Frank47
XS650 Enthusiast
Just back from short ride to beach before WX moves in. Engine started running rough. Fresh non ethanol gas, new plugs, air filters clean. Besides rechecking plugs & using carb cleaner, what else should I check?
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Running rough
- Thread starter Frank47
- Start date
When a previously good running bike begins to run rough for no apparent reason, I like to change fuel first before messing with the carbs. You stated fresh gas but: https://content.govdelivery.com/accounts/FLDAC/bulletins/36d129a
Frank47
XS650 Enthusiast
Frank47
XS650 Enthusiast
Thanks, non ethanol from Navarre Wal Mart wasn’t on the list. But I can siphon & refill.
WAAAAAAAAY too rich. You didn't leave the choke on, did you?
Frank47
XS650 Enthusiast
No, cleaning & trying again.
JJames
XS650 Addict
Yeah. Perty sooty. Really looking like choke maybee left on. Anyhow when checking plugs the bike needs to be shut off without idling after running at "higher" rpm.
Frank47
XS650 Enthusiast
NGK BP7ES weren’t available at 3 local auto parts. One sold me NGK resistor plugs & said would work. Nope. Apparently ceramic insulator too cold for spark for this bike. Cleaned old plugs & running good. Ordered new ones from Amazon. Thanks for help guys, I’ll be back soon with more questions.
You may have trouble finding the BP7ES plugs in the U.S. now. For some reason, NGK has discontinued them. But, you can still get them from Europe or the U.K. They sell them there but under a new stock number, 2412. Here's a box I ordered on eBay from England .....
You can also buy some NGK LZFH caps. They're non-resistor caps. Then you can run the resistor plugs. I generally keep both combinations on hand.
From what I remember on plug theory, the size of the insulator determines the heat range, so I'm doubtful the resistance has much effect.
I can tell you that when the supply of D8EA NGK's runs-out the CB crowd is gonna shit; as the long-reach plug caps required on 750 fours (and others) are unobtainium in non-resistor
Don't know what's -up at NGK; about all of their non-resistor products - plugs and caps - are discontinued
Agreed about the long reach...but I was mostly speaking of the CB350 crowd, we're going through same issues with non-resistor plugs in that arena as well.I can tell you that when the supply of D8EA NGK's runs-out the CB crowd is gonna shit; as the long-reach plug caps required on 750 fours (and others) are unobtainium in non-resistor
Don't know what's -up at NGK; about all of their non-resistor products - plugs and caps - are discontinued
I think its all about supply and demand...not enough demand to cater to the non-resistor audience any longer. We're all being phased out like the dinosaurs.
Accel plug wires?
