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.
1987 Toyota 4Runner SR5, 22-RTEFACTORY OEM SERVICE PROCEDURE
Land Cruiser
- Warm up engine. Disconnect vacuum hose from the distributor sub-diaphragm and plug hose end. Check ignition timing at idle. Ignition timing should be 7 degrees BTDC. See Fig 1. Reconnect hose to sub-diaphragm. Verify that timing mark on flywheel advances to 6 degrees.
- Disconnect the vacuum hose from Black side of check valve. Plug end of hose. Ignition timing must remain stationary for more than one minute. If timing changes, replace check valve. Stop engine and reconnect hose to check valve.
- Disconnect 3 hoses on top of HAC valve. Blow air into each hose and check that air flows into carburetor. Reconnect hoses to proper locations.
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.