Thanks for taking the time to read and reply to my post, Jack.
Well, you've got me thinking. On the last service i bought and fitted volvo plugs. The actual ones recommended. They have three points on them. It ran awfully after that, can't say i was surprised because the plug gap was enormous!!!
After a few days i bought a new set of bosch super fours, which i had a set of prior to the service with no trouble. After these the car ran better but this issue remained.
I have heard others say multipoint plugs were a pain or noticed no benefit. They seem to rate NGK or Bosch single pointed ones, do you have any further recommendations?
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