1991 200 johnson spark plug question

[zacdavidson300]

I have a 1991 johnson 200-- E200STLEID--- The motor seems to be short on power for some reason. I though that maybe the plugs were fouled so i pulled all 6 plugs out and noticed that 5 of the plugs were covered in burnt oil and were black, but the other plug was very clean looked like new. I put these plugs in at the same time so they have all been in the same amount of time. Any idea what might be the significance of this? and does this give any idea as to way i might be not getting all of the power from the motor?

[ChampioNman]

What kind of plugs?

[zacdavidson300]

they are autolite plugs

[ChampioNman]

Loose them or use them for plug knockers. Put in Champion QL77JC4 gapped at .030.

[zacdavidson300]

i will look into the champions. Any thoughts on the one plug being completely clean and the others being really dirty?

[Bassmeister]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by zacdavidson300 &raquo;</td></tr><tr><td class="quote">i will look into the champions. Any thoughts on the one plug being completely clean and the others being really dirty?</td></tr></table>
Zac, I would run a compression check on that clyinder with the clean plug. Sounds like lack of fuel or spark..... Go with the Champion plugs.

[zacdavidson300]

will do mike. Anybody local that can do the compression test for me?


Modified by zacdavidson300 at 5:46 PM 5/16/2010