About Marc Podeszek Expertise i can answer most questions on mechanical and auto body repair as well as insurance questions. How to take cars apart. Put bulbs in change door handles locks i have 15 yrs experience in this feild and 20 yrs of management
Experience My experience is 15 years of auto body/repair estimating and insurance work as well as mechanical experience. I have a lot of general knowledge in how to do it yourself
Education/Credentials I have 2 years of Architecture and 2 years of technical and Auto paint experience with one of the largest manufacturers of auto paint.
Question I have a 1983 GMC short box, I have been restoring this vehicle. The gas gauge worked before I stored it last winter, now doesn't work. The tank, and sending unit are new. Do not seem to have any power to sending unit. Is there a fuse? Any suggestions or testing methods?
Thanks
Answer PROCEDURE
A fuel system pressure test is part of several of the Diagnostic Charts and Symptom Checks. To perform this test, follow this procedure:
Note : To perform residual pressure check refer to: Fuel Pump, Testing and Inspection.
Turn engine OFF to relieve system pressure.
Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.
Loosen fuel filler cap to relieve tank vapor pressure.
The constant bleed feature relieves fuel pump system pressure when the engine is turned "OFF".
Uncouple fuel supply flexible hose in engine compartment. Install fuel pressure gauge between steel line and flexible hose.
Tighten gauge in line to insure no leaks occur during testing.
Connect negative battery terminal and START engine and observe fuel pressure reading. It should be 62-90 kPa (9-13 psi). If not, refer to DIAGNOSTIC CHARTS/FUEL SYSTEM PRESSURE TEST (CHART A-6).
Turn engine OFF to relieve system pressure.
Disconnect negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.
Loosen fuel filler cap to relieve tank vapor pressure.
Remove fuel pressure gauge.
Install new O-ring on fuel feed line. Reinstall fuel line.
Connect negative battery terminal and START engine and check for fuel leaks.
Install air cleaner assembly.
There is also a relay on the passenger side front if you need more info go to my website collisionrepairadvice.com
