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  1. January 29th, 2012, 01:13 PM #1
    loafie
    [OP] loafie is offline
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    Default f115 spark plug question

    i know an 06 f115 uses an lfr6a-11 ngk. a friend has a 4 pak of lfr5a iridium plugs for $20. has anyone used the hotter range lfr5 on an f115. thanks
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  2. January 29th, 2012, 10:35 PM #2
    SparkieBoat
    SparkieBoat is offline
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    Default Re: f115 spark plug question

    stay with the ones you are supposed to use.
    Free ignition troubleshooting guide http://issuu.com/cdielectronics/docs...owFlipBtn=true
    You will need a DVA adapter http://www.usatoolwarehouse.com/usat...e/ESI-640.html First test compression, Second test spark with a spark gap tester set a 7/16 gap, Third check timing, next CLEAN your carbs properly,
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  3. January 30th, 2012, 08:30 AM #3
    robert graham
    robert graham is offline
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    Default Re: f115 spark plug question

    Much better to stay with the specified heat range plugs. Why are you even changing the plugs...the one's in the motor will run for a long time, providing there's no problems with the motor. Good Luck!
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