The Ford Barn - View Single Post

RichPA · 03-19-2013, 04:49 PM

It's hard to tell by eye, use a spark tester. If you don't have one take an old plug, widen the gap to about 1/4 " and retest the way you are doing. If it jumps a large gap it's not weak.

03-19-2013, 04:49 PM	#3
RichPA Senior Member Join Date: Sep 2010 Location: rowland PA Posts: 186	Re: Weak Spark Problem It's hard to tell by eye, use a spark tester. If you don't have one take an old plug, widen the gap to about 1/4 " and retest the way you are doing. If it jumps a large gap it's not weak.