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spark plug query
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- Hardcore
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- Location: edinburgh
spark plug query
If you find your bike is fouling up a wee bit after prolonged low speed running in town or traffic and you don't do a lot of high speed stuff, would it be worth dropping down a grade of plug, eg B8ES to B7ES??
Z900A4 Z1000A1 Z1100R
Re: spark plug query
It should not be fouling up. You might want to check your fueling and carb settings
Why do I persist in debating with idiots ? I really should know better
Re: spark plug query
dave cullen wrote:If you find your bike is fouling up a wee bit after prolonged low speed running in town or traffic and you don't do a lot of high speed stuff, would it be worth dropping down a grade of plug, eg B8ES to B7ES??
take Charlie's sound advice or u may well as drop down from semi synthetic to fry crisp and dry and from super 97 to 2 star
THE ORIGINAL TARMAC TERRORIST
Z1000S !! Z1R Z810 [ project ] FZR 1000 RU KTM SXF 250 / 08 R6 and my dog zak.???
Z1OC # 886 till 2026
Z1000S !! Z1R Z810 [ project ] FZR 1000 RU KTM SXF 250 / 08 R6 and my dog zak.???
Z1OC # 886 till 2026
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- Hardcore
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Re: spark plug query
yeh,
This is all a bit odd, as I have posted before re my ELR, I got a refurbed set of carbs from Wired George in the states, the bike is running brilliantly on the motorway, and A roads, and it had a good dyno run, but it just does not like getting stuck in traffic, and it's fouling up, I AM running it on super unleaded to try and stave off ethanol storage problems, maybe I should go back to regular unleaded for a bit?
I really don't want to have more workshop time, so I can put up with it, was just a thought re the plugs
Dave
This is all a bit odd, as I have posted before re my ELR, I got a refurbed set of carbs from Wired George in the states, the bike is running brilliantly on the motorway, and A roads, and it had a good dyno run, but it just does not like getting stuck in traffic, and it's fouling up, I AM running it on super unleaded to try and stave off ethanol storage problems, maybe I should go back to regular unleaded for a bit?
I really don't want to have more workshop time, so I can put up with it, was just a thought re the plugs
Dave
Z900A4 Z1000A1 Z1100R
Re: spark plug query
dave cullen wrote:yeh,
This is all a bit odd, as I have posted before re my ELR, I got a refurbed set of carbs from Wired George in the states, the bike is running brilliantly on the motorway, and A roads, and it had a good dyno run, but it just does not like getting stuck in traffic, and it's fouling up, I AM running it on super unleaded to try and stave off ethanol storage problems, maybe I should go back to regular unleaded for a bit?
I really don't want to have more workshop time, so I can put up with it, was just a thought re the plugs
Dave
dave what u running pods or standard air box ?
THE ORIGINAL TARMAC TERRORIST
Z1000S !! Z1R Z810 [ project ] FZR 1000 RU KTM SXF 250 / 08 R6 and my dog zak.???
Z1OC # 886 till 2026
Z1000S !! Z1R Z810 [ project ] FZR 1000 RU KTM SXF 250 / 08 R6 and my dog zak.???
Z1OC # 886 till 2026
Re: spark plug query
Over fueling on the low end.
Try weakening the mix slightly with the air screws.
Try weakening the mix slightly with the air screws.
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- Hardcore
- Posts: 1445
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- Hardcore
- Posts: 1445
- Joined: 3rd Jul 2002
- Location: edinburgh
Re: spark plug query
zed1015 wrote:Over fueling on the low end.
Try weakening the mix slightly with the air screws.
thanks, will do some tweaking in due course
Z900A4 Z1000A1 Z1100R
Re: spark plug query
dave cullen wrote:zed1015 wrote:Over fueling on the low end.
Try weakening the mix slightly with the air screws.
thanks, will do some tweaking in due course
rob's correct but one of the things ive done in the past is use a less restrictive filter k&n or better and drilled the air box then set up with a colour tune had it spot on ? but not on a elr box
THE ORIGINAL TARMAC TERRORIST
Z1000S !! Z1R Z810 [ project ] FZR 1000 RU KTM SXF 250 / 08 R6 and my dog zak.???
Z1OC # 886 till 2026
Z1000S !! Z1R Z810 [ project ] FZR 1000 RU KTM SXF 250 / 08 R6 and my dog zak.???
Z1OC # 886 till 2026
Re: spark plug query
dave cullen wrote:If you find your bike is fouling up a wee bit after prolonged low speed running in town or traffic and you don't do a lot of high speed stuff, would it be worth dropping down a grade of plug, eg B8ES to B7ES??
Yes!
This is the advice from NGK... read attached
- warren3200gt
- Hardcore
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Re: spark plug query
7's are hotter than 8's. They run better at lower speeds. KHI changed from 8 to 7 after the first year on 650's.
PUM 488 June 2023
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, ZRX1100R.
76 Z900A4, 77 Z650B1, 77 KZ650B1, 77 Z1000A1, 82 Z1000J2, ZRX1100R.
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- Hardcore
- Posts: 1445
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Re: spark plug query
I think i am going to try dropping the plugs to B7's, i got a dyno print out for new carbs and it was great i am told. When i was on run friday, it ran great but previously i got stuck in a big jam and it fouled up. Will report back thanks guys
Z900A4 Z1000A1 Z1100R
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- Custard Cream
- Posts: 910
- Joined: 31st Mar 2014
- Location: Runcorn
Re: spark plug query
Possibly try a set of Brisk plugs, though nowt wrong with dropping to B7s, as per the workshop manual
Re: spark plug query
Sounds like it's running too advanced ignition... i.e retard not functioning etc.
Kawasaki GPz750T, Kawasaki ZRX1100R, Kawasaki GPZ1000RX, H**** VF1000RG Rothmans, H**** VF500F2F, H**** CB1100RD, Suzuki GSX1100EFE, H**** XL125K2
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