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Re: Spark Plugs

posted by  someone claiming to be Dave the Volvo Tech on  Mon Mar 12 15:23 CST 2001 [RELATED]

Steve-

When the I5 motors first came out, they used a copper core plug with one ground electrode. Turbo or no, same plug. Then they had some issues with the non-turbo cars fouling the plugs on a cold start. The solution was a multi-electrode plug. At the same time, they went to a 'dual-platinum' plug for the turbo engines. Volvo now has two distinct spark plugs for the 'white motor', depending on whether it is turbo or normally aspirated. Same plug for 4/5/6 cylinders respectively. The correct plug is the one the manufacturer specifies.

Dave the Volvo Tech

'99 V70R AWD, '93 854 GLT, '82 242 DL





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