Spark Plugs

[TQUIN45]

Hi- I noticed my 1988 150 Hp Evinrude would like(manual recommendation)) the center fire plugs QUL77V vs the QL77JC4 plugs I found installed. Does it matter??? Any help or recommendations would be great.<br />Thank you again<br />Tom Quinn

 

[muskrat]

Re: Spark Plugs

stay with gaped plug,surface gaped plugs foul easy.