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Trying to determine if there is a problem

  • Thread starter Thread starter MAJikMARCer
  • Start date Start date
mike_of_bbg said:
I use a 13/16" plug socket on mine all the time... NGK B8ES plugs, right?
Click to expand...
No.
cowboyup3371 said:
Yea, 13/16 spark plug socket is the correct one.
Click to expand...
Not on the 650.
noway.gif


It uses D8EA plugs, which are much smaller. :p

.
 
Ah, so, oh wise and experienced one...

I knew most (if not all) of the later 16V motors used the smaller plugs.
 
Steve said:
No.

Not on the 650.

It uses D8EA plugs, which are much smaller. :p

.
Click to expand...

I can confirm that the 18mm socket DOES fit the D8EA plugs on my bike. I can't turn it yet until I make another run to the store but it does fit properly.

The more you know...
 
Plug condition

Plug condition

I finally got the plugs out of the bike, one at a time. I checked their gaps and they are right on. They are all D8EA, so that's all good.

But I'm not sure about the color/condition. They seem a bit sooty to me, but not terrible. Thoughts/opinions?
P1010003.jpg

P1010004.jpg

P1010006.jpg

P1010007.jpg

You can ignore the allen keys, they were just there to help me keep track of which plug was which when I get back to the computer to look at the pictures.
 
Yes, the insulators all look pretty dark. Clean your air filter, make sure it isn't over-oiled. Check the voltage at the coils (O/W wire) vs. battery voltage. Determine how many turns the idle screws go in to lightly seated and compare to the recommended initial settings in this thread for your model:

http://www.thegsresources.com/_forum/showthread.php?t=73723

The initial settings are usually a little rich. If it's still rich after all that you'll need to check float heights and confirm the jet sizes.
 
Okay how are you riding your bike? You lugging it around town which would darken up the plugs or highway speeds? If it is highway speeds they are just a tad rich though not seriously. Other then that they don't look that bad at all. Your riding style will have an effect on the plugs don't forget.
 
mrbill5491 said:
Okay how are you riding your bike? You lugging it around town which would darken up the plugs or highway speeds? If it is highway speeds they are just a tad rich though not seriously. Other then that they don't look that bad at all. Your riding style will have an effect on the plugs don't forget.
Click to expand...

I've only put about 50 miles on the bike myself since I got it, and mostly those have been city riding and yes I've been lugging it a bit. I'm getting better about that, but I don't like to scream her down the street in my neighborhood.

At this point I can't be sure how much hwy riding I will do. I'd guess for the next month or two that I'd be mostly riding around in town.

I also talked to the PO and he said changed the plugs last year when he rebuilt the carbs. I can't say how he rode the bike.

Would I be better of buying new plugs at this point or are these good enough for now? I'm guessing I wouldnt see a ton of difference.
 
Take it out and run it up to redline a few times, afterwards a few less RPM's will seem normal. Blow out that carbon!
 
sedelen said:
Take it out and run it up to redline a few times, afterwards a few less RPM's will seem normal. Blow out that carbon!
Click to expand...

So kinda like my car I need to take her out and run her hard and hot for a bit to clean out the gunk? (That sentence sounds really wrong. LOL)
 
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