Spark Plug tutorial ??

[fast351]

Originally Posted by nosman1

First off, it's best to get a plug read in this fashion...

Warm engine on old plugs..
Put new plugs in and tow to lanes..
Make your run and cut off..
TOW back and remove ALL 8 plugs to read each...

The top two look like they still have a little fuel that could be cleaned up ?? But also need to watch the timing as you lean it down as it looks as though the timing is starting to turn the corner of the bends...

The next 4 NGK's look like there a little uneven on there fuel as well as the timing marks need to be equaled out. This can be done by the jetting in that cylinder or with individual cylinder timing...

Just a little of my two cents... SJ

Very good info.. This is the type of info I been looking for.. Is the fuel ring suppose to be dark or light in color? Also who sells a quality spark plug mag/lite?