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.
1991 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE
Fuel System Pressure Test
NOTE:
Before testing fuel pressure, check all fuel delivery and return lines for leaks.
- Ensure battery is fully charged. Turn ignition off. Disconnect negative battery cable. Place container or shop towel under cold start injector. Disconnect cold start injector (if equipped). Slowly loosen cold start injector or No. 3 fuel supply pipe union bolt to relieve fuel pressure.
- Remove union bolt and gaskets. Install fuel pressure gauge to cold start injector delivery pipe. See Fig 1 off excess fuel.
Factory Service Tools
Use the Manual With the Right Hardware
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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.