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.
1986 Suzuki Samurai BaseFACTORY OEM SERVICE PROCEDURE
Three-Way Solenoid Valve (TWSV)
- Disconnect the hoses connecting the TWSV to the EGR valve and the EGR modulator. Connect test hoses to the TWSV. See Fig 1 . Blow into test hose No. 1, checking that air escapes from test hose No. 2.
- Disconnect TWSV electrical connector and connect 12-volt battery to connector terminals. See Fig 1 . With battery connected, blow into test hose No. 1, checking that air escapes from TWSV filter and not test hose No. 2. If TWSV does not operate properly, replace with a new unit. Reconnect hoses and electrical connector.
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.