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Land Rover Discovery 1 2.0 Mpi petrol: spark plugs & ht leads

Ignition · Discovery 1 (1989–98) · 1993–1997

How often: every 12,000 mi or year, whichever comes first. Worn plugs on a 16-valve engine cause misfires and heavy fuel use.

Work safely: support the vehicle on axle stands, never a jack alone; let it cool first. Check figures against your workshop manual. You do this work at your own risk.

Parts

• 4 × Spark plugs (Check the handbook (gap ≈0.9 mm on the Rover T16 family))
• HT leads (if cracked)

Tools

• Plug socket
• Feeler gauge

Step by step

1. Remove the plug cover. Take each plug out in turn.
2. Gap or renew (Check the handbook (gap ≈0.9 mm on the Rover T16 family)).
3. Check each HT lead for cracks and a firm fit.

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