nsr125 help
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ok son went out on the nsr the other night and said its not running right so I took it for a spin and its hard to pull away on it its bogging down quite a bit quite dangerous pulling out of junctions but once moving all seems good, also fork sill is leaking which aint much of a prob I changed them a couple of months ago must not of put it in right as the other side is good
any one got any ideas wot to look for with the bogging jets are correct -
Sounds like way too much air. Tell me does it sound quite deep when you rev it.
In neutral after its warm, when you blip the throttle does it respond instantly.
Like this numpty here
Says aww 99 octane fuel killed my bike. Uhmm no mate, you can clearly here the snorkel is not in the air box. Clear as day. I don't understand why people remove them lol
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I had a 'full power' NSR foxeye j22 j think it was. Although I never had any problems like yours, the powervalve would stop working all the time and would retard the engine. Sounds similar to what you're experiencing, I just ended up pinning the valve wide open and it never gave me an issue again.
I'm not saying this is your solution, but it would be something I would take a look at regarding the running issues. With regards to PSI and compression, definitely check everything is bolted down to correct torque settings. Double check everything, make sure the carb is installed tight, no air leaks, proper float movement and clear jets. I know it's all simple stuff but sometimes stuff gets overlooked and it's the simplest thing that's stopping the bike from working.
@Carlosrexx said:
I had a 'full power' NSR foxeye j22 j think it was. Although I never had any problems like yours, the powervalve would stop working all the time and would retard the engine. Sounds similar to what you're experiencing, I just ended up pinning the valve wide open and it never gave me an issue again.
I'm not saying this is your solution, but it would be something I would take a look at regarding the running issues. With regards to PSI and compression, definitely check everything is bolted down to correct torque settings. Double check everything, make sure the carb is installed tight, no air leaks, proper float movement and clear jets. I know it's all simple stuff but sometimes stuff gets overlooked and it's the simplest thing that's stopping the bike from working.
how would I pin open the power valve ? might try this
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@Carlosrexx said:
I had a 'full power' NSR foxeye j22 j think it was. Although I never had any problems like yours, the powervalve would stop working all the time and would retard the engine. Sounds similar to what you're experiencing, I just ended up pinning the valve wide open and it never gave me an issue again.
I'm not saying this is your solution, but it would be something I would take a look at regarding the running issues. With regards to PSI and compression, definitely check everything is bolted down to correct torque settings. Double check everything, make sure the carb is installed tight, no air leaks, proper float movement and clear jets. I know it's all simple stuff but sometimes stuff gets overlooked and it's the simplest thing that's stopping the bike from working.
how would I pin open the power valve ? might try this
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Sounds like way too much air. Tell me does it sound quite deep when you rev it.
In neutral after its warm, when you blip the throttle does it respond instantly.
Like this numpty here
Says aww 99 octane fuel killed my bike. Uhmm no mate, you can clearly here the snorkel is not in the air box. Clear as day. I don't understand why people remove them lol
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Make sure the snorkel is in there and that there are no sharp turns in the inlet Tracy. It's the bend into the air box that stalls air flow. Hence why snorkels are a must.
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ok had another play today got it running a little better screwed the choke cable right in which made it pull off better still a little lumpy at about 20 to 30 mph gona try a new air filter which might help , tried running with no filter just the box but that didn't help made it worse at least it can pull away now will have to try more once its run in , a few pics of the air box set up and the plug , does the plug look normal ?
http://i286.photobucket.com/albums/ll115/mad73_2008/IMG_1916_zpsyseldbba.jpg
http://i286.photobucket.com/albums/ll115/mad73_2008/IMG_1914_zpszf1bbe4c.jpg
http://i286.photobucket.com/albums/ll115/mad73_2008/IMG_1913_zpssf9qakfq.jpg
http://i286.photobucket.com/albums/ll115/mad73_2008/IMG_1911_zpspu4mopeh.jpg
http://i286.photobucket.com/albums/ll115/mad73_2008/IMG_1910_zpsl56toq0d.jpg
http://i286.photobucket.com/albums/ll115/mad73_2008/IMG_1908_zpsmahlhzx3.jpg -
https://www.youtube.com/watch?v=tOVzRCxz4sw
how it runs now -
Cool, snorkel is there. If taking The filtration out makes it worse, then it's getting too much air and not enough fuel. If you max out the idle screw movement then you will need to go up a jet size.
I have posted a carb tuning tutorial on this forum that will help sort it.
If it runs fine with wide open throttle, then you can leave the main jet well alone.
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