KymcoForum.com

General => Technical | How To => Topic started by: Stig / Major Tom on July 19, 2015, 02:20:50 AM

Title: Reading a spark plug....NGK
Post by: Stig / Major Tom on July 19, 2015, 02:20:50 AM

http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.asp?mode=nml (http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.asp?mode=nml)
Found this to be helpful over the years

Title: Re: Reading a spark plug....NGK
Post by: CROSSBOLT on July 19, 2015, 07:59:00 PM

One of the best ones so far. Thanks!

Karl

Title: Re: Reading a spark plug....NGK
Post by: Yager200i on July 20, 2015, 02:33:10 AM

Here is the spark plug related stuff I use.
(http://s28.postimg.org/jzi12flkt/Spark_Plug_Conditions.jpg)
(http://s24.postimg.org/ef5uudwr9/Common_Spark_Plug_Problems.jpg)
(http://s14.postimg.org/5awdfi269/Common_Spark_Plug_Problems_2.jpg)
(http://s29.postimg.org/nfxe05nk7/Heat_Range_Cross_Reference_Chart.jpg)

Title: Re: Reading a spark plug....NGK
Post by: Jeopardy4100 on July 20, 2015, 05:13:44 AM

Stig & Yag, thanks for the informative references.  Had just pulled the plugs on our boats kicker.  Just a bit rich according to the pics.  Thanks again

Title: Re: Reading a spark plug....NGK
Post by: Yager200i on July 22, 2015, 07:44:33 PM

It might not be too rich, your plug might be too cold of a heat range. Unless you're using the heat range recommended by the manufacturer, then it'd be too rich.

Title: Re: Reading a spark plug....NGK
Post by: Jeopardy4100 on July 23, 2015, 08:28:30 AM

It is the proper plug.  After reading your response I checked with boat mechanic.  He said Honda motors used primarily for trolling will show a slightly richer burn.  Guess we will have to open her up a few times.