Thread: Bosch Platinum +4 Spark Plug Experienced..?
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  #14  
Old 02-05-2002, 07:46 PM
jasondew jasondew is offline
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Join Date: Jan 2002
Location: Grand Rapids, MI
Posts: 150
when i upgraded to jacob's 8.5mm silicone plug wires and kept my platinum 4+ plugs, in the first day, 2 of the 4 plugs on my 16v cracked, resulting in horrible misfire since the spark was just jumping over to the cylinder head. these were new plugs too. i put bosch copper plugs in and have had absolutely no problem since.
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dew
86' 190e 2.3L 16v
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