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You need to be a little more descript . Is it still an air lock? ,is it fuel starvation?, is it a poor electrical connection?.......One thing is for sure Hari it WILL be something ridiculously simple, it alway's is.
Did you pull the carburetter off and clean it out also? If the bike was still running it has probably got a belly full of water. Great work on dumping and refilling the oil. But you need to check your carbs and your air filter. If the air filter is wet it will run for a little while then stop. Also check your spark plug and leads make sure they don't have water in them or haven't corroded.
So make sure you have good air, spark and fuel delivery.
It is most likely fouled spark plugs. You can take them out and sand blast them, or buy new ones.
I had a CBR 954, and noticed that the spark plugs fouled out pretty easily because it runs so rich at startup (and I would shut it down during the 'warm up' phase).
Here is some more information for you:
What are signs or symptoms that spark plugs in a motorcycle need to be changed?
There are several things that could hint at bad plugs.
- Hard starting. - Slight to severe hesitation when you give the bike some throttle. - Stalling, especially when you give the throttle a good twist - uneven idling (tends to zoom up, or down, or sputters) - After running the bike for a little bit, take out one of the plugs. If the end of the plug is wet, its not firing, and it could be oil fouling the plug - take a look at the color of the end of the plug -- if it is white, its running too hot, and it can cause misfires - look at the same area, and if it is covered in black soot, it can be poor gas mixture and dirt in your tank causing it to foul
Hope this helps.
If it will jump start before it cools, I would still suspect the battery. or even the starter motor.
An auto electrician should be able to load test the battery( the bike shop likely just put a meter on it and it read 12v) they could also check the current draw of the starter.
The engine still will be a little tight but this shouldnt stop it running unless something is wrong or seriously overheating.
it may even just get better when it runs in some more, this is probably what the shop is hoping.
if the clutch burned out it must have been slipping causing lots of heat inside were the starter is, all this extra heat wont do the starter any good at all, if its still under warrantee get it back as its clearly not right,, not at all like bmw?
The clutch in your bike is a wet clutch. There is a lot of hyrdostatic friction even when the clutch is released completely. I think a large factor is the type, age and condition of oil. Perhaps something as simple as an oil change would help.
What have you done if anything to check out this problem?
Several causes could be:
1. Not getting fuel do to clogged jet in the carbs for those cylinders.
2. Fould plugs in those cylinders.
3. Not getting spark to those cylinders/bad coil
4. no compression in cylinders that don't fire.
So run the bike and determine which cylinders are not firing for sure. use a squirtgun and hit the header with some water. running cylinders with smoke the water. non running will not.
Then remove and replace the plugs.(look at old ones, all oily=bad) See if they are wet and shiny but not black...Not shiny=no fuel. Tear carbs apart and clean.
Check to see if you have spark leave spark plugs unintsalled from motor but installed in spark plug boot. see if they spark when you start it.
Do a compression check. wet and dry. could be rings or valves.
If the bike was sitting for a while then probably clogged jets...This is where stabil comes in handy or else drain the bike at the end of the season.