Hello, I am a new member looking for some help. I have a 2013 Mercuiser 4.3 TKS (1A634623). I have seen a lot of conflicting information on spark plugs and gaps, by way of the owners manual, service bulletins, and of course Mercury's parts list has a completely different plug. In any event, I just installed 6 AC-41-993 (Iridium) plugs gapped to 1.14mm / .045" Are these OK or do I need to put a different set in?
Thanks
Thanks