Pressure test ?? Cooling system? A/C? Fuel Pressure? Compression?
To test fuel pressure on a 1999 Pontiac Sunfire, you'll need a fuel pressure gauge. First, locate the fuel rail on the engine and find the Schrader valve, which is similar to a tire valve. Attach the gauge to the Schrader valve, then turn the ignition key to the "On" position without starting the engine to check the pressure reading. It should typically be around 41-47 psi; if it's outside this range, there may be issues with the fuel pump or fuel filter.
On the rightside of the car. The low pressure line with the blue cap.
There is no speedo cable on a Sunfire.
The fuel pressure gauge will help you check the fuel pressure in a 1997 Sunfire. When the pressure is low their is a repair manual which advises on what steps to take.
do fuel pressure test
Remove the rocker assembly and pressure test the cylinders.Remove the rocker assembly and pressure test the cylinders.
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Near the rear of the vehicle up near the gas tank; RELIEVE FUEL PRESSURE FIRST BEFORE REMOVING THE FILTER!!!
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If you pick up a Haynes or Chilton manual, you'll find all of the fuel system test procedures and requirements. FriPilot
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