Plugs for a 1989 120 Evinrude

biglurr54

Petty Officer 1st Class
Joined
Feb 14, 2011
Messages
234
I am having problems with fouling plugs while idling with my motor. My grandfather had this issue with his old Evinrude and he kept coffee cans of plugs in the boat and swapped them out all the time. I figured since my motor is 15 years newer it wouldn't be as bad. Last year I put new plugs and wires on and I fouled a the new plugs already. Is there anything I can do to prevent the fouling? Is there a better plug that I can use like the Platinum or Iridium plugs? Will it make a difference? Plugs in a car will last 100kmi and even then its usually the wires that go bad so why do these outboards eat up the plugs? Thanks for your help!
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Plugs for a 1989 120 Evinrude

The mtr calls for Champion QL78YC 's. If you keep fouling them you could have some ignition or fuel probs. Or even compression probs.
 
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