Originally Posted By WedgeFED
Plugs will tell you all you need to know... Use a new plug somewhere in motor(any cylinder will work) for each fuel or timing change. It makes it much easier to read.



Got bigger problems now ..changed my old have a 12 qt. Pan put in 10 qts Rotella t6 drain oil in have about 12 13 qts rest is alky..I'm bout done with this lol but new with it at the same time