Parts for your 1986 Suzuki Jimny-Egr valve

1986 Suzuki Jimny (Sierra) EGR valve — is it actually there?

Short answer for Australia and New Zealand–delivered vehicles: the 1986 Suzuki Jimny/Sierra generally wasn’t fitted with an EGR (Exhaust Gas Recirculation) valve from factory. Suzuki’s AU/NZ workshop literature for the SJ410 (F10A 1.0-litre) and SJ413 (G13A 1.3-litre) carb models lists emission controls such as PCV, evaporative canister, pulse‑air/air‑suction (ASV) and, on later unleaded models, a catalytic converter — but no EGR hardware. By contrast, the North American Samurai service manuals for the same era specify an EGR valve and control gear to meet US EPA rules. That market split lines up with the period standards: ADR 27A (and ADR 37/00 as unleaded arrived) allowed manufacturers to meet NOx and HC limits without EGR if they could achieve it via calibration and other devices. Technical references: Suzuki Sierra/SJ413 Workshop Manual (AU/NZ, Emission Control section), Suzuki Samurai Service Manual (North America, Emission Control section), ADR 27A and ADR 37/00 emissions requirements.

Why no EGR on AU/NZ 1986 Jimny? The small-displacement, low-compression carb engines ran conservative ignition timing and relatively lean mixtures, and used pulse‑air injection and a charcoal canister to clean up the tailpipe. That combo was enough to pass local NOx limits without the extra plumbing, heat and vacuum control complexity of an EGR valve. It also kept drivability and hot‑soak behaviour tidy for off‑road use in hot Aussie and Kiwi conditions.

What should owners service instead of an EGR valve? Stick to the emissions gear it does have:

• PCV valve: make sure it rattles freely and hoses aren’t split.
• Evap canister: check purge lines and vacuum routing, replace cracked hoses.
• Air‑suction (ASV/pulse air): inspect reed valve and manifolds for leaks that can cause popping or lean stumble.
• Carb tune and timing: correct base timing and mixture are key to emissions and smooth running.

Not in Australia or NZ? Or got a used import in NZ? Some Japanese‑domestic or North American Jimny/Samurai variants did come with EGR. If there’s a metal valve on the inlet manifold with a finger‑thick steel pipe running back to the exhaust, plus a vacuum diaphragm and modulator, that’s EGR — keep the passages decarboned, ensure the diaphragm holds vacuum, and replace per the market’s service schedule. If the manifold face is smooth with no exhaust feed pipe and no vacuum‑operated valve, your 1986 Jimny doesn’t use an EGR valve.

Technical sources (no outbound links): Suzuki Sierra/SJ413 Workshop Manual (AU/NZ, Emission Control), Suzuki SJ410 Service Manual, Suzuki Samurai Service Manual (North America, Emission Control—EGR system), Australian Design Rules ADR 27A and ADR 37/00.

Popular questions about the 1986 Suzuki Jimny EGR valve

1) Did the 1986 Suzuki Jimny/Sierra in Australia or New Zealand have an EGR valve?
Typically no. AU/NZ workshop manuals for SJ410/SJ413 list PCV, evap canister and pulse‑air systems, but no EGR. US‑market Samurai manuals of the same era do show an EGR valve, so imports can differ. If yours is AU‑new and unmodified, it likely doesn’t have EGR.

2) How can someone tell if their 1986 Jimny actually has EGR?
Look for a small, flying‑saucer‑shaped valve on the inlet manifold with a steel pipe feeding from the exhaust and a vacuum hose on top. No valve and no exhaust feed pipe usually means no EGR. Many NZ grey‑imports and engine swaps can blur the lines, so a quick visual under the bonnet beats guessing by year alone.

3) Is it legal to remove or add an EGR valve on a 1986 Jimny?
If a vehicle was factory‑equipped for its market, tampering with or deleting emissions gear is generally illegal and can fail inspection. If your AU/NZ‑delivered 1986 Jimny wasn’t built with EGR, you don’t need to retrofit it. For imports or modified vehicles, check local regs or talk to a licensed certifier before making changes.