Sexagenarian Posted September 7, 2013 #1 Posted September 7, 2013 My 97 RSTD manual states that the proper plug to use is the DPR7EA-9. Yesterday, I went to my Honda/Yammy dealer and told them I need plugs for a 97 RSTD and they gave me DPR8EA-9 which I didn't notice until this morning. Other forums state that the 8EA-9's are approximately 150 degrees colder than the 7EA-9's. My riding style is a lot of city traffic, 55mph county roads, and seldom do I get above 70mph. Should I take 'em back and ask why I didn't receive the 7EA-9's to begin with. Or is the difference minimal?
dacheedah Posted September 7, 2013 #2 Posted September 7, 2013 The yamaha parts site shows the updated plug is DPR7EA-9, a cold plug may cause carbon fouling. Personally I would have them exchange them.
MikeWa Posted September 7, 2013 #3 Posted September 7, 2013 The yamaha parts site shows the updated plug is DPR7EA-9, a cold plug may cause carbon fouling. Personally I would have them exchange them. +1 Mike
Sexagenarian Posted September 7, 2013 Author #4 Posted September 7, 2013 thank you for heads up!! I went back and they gladly changed switch them to the 7's for me.. thanks again!!
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