UPDATE BOTTOM OF POST:
Hey folks,
Forgive me for my 1st posting being a request for help! But im starting to run our of ideas...
A few weeks ago one night, the bike ran out of gas, threw some more in it and it ran fine all the way home. Next morning, start it to ride to work and I thought I noticed the exhaust note didnt sound right. Didnt think much of it as the difference was pretty borderline.
Started the trip to work, bike felt a fraction down on power and slowly got worse and worse during the trip. Eventually coming up a hill the bike 'snapped' back to normal and all the power was back.
During the trip I noticed the exhaust note was definately different - sounded to me like it was running on 3 cylinders which i thought would explain power loss etc.
After work - Bike starts fine and begin riding home. First couple of hundred metres the bike seemed a fraction down on power but then came fine again. Pulling into my street, stopped at the intersection and the bike was having a hard time idling and wanted to die. Died at the bottom of the driveway and wouldnt start again.
## What I've Done ##
* Pulled off carbs and cleaned out jets etc. Looked pretty clean to begin with. I thought when it ran out of gas it may have sucked some crap through into the carbs? Started the bike again and took 4 - 5 sec's to 'catch' but then would keep dieing whenever i tried to adjust the choke so it would idle below 4k. Started it and let it idle at 4k and after 10 sec's the rev's slowly dropped and died again. Today it wont even start.
* Tried a known good battery off another bike to try for arguments sake. No win.
* Pulled the spark plugs and checked those. Were a little wet but figured that would be from trying unsuccessfuly to start it earlier. Colour appears to be fine to me - can throw up some pics later if needed.
* New unifilter air filter fitted when carbs were off. Plus cleaned out and sealed the tank too.
Sorry this all long winded but figured the more info the better. Has anyone out there got any ideas/things to check? I hanging out for another ride!!
Cheers
UPDATE:
Since the bikes been running again, the problem has been coming up again and seems to be progressivly getting worse each day. Went fine for about a week, no issues at all - no gradually getting worse/occuring more often.
Appears to be happining once the bikes up to/near operating temp. But I will occasionally notice it in the morning when starting it first time. Almost sounds like its running on 3 cylinders; exhaust note different. But once i give it a chance to warm up a bit it usually comes right before i ride off.
When it starts playing up when its warm/near warm it turns to a gutless shit. No 'snap' in the throttle, sluggish etc. When its like this, if i come to a stop and let it idle it will want to die. Then when i try to restart it it normally wont start again. If i leave it to cool for a while it will normally start again.
Flatmates and I are starting to think it could be a spark/electrical issue. Reason being fuel system appears to be fine, tanks clean/sealed, fuel taps mint, no blockages in line between tap and carbs. New airfilter fitted a few weeks back which should be fine. Hasnt got excess filter oil on it.
Another reason why i think it could be electrical is a couple times when its been in 'shit mode' and i have been crusing along, you can feel the bike momentarily 'snapping' back to normal and then turning to shit again. But its intermitent, like a loose connection or something.
Plugs were out last time and they appeared to be fine.
Has anyone got any ideas? If i think of anything else which might help i will add it later, Cheers!
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Originally Posted by renegade master
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