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Remove Tip of Spark Plugs??? 200 1991

Shade:

My Bentley manual shows .28 to .32 as the correct gap. Thats what I use on my 90 240DL wagon. You can't count on the plug coming with the correct gap so I always check each one and adjust if necessary.

The wires should attach to the plug with the tip screwed on. Sometimes the steel connector within the insulated rubber tip gets off center ( or the connector gets crushed in shipping) making it impossible to attach to the plug. That might be the problem. If you can't get the wires connected with the plug tip in place take them back.

The wrong gap and wires attached to the plug without the tip in place can certainly cause the rough idle/performance you describe.

While expensive the factory Volvo wires are really first rate.

Hope this helps.

Jerry Judge






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