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The new spark plug connectors have largely been left out of the conversations regarding the new spark plugs.  From what I can tell, the old connector (265-248) is no longer being sold.  And since you can’t mix and match the new and old connectors, if you have one go bad you need to replace all eight with the new style.  The new connector (265-249) is advertised as “Suppressed”.  Were the old ones also suppressed or are the new ones of a different resistance value?

  • Re: New Spark Plug Connectors

    by » 4 months ago


    Hi Jeff

    Both the NGK and the PVL connector have a 5K ohm resistor internally.  Given that Rotax can no longer use the NGK all new engines and new stock are now the PVL brand.  There is no technical reason you could not mix them as the resistors are the same value.  The major difference is the slight angle change from the NGK 45 (I think that is what it is) to the PVL 90 degree connection.  Please be careful when pulling on any of the connectors, it should be done on the main barrel by the plug rather than on the angle.  This will reduce damage to the resistor internally.  

    Cheers

    29972_2_spark boot tool for removal.jpg (You do not have access to download this file.)
    29972_2_new plugs and connectors SI-912-027_SI-912i-013_SI-914-028_Introduction of new spark plug part no. 297656 and spark plug connector part no. 265249 for ROTAX Engine Type 912 i 912 and (You do not have access to download this file.)

    Thank you said by: Jeff Blakeslee, RotaxOwner Admin

  • Re: New Spark Plug Connectors

    by » 4 months ago


    Thank you for the response, I suspected the connector resistance would have to be the same since Rotax allows the use of either connector with either plug.  The NGK spark plug specs indicates it also has a 5K Ohm resister.  That information is not published for the new Rotax plug, but I measured a couple and they read 6K Ohms.  So both combinations are very similar, using suppressors in both the connector and plug.  


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