Sparkplug problems............

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nastro azzurro
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Mon Mar 30, 2009 5:25 pm

Yesterday, on the ride out to the Ace Cafe, my scoot died. Plug out and no spark. Now ive had this before so I did not even take the HT cap off to check the lead was sparking. I just changed the plug, 1st kick and it started.
This is the third new plug in about 150 miles. Each time the plug stopped sparking.
Any body have any ideas why this is happening? Feels like i'm changing plugs more than stopping for petrol!
Plugs were NGK 9 and not all from the same supplier so I dont think its a bad batch problem.
Put a champion in it on the way home and then caned it from the Ace all the way back to Southend without a problem.
Any input would be appreciated.
Thanks.
Gav.

eibargum
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Mon Mar 30, 2009 5:58 pm

Ive had trouble in the past with NGK plugs packing in for no good reason, i think there abit highly strung, i changed back to champion but have sinced gone to nippon denso,s after i went down the RB route, ive never had a denso fail yet, i recomend you give them a try :D , regards.

camel
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Mon Mar 30, 2009 6:00 pm

go for an 8 rated plug..9 is a very hot plug.if the plug gets "wet" it can spark too the eye but not in the barrel,ive had this myself.

nastro azzurro
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Mon Mar 30, 2009 9:15 pm

Eibargum, Camel; thanks for the ideas. will give the nippon denso a go. Dont trust the NGKs any more! Dont fancy coming to a halt on the motorway on the way to Scarborough next week!

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paulmgreen
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Tue Mar 31, 2009 11:13 am

i use nippondenso in race scooter.... no probs........ I've had 2 NGK's fail in my road scooter.... so i don't think their qquality is as good as it used to be!
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eadmr04
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Tue Mar 31, 2009 12:57 pm

There was a post about this on the LCGB site a while back and quite a few people have had this problem with NGK's. I've had it happen 3 times now and have just bought a set of Nippons. One of the other people was having their scooter dyno'd at Taffspedd and it happened, Taffspeed refused to do any more dynoing unless he was willing to change to a different type of plug!

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jonny snatchsniffer
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Tue Mar 31, 2009 10:29 pm

ive had this before but with all types of plugs, but only when warm, turned out the flywheel had lost magnetism

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thackers
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Wed Apr 01, 2009 10:34 am

Hey guys i know it's a little off subject but i thought this might be good information for anyone else looking in with other plug problems, or perhaps the moderators might move it to the correct place 8-) :?:

http://www.dansmc.com/Spark_Plugs/Spark ... talog.html

nastro azzurro
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Wed Apr 01, 2009 7:11 pm

I'm wondering wether its an ignition problem now. Or am I starting to get paranoid! I seem to think this started after having the augusto fitted. Any body else experienced this after having augusto fitted?

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leigh
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Wed Apr 01, 2009 8:27 pm

nastro azzurro wrote:I'm wondering wether its an ignition problem now. Or am I starting to get paranoid! I seem to think this started after having the augusto fitted. Any body else experienced this after having augusto fitted?
Interesting just making enquires about one of these. Have you had probs with champion and the augusto.

Leigh

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