best sparkplug

9

91coyote

Recruit
Joined
May 31, 2009
Messages
1
Does anyone have any advice as to the best sparkplug for a 1978 OMC 140 Stringer (4cyl. Chev) woukd be.
 
mkast

mkast

Lieutenant Commander
Joined
Nov 6, 2002
Messages
1,934
Re: best sparkplug

Sure, the plug listed in the maintenance manual.
 
Yachtsman1304

Yachtsman1304

Seaman
Joined
Mar 2, 2009
Messages
67
Re: best sparkplug

The correct cross-referenced NGK plug (hopefully they have one). I run NGK in everything and they work great.
 
proshadetree

proshadetree

Lieutenant Commander
Joined
Jul 19, 2008
Messages
1,887
Re: best sparkplug

Depends if you have factory ignition or aftermarket.Breaker less with a hotter coil and you run a colder plug.How is your plug reading?Dry black.Wet black, tan?As far as brand any one you like.
 
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