MODERN WORKSHOP
Replacing the spark plugs and air filter on the X100-generation XK8 4.0 Find out what’s involved in changing the air filter and the eight spark plugs on the X100-generation XK8’s 4.0-litre V8 engine and what problems can arise
WO R D S & P H OTO G R A P H Y R O B H AW K I N S
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IGHT SPARK plugs can take longer than expected when you need to remove and replace them, but thankfully, there’s plenty of space inside the engine bay of the X100generation XK8, so the biggest worry you face is dropping some of the small bolts that hold the covers and coil packs down into the depths of the V8. The spark plugs on the XK8 should be replaced every 100,000 miles, which means that in many cases, they never get changed because the car’s mileage never reaches six figures. The air filter on the other hand, should be replaced every 10,000 miles. Typical problems that can arise when changing the spark plugs concern what you may find. Oil leaks via the camshaft
covers are not uncommon, which can seep down and around the spark plugs. Spills from topping up the coolant in the nearby expansion tank can also leave a puddle around the adjacent spark plug hole. We spoke to North Wales Jag Centre about the small oil leak we’d found on the XK8 in our photographs, but proprietor Matt Norbury said that providing the oil is only a small amount, it can be lived with for now.
THANKS TO
DOING IT YOURSELF Difficulty Time required: 1.5 hours On your own? Yes
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North Wales Jag Centre Unit 2, Cae-Bach Builder Street Llandudno LL30 1DR Tel: 01492 870150 Website: www.northwalesjag.co.uk
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Paper towel/cloth Penetrating fluid Plastic trim tools Rubber hose (8mm internal diameter) Screwdrivers Spanners/sockets: 7 and 8mm, 16mm spark plug socket Torch Torque wrench
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90 | Jaguar World / May 2022
