THERE IS A SHRADER VALVE LOCATED JUST BEHIND THE INTAKE MANIFOLD. LOOKS SIMILAR TO A PSI VALVE STEM ON A TIRE. REMOVE THE CAP AND RELIEVE THE PRESSURE JUST AS YOU WOULD ON A TIRE.
Bump the starter, in other words turn your ignition(key) to start just long enough to turn over engine but not start. This is the metheod the haynes manuel uses for a 95 Nissan 4x4 w/fuel injection. It releases compression in the FI system, but since the engine isn't running(if it's running it needs more fuel pumped from gas tank)and since all FI is computer controlled...no more fuel is pumped becase the engine isn't running.
I own a 95 silverado 5.7 and when I turn off the engine, the fuel pump stops running and there is no more pressure in the fuel lines. It's most likely the same on your 93.
The old stand method - Pull the fuel pump fuse, turn the engine over with the fuse removed (engine may run momentarily as it uses up the remaining fuel) and viola no residual pressure in the fuel system. Don't forget to put the fuse back!
Remove the gas cap, and then look for a Schroeder valve on the fuel rail. If there is no valve, then you cannot relieve the pressure. Just be prepared for a spay of fuel when you take the fuel filter off. Wrap a rag around the coupling as you loosen it.
EVAP emission control system pressure sensor high.
no
The most likely cause is the system is low on refrigerant. The second would be a defective pressure cycling switch.
A diagram of a 1993 Chevrolet Silverado AC system can be found a local auto part chains. These stores are connected to an online data bases which have diagrams for many vehicles mechanical systems.
To relieve pressure before it can cause damage to the system that is pressurized.
To relieve excess pressure in cooling system exceeding predetermined value.
They are screewed into the exhaust pipes--SYSTEM. I belive there is 3 of them in exhaust system. There is none after the muffler.
Chevrolet does not use inertia switches. The fuel system is computer controlled with relays.
The schrader valve on the low pressure side of the system.
Check your connections and the air injection check valves. -Jager
Im trying to figure the same thing