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fuel pressure Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting radio115 New User Jul 5, 2013, 8:47 AM Post #1 of 4 (1868 views) fuel pressure Sign In I have a 94 mazda protege need to do fuel pressure test. What should fuel pressure read at? Tom Greenleaf Ultimate Carjunky / Moderator Jul 5, 2013, 9:07 AM Post #2 of 4 (1848 views) Re: fuel pressure Sign In If this engine should be this.............. FUEL DELIVERY VEHICLE SPECIFICATIONS RESULTS FUEL SYSTEM PRESSURE 1994 Mazda Protege 1.8L MFI SOHC 4cyl The Fuel System Pressure 64-92 PSI (Pounds per Square Inch)Start the engine and then proceed to disconnect theelectric fuel pump connector. Allow the engine to idleuntil it runs out of fuel and stalls. Turn off theignition switch, disconnect the negative battery cableand attach a fuel pressure gauge to the fuel pump,then plug the other end of the fuel hose.Reconnect the negative battery cable, then attach anan electrical jumper wire between the fuel pump andnegative pin terminals of the data link connector.Verify that no leaks are present, and with theignition key in the on position, energize the fuelpump and bring the system to a stabilized fuelpressure. Visually verify the PSI reading on thegauge. *********************** T (This post was edited by Tom Greenleaf on Jul 5, 2013, 9:07 AM) Hammer Time Ultimate Carjunky / Moderator Jul 5, 2013, 10:24 AM Post #3 of 4 (1834 views) Re: fuel pressure Sign In Here are the correct regulated specs Fuel Pressure Specifications Regulator vacuum hose connected Fuel Pressure 206 - 255 kPa (30 - 37 psi) Regulator vacuum hose disconnected Fuel Pressure 265 - 314 kPa (38 - 46 psi) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. Tom Greenleaf Ultimate Carjunky / Moderator Jul 5, 2013, 1:21 PM Post #4 of 4 (1822 views) Re: fuel pressure Sign In That makes a lot more sense than what data I found which was just maxing out the thing I think by force?? T   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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