Parts for your 2014 Toyota Land cruiser-Spark plugs

2014 Toyota Land Cruiser spark plugs: what’s fitted and how to look after them

Whether a 2014 Toyota Land Cruiser uses spark plugs depends on the engine. Technical sources such as Toyota owner’s manuals and service schedules note that petrol V8 models (e.g., URJ200 with the 3UR‑FE/1UR‑FE engines in various markets) are equipped with long‑life iridium spark plugs, while the 4.5‑litre twin‑turbo diesel V8 (VDJ200, 1VD‑FTV) common in Australia and New Zealand does not use spark plugs at all and instead relies on glow plugs for cold starting. Toyota’s Warranty & Maintenance Guides for petrol Land Cruisers specify periodic spark plug inspection and long replacement intervals, whereas diesel service literature lists glow plug checks and no spark plug service line item.

For Land Cruisers fitted with spark plugs (the petrol V8 variants), the plugs are the small but mighty bits that ignite the air–fuel mix every time the engine fires. On these models, Toyota fits long‑life iridium plugs designed to handle high heat and last a long time. Their job is to keep combustion crisp, so the engine pulls strongly, idles smoothly and sips as little fuel as practical.

Servicing wise, it pays to follow the plug interval in the owner’s manual for the specific engine code, as Toyota sets different mileages/kilometres based on plug type and market fuel quality. As a ballpark, modern iridium plugs often run well past 120,000 km, but it’s smart to have them checked earlier if the Land Cruiser is doing lots of towing, off‑road work, short trips or idling. A technician will look for worn electrodes, cracking, tracking, oiling, or incorrect gaps and will refit with the exact OEM‑spec heat range and part number. Avoid mixing brands or heat ranges across cylinders.

Signs that spark plugs on a petrol 2014 Land Cruiser are getting tired include rough idle, slower cranking, sluggish take‑off, a noticeable jump in fuel use, or the odd misfire under load. Left too long, tired plugs can stress ignition coils and catalytic converters, so timely replacement saves headaches.

Handy tips owners appreciate:

• Always use the factory‑specified iridium plugs and new crush washers where required.
• Have coil boots inspected and replaced if brittle or oil‑soaked.
• Request anti‑seize and torque procedures that match Toyota guidance for the specific alloy head and plug design.
• After deep‑water crossings or heavy dust, ask for an ignition system check at the next service.

If the vehicle is the VDJ200 diesel, spark plugs aren’t part of the equation. Diesel engines ignite fuel by compression heat, and the 1VD‑FTV uses glow plugs only to help with cold starts