Golden Time
New member
Some of you may know that I recently had an engine problem that was narrowed down to the spark plugs.
In my search for replacement plugs I was in a (motorbike) shop and handed over the spark plug for them to look for one. The chap said that my engine was running too rich because of the colour of my plugs. He said they should be the colour of a rich tea biscuit not black.
Is he right that the engine is running too rich? Should I try to make it a bit more lean or leave well alone? If it should be more lean how do I do it?
The outboard is a Honda 9.9 and I have no idea about service history, so they could have been super old plugs.
In my search for replacement plugs I was in a (motorbike) shop and handed over the spark plug for them to look for one. The chap said that my engine was running too rich because of the colour of my plugs. He said they should be the colour of a rich tea biscuit not black.
![IMG_0648_zps237c62da.jpg](/proxy.php?image=http%3A%2F%2Fi1161.photobucket.com%2Falbums%2Fq503%2Fbigfoot-daniel%2FIMG_0648_zps237c62da.jpg&hash=33707d722b7e9f28d29f6c1ccd1124f7)
![IMG_0647_zps039648b3.jpg](/proxy.php?image=http%3A%2F%2Fi1161.photobucket.com%2Falbums%2Fq503%2Fbigfoot-daniel%2FIMG_0647_zps039648b3.jpg&hash=dc0faffdaaf42ad9df53d01eb97bd0d2)
Is he right that the engine is running too rich? Should I try to make it a bit more lean or leave well alone? If it should be more lean how do I do it?
The outboard is a Honda 9.9 and I have no idea about service history, so they could have been super old plugs.