525 EFI factory spark plugs
09-01-2009, 05:19 AM
#1
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525 EFI factory spark plugs
Does anyone know which NGK plug is installed by the factory? Also has anyone found a better plug, mine load up at idle? Thanks
09-01-2009, 08:58 AM
#2
I have a 525 but it has NGK's in it. I remember asking a Merc rep if there was a better plug than a NGK for my Merc 2.5 outboard? He said, Not if you want it to run. 
Doug
Doug
09-01-2009, 11:53 AM
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On the engine the sticker they say BPR6ES , mine run BPR5ES , i know the the 5 and 6 mean hotter or cooler , when i bought the boat he come with it ....never a problem so far
Christian
Christian
