Trade it for a tuber
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| Uly on 1 cylinder https://ukbeg.com/forum/viewtopic.php?f=8&t=2959 |
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| Author: | Blink [ 11 Oct 2009 18:04 ] |
| Post subject: | Uly on 1 cylinder |
Fine on the way out , on return journey bike started to run rough, wont idle { nothing new} running on one cylinder until you get to 3k then picks up like nothings wrong. Took it out on the motorway 70 + for 10 miles, pull over for an hour , start it up and idles rough then stalls. Start it up...one cylinder again for 1.5 miles on A road full throttle in 2nd 40 mph max, throttle off then 2nd pot picks up? Pulled out rear plug , oh wot fun, plug looks like its running lean fan is on nearly all the time. Any ideas ? |
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| Author: | Maz [ 11 Oct 2009 18:11 ] |
| Post subject: | Re: Uly on 1 cylinder |
Trade it for a tuber
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| Author: | Blink [ 11 Oct 2009 18:18 ] |
| Post subject: | Re: Uly on 1 cylinder |
And in the meantime? 
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| Author: | Adam [ 11 Oct 2009 18:24 ] |
| Post subject: | Re: Uly on 1 cylinder |
Blink, pulling a plug and looking at it will tell you very little about the mixture. To do a 'plug chop' requires a very specific procedure and modern fuels don't give clues like the old leaded stuff did. Even if you take a trip to your nearest airfield and fill with leaded petrol, modern FI and Cats really don't like the stuff. You'll need to spend time on a Dyno to sort fuelling. |
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| Author: | pash [ 11 Oct 2009 18:28 ] |
| Post subject: | Re: Uly on 1 cylinder |
HT lead worn through? Do a search. Common issue... Rear cylinder should never run lean as the lambda sensor controls closed loop from there. Any fault codes stored (check the how to section)? |
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| Author: | Blink [ 11 Oct 2009 18:32 ] |
| Post subject: | Re: Uly on 1 cylinder |
Thanks Adam, i must be getting old  , teknolagy is a  .Maybe i should just get the bus  Pash lead looked OK, lots of oil from airbox so took HT lead out so i could mop up , |
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| Author: | Davidxt [ 11 Oct 2009 20:31 ] |
| Post subject: | Re: Uly on 1 cylinder |
Lots of oil in airbox?? Check your oil level. |
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| Author: | Maz [ 11 Oct 2009 22:37 ] |
| Post subject: | Re: Uly on 1 cylinder |
Please explain how an excessive oil level in a dry sumped engine would result in the breathers dumping into the airbox ? 
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| Author: | Blink [ 12 Oct 2009 20:26 ] |
| Post subject: | Re: Uly on 1 cylinder |
No no no .......lets work out why my piece of shit Uly is fucking rubbish, sorry i mean firing on one cylinder. |
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| Author: | Maz [ 12 Oct 2009 21:38 ] |
| Post subject: | Re: Uly on 1 cylinder |
Could be one of many known issues which are all easy enough to diagnose if you know what ya doing and have the right equipment. I'll kick off with a faulty ign. coil ? |
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| Author: | THE FLYING DUCHMAN [ 12 Oct 2009 21:43 ] |
| Post subject: | Re: Uly on 1 cylinder |
What year bike Bink and how many miles done. Any mods on it. |
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| Author: | Blink [ 13 Oct 2009 09:43 ] |
| Post subject: | Re: Uly on 1 cylinder |
06 bike 4700 miles no mods, |
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| Author: | LazyDonkey [ 13 Oct 2009 14:39 ] |
| Post subject: | Re: Uly on 1 cylinder |
Checked the earth lead under the seat ? 
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| Author: | Blink [ 13 Oct 2009 19:20 ] |
| Post subject: | Re: Uly on 1 cylinder |
LazyDonkey wrote: Checked the earth lead under the seat ? Done that today, no difference. Ordered some plugs and leads will try these first then replace the coil if no result. Shit loads of oil in the airbox again...only cleaned it out 40 miles ago? |
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| Author: | THE FLYING DUCHMAN [ 13 Oct 2009 23:05 ] |
| Post subject: | Re: Uly on 1 cylinder |
If you have lots of oil in the airbox then it is going to go into the engine with the burn cycle and could foul the plugs. You should have none of note. It sounds like you will need to seek advice from someone like Maz on this issue. |
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