Best spark plugs for '73 mercruiser 165 I-6

[TJDave]

Getting ready to change the plugs in my boat. The plugs in it have been there for the 7 years I have had the boat, but it runs fine. I just figured it was time. Looking for some advise from the Pro's on what is the best plug for this motor? I don't even know what plugs are in there now because I have never even had a plug wire off. The 'ole girl just keeps on going and going! Thank-you for any replies, Dave.

 

[Bondo]

Re: Best spark plugs for '73 mercruiser 165 I-6

The plugs in it have been there for the 7 years I have had the boat, but it runs fine.

Ayuh,... You want 6 new copies of those sparkplugs Right there......

You might want to Ohm the wires while your at it,.. Just to see if they're breaking down....

 

[TJDave]

Re: Best spark plugs for '73 mercruiser 165 I-6

^Very good point sir. I'll check the plug wires and replace the plugs with what has been working. Thank-you!