Pull the supressors off the coil packs and check the resistance of the supressor. It should be around 2000ohms (it'll be written on the side of the supressor if they're genuine.) Any that vary greatly from the norm should be replaced. don't expect them to read right on 2000ohms, they will vary and still be ok.

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Alex.

MB Tech
Sydney, Australia
Volvo 122S
W201 190D 2.5 manual
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