How-To Guide on replacing your spark plugs and spark plug wires on Mazda RX-8 vehicles. RX-8. While changing spark plugs on most vehicles is an easy task for some, there are some vehicles that are just a little different and make you go: umm…. Well, the RX-8 is definitely one of those vehicles! The RX-8 is an amazing car; it has stellar handling, a lightweight chassis, good looks, four doors, and last but not least a Mazda exclusive rotary engine. While there are a few different vehicle layouts, such as: Front wheel drive, rear wheel drive, all wheel drive, front engine, mid engine, rear engine, they all typically utilize a piston driven internal combustion engine. That is where the RX-8 differs. Like its RX-7 predecessors, the Mazda RX-8 employs a unique style of engine called a Rotary, invented by German engineer Felix Wankel in the (more…)

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The ‘I4′ DOHC engine first introduced in the Ford Sierra and Granada models of late 1989 was only available in the Sierra in 2.0-litre 8-valve form. While power output improvements can be made to the stock 2.0 8v engine, as documented in a separate article entitled ‘DOHC tuning’ and available from http://www.crustworld.co.uk/sierra/dohctuning.pdf, the engine output is ultimately limited by the availability and cost-effectiveness of off-the-shelf tuning parts.
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The Pathfinder was first launched in 1987 as a derivative of Nissan’s pickup truck line. Available initially as a two-door, it was joined by a four-door version in 1990, which has been the sole body style since 1991. The original Pathfinder changed very little on the outside during its life, but was treated to a new dash and interior design in 1994. Whereas the first-generation Pathfinder was a body-on-frame design, the all-new 1996 Pathfinder featured unibody construction. In mid-1999, the Pathfinder, designated as a 1999.5 model, was face-lifted and moved upmarket. Nissan slotted its new Frontier pickup-based body-on-frame Xterra into the space in the lineup vacated by the old base model Pathfinder.
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