spark plug analysis


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
User avatar
aznyaz
Posts: 245
Joined: Sun Jul 29, 2012 12:36 pm
Location: Knoxville, Tennessee
Motorcycle: 1981 GL1100I

spark plug analysis

Postby aznyaz » Sat Sep 29, 2012 10:52 am



OK, I changed my plugs to the correct spec although most people would agree that the NGK DPR8EA9 plugs that were in there would not be a bad thing.

Looking at the plugs, they all seem pretty good except for #2, upper left corner of photo which shows some dark brown discoloration on one side of the insulator (the other side is white). Any thoughts on this? I'm gonna take it for a quick ride and see how it does.



User avatar
aznyaz
Posts: 245
Joined: Sun Jul 29, 2012 12:36 pm
Location: Knoxville, Tennessee
Motorcycle: 1981 GL1100I

Re: spark plug analysis

Postby aznyaz » Sat Sep 29, 2012 11:12 am

Here is the pic. See #2, upper left.
Attachments

User avatar
WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: spark plug analysis

Postby WingAdmin » Sat Sep 29, 2012 11:23 am

Looks like there might be a little bit of oil on the threads, too - is that true? You could have a leaky ring, or more likely, a leaky valve guide.

Have a look at the "how to read spark plugs" section just after step 20 on How to remove, analyze, gap and replace your spark plugs and see if it closely matches any of those.

User avatar
aznyaz
Posts: 245
Joined: Sun Jul 29, 2012 12:36 pm
Location: Knoxville, Tennessee
Motorcycle: 1981 GL1100I

Re: spark plug analysis

Postby aznyaz » Sat Sep 29, 2012 12:50 pm

There was a little dampness on all the plugs, almost negligible and the discoloration was just that, didn't even look like the deposits shown on that oil fowled plug in the "how to" photo.




Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: No registered users and 1 guest