which plug for 1986 johnson 150

25whaler

Seaman Apprentice
Joined
Nov 24, 2003
Messages
33
What is the latest recomendation (champion) plug for this motor. Including all updates. Also what gap. Thanks in advance. I am using the surface gap and would like to use a gap plug if possible (ql77jc4??) please let me know. Reason is I do troll low speeds and surface gap I know will foul.
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: which plug for 1986 johnson 150

Use Champion QL77JC4 plugs, setting the gap to .040 .
 
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