Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1985 Pontiac 1000 2D Hatchback, AutomaticFACTORY OEM SERVICE PROCEDURE
Opening Pressure
- A reliable tester is required to perform test. Use clean test oil. Care must be taken not to damage the gauge with excessive pressure. Connect test line to nozzle holder assembly and tighten fittings.CAUTION: When testing, DO NOT place hands or arms near nozzle. The high pressure spray from nozzle will penetrate flesh and destroy tissue, and may cause blood poisoning. The tip should always be enclosed in a transparent container to control spray.
- Close gauge valve and operate tester handle sharply several times and check for proper nozzle position. Spray should be injected into a clean container.
- Open gauge valve and operate tester handle slowly to determine injector opening pressure. Observe gauge reading just before oil is sprayed from tip. A buzzing noise will occur when spray is injected. Minimum opening pressure is 1706 psi (120 kg/cm2 ).
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.