captainpete Posted July 8, 2014 Posted July 8, 2014 hi i have a 1999 90 hp johnson the manual says champion QL78YC but i have heard champion are not the best plug and they are not stocked in most shops.when i look up the coversion to ngk from 2 different websits i get BPZ8HS-10 or BPR7HS but the plugs i have in at presant are BPR6H.in the ngk the r stands for resistor do i need that so my electronics dont get interference im little confused cheers peter
a boat Posted July 8, 2014 Posted July 8, 2014 Hi, the OIS system on your engine needs the QL78YC and as for most shops, can not comment on what you have found, but ALOT of E/J used this ignition back in the day so if they do not carry them-more fool them and in any industry you get good places and bad places-this industry tends to have more of the latter unfortunately. You will "hear" all sorts of things on the internet and most things I "hear" are complete rubbish. Cheers, Huey.
captainpete Posted July 8, 2014 Author Posted July 8, 2014 thanks for the fast repley craig i will take your advise and change them when i replace my impellor in a few months ill be in contact cheers peter
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