What NGK plugs fit the 83 650gl.There was D8EA in it when I bought it put same in and starting to misfire and run poorly.Got NGK catalogue and says DR8ES-L which is correct.
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1983 GS 650 gl
1982 GS 850 gl
1980 GS 550L
1982 GS 650 G(KATANA)
Gsx 1400 daily ride -
The answer can be found on page 2-10 of the factory Suzuki service manual for your bike...
gs650 spark plugs.jpg
FWIW: the D8EA is a smaller diameter plug than the more common D8ES. Rule of thumb is all the 2V/cylinder GS bikes, excepting for the 650, use the D8ES, whereas the 4V/cylinder bikes used the smaller D8EA plugs.
R plugs, which stands for resistor, are not ideal since the plug cap already has a resistor. Generally speaking they won't hurt anything though.Last edited by Nessism; 06-19-2021, 02:38 PM.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
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