"Chuck" wrote in message
news:v_2dk.190760$TT4.166948@attbi_s22...

wrote in message
...
On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" wrote:

I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs.
I
think my plugs look too "wet" much like the third one shown in the photo
on
the NGK website.
http://www.ngksparkplugs.com/techinf...200&country=US

Although the motor runs pretty smoothly. I running with a 130 degree
thermostat. What should I look at adjusting?

Chuck


Before I got crazy and tried to "fix" a motor that was running well I
would ask, how far did you have to idle back to the ramp before you
pulled these plugs?
If this is running well other the entire range I might try a little
hotter plug, if it is loading up when you idle you could play with the
idle screws a little but be careful you don't break it.

I see your point about the idling...... it took me at least 10 minutes
running at idle rpm. I never thought of that. BTW, this is an automatic
oil injection system and so I cant adjust the fuel/oil mixture ratio.
To check the plugs you need to run at a cruising speed and then shutdown,
pull the plugs and take a look at them. Idling around for anytime is going
to load them up on a 2 stroke.