Which Spark Plug Do I Need??

[jasonjmccoy]

Motor is a Merc 18XD. Parts list states you can use either a NGK BUHW or Champion L76V or Champion L20V.

The plugs that were in the motor were NGK BUHW but I can't find those at any of the stores I've been to, they only have BUHW-1 and I'm not sure if that's the same or not. Also not sure what the difference between the 2 Champion plugs is??? And now for a dumb question, the BUHW is one of those plugs without an electrode, but I still see a gap listing on the box, how in the world do you gap those things??

 

[Dave1027]

Re: Which Spark Plug Do I Need??

Quick search says your motor takes this plug http://www.iboats.com/mall/partfind...gd_poid=175577&gd_row=57&session_id=156732052

You cannot gap surface gap plugs. They do still have a gap between the ground and electrode. It's just that it's fixed. There is gap (noun) and then there is gap (verb).