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NGK BP5ES or BP6ES

Johnny wick
Johnny wick
in Engine & Drivetrain

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Posted
comment_521635

My 1972 240z has a Schneider 274F cam and pertronix 1761 ignitor module and coil. Should i use NGK BP5ES or BP6ES? to avoid carbón fouling at idle during traffic jams? or a hotter spark plug will still get fouled under fuel percolation situations?  

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