Parts for your 1998 Daihatsu Gran move-Spark plugs

1998 Daihatsu Gran Move Spark Plugs – Purpose, Service Tips, and Fitment

Yes, spark plugs are used on the 1998 Daihatsu Gran Move. Technical references confirm it runs petrol four-cylinder engines (as sold globally under Gran Move/Pyzar), which require spark plugs. The Daihatsu factory service manual for Pyzar/Gran Move models lists plug inspection and replacement in the maintenance schedule, and major plug manufacturers catalogue exact part numbers for this vehicle—examples include NGK BKR6E-11 and Denso K20PR-U11 with a 1.1 mm gap, and iridium equivalents (NGK BKR6EIX-11, Denso IK20). These sources make it clear the vehicle is spark-plug equipped.

On the Gran Move, spark plugs ignite the air–fuel mix, helping the 1.3–1.5-litre petrol engine fire cleanly, idle smoothly, and deliver decent fuel economy. Healthy plugs mean easier cold starts, steadier power, and fewer misfires. Because plugs sit inside an alloy head and live in a hot, high-pressure space, they’re a small part that does a big job every second the engine runs.

For routine servicing, the Gran Move benefits from periodic inspection and timely replacement. Copper or nickel plugs deliver great value but wear faster, iridium or platinum options last much longer and hold their gap better, making them a solid choice for owners who want fewer replacements between services.

• Suggested intervals: inspect every 10,000–15,000 km, replace copper/nickel plugs around 20,000–30,000 km, iridium/platinum typically 60,000–100,000 km. Always align with the service manual and usage conditions.
• Correct gap: commonly 1.1 mm as catalogued (e.g., NGK “-11” and Denso “-11” codes). Do not regap fine-wire iridium unless the manufacturer allows it.
• Torque: many M14 gasket-seat plugs specify around 18–22 N·m in an aluminium head. Fit by hand first to avoid cross-threading, then torque to spec. Avoid anti-seize unless the plug maker explicitly recommends it.
• Watch for symptoms: rough idle, harder starting, higher fuel use, hesitation under load, or visible fouling on plug tips.

A careful plug change—clean wells, check leads/coils, and confirm gap/type—keeps the Gran Move perky around town and steady on the open road. Sticking with well-known brands and the specified heat range helps the little MPV stay reliable in Aussie and Kiwi conditions.

FAQ

What spark plug type and gap suit a 1998 Daihatsu Gran Move?
Commonly catalogued options include NGK BKR6E-11 (standard) or BKR6EIX-11 (iridium), and Denso K20PR-U11 (standard) or IK20 (iridium). The typical gap specified by these catalogues is 1.1 mm. Always match the heat range and thread dimensions listed for the exact engine code.

How often should spark plugs be replaced on a 1998 Gran Move?
For standard copper/nickel plugs, many owners change them around 20,000–30,000 km. Iridium or platinum types often run 60,000–100,000 km. Short-trip, dusty, or hot conditions can shorten intervals, so regular inspection during routine servicing is smart.

What are the signs the Gran Move’s plugs are due?
Tell-tales include rough idle, sluggish acceleration, a drop in fuel economy, harder starts, and a flashing or steady check-engine light for misfire codes. Pulling the plugs may reveal worn electrodes, heavy deposits, or oil fouling—clear signals it’s time to refresh them.