Gm Fuel Pressure Diagram

45+ Gm Fuel Pressure Diagram Gif. Current and ground along with no fuel pressure suggest a bad fuel pump. The fuel pressure test port will be found on the driver's side (left side referenced when sitting in the vehicle) fuel injector rail.

6.5L GM Diesel Fuel System Bleeding Procedures from www.dieselhub.com

Switch off ignition reconnect co potentiometer (g 74) harness connector determine open circuit and eliminate using wiring diagram, see repair group 01. .fuel filter,bad pressure regulator,wrong spark plug, if you can check that and let me knbow how it went. The computer will see that the air fuel ratio is off and will light the check engine light and store the p0171 lean code that can be retrieved using a.

Test vehicle fuel pressure systems on gm tbi vehicles not equipped with a schrader or fuel.

Let us be the class 101 for your automotive learning. You will need a high pressure pump with enough volume at your operating pressure to feed you engine under maximum load. Gm most commonly tends to use a solid gray wire for 5v reference, however you will still want to verify this with your wiring diagram, and a voltmeter set to dc. The gm fscm is there primarily to run the fuel pump itself, and is responsible for maintaining the required fuel pressure (in both port injection and the fscm controls both power and ground to the pump.