'87 175HP Mariner...Changes spark plugs..quick question.

[apaseman]

When I changed my spark plugs yesterday, there was a bit of oil on them, not a lot, just a bit. They all had about the same 'cept one, which had a bit more than the others. Again, even this one wasn't covered in oil, just for some reason seemed to have a bi more than the others. Is this a problem?

Just for the record, I am mixing 50:1 directly into the tank as the oil injection system has been disabled by the original owner.

 

[section8]

Re: '87 175HP Mariner...Changes spark plugs..quick question.

wish someone smarter would see this. im curious what they will say

 

[ClassyGlassy]

Re: '87 175HP Mariner...Changes spark plugs..quick question.

Plugs should look wet when burning properly, dry when running too lean, and dripping when running too rich.

There is only 1 way oil gets into the cylinders and that is through the fuel! If the wet plug continues, look at going up 1 heat circuit on the plugs.

 

[apaseman]

Re: '87 175HP Mariner...Changes spark plugs..quick question.

I wouldn't say they were dripping. Wet yes, but just the one had a bit more than the others, however now that I think about it, that one was a little looser than the others as well, so that might have played into it? I will keep an eye out and pull the new ones in a few weeks to see how wet they look. Unfortunately, I have no basis of comparison as I do not know what too wet is...

 

[ClassyGlassy]

Re: '87 175HP Mariner...Changes spark plugs..quick question.

dripping and dark is too wet.......