate Pumps APPENDIX 2 Fuel Tank APPENDIX 3 Testing a Fuel Supply Pump APPENDIX 4 Testing the Front Fuel Filter Pressure Relief Valve (PRV) (Earlier models only). APPENDIX 5 Installing an inertia kill switch and electrical relay for the fuel supply pump. APPENDIX 6 Testing the Fuel Supply Pump PRV (’75 on, if equipped with 3-port pump) APPENDIX 7 Testing an In-Tank Boost Pump (’75-’81 models only) APPENDIX 8 Schematics Ver 7, Nov 2004 SPICA FUEL SUPPLY SYSTEM DIAGNOSTIC GUIDE Comments or suggestions about this guide can be addressed to John Stewart, email: roadtrip999@hotmail.com 2 System Description As an early caveat, keep in mind that Alfa Romeo did not necessarily change the specifications and equipment design in strict accordance with model years. It is possible to have cars of the same model year with components from different manufacturers or systems that are slightly different from one another. In the following descriptions….

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