Hi all

My name is Dylan and I live in South Africa. I often browse this forum and am always amazed by all your bike knowledge! I purchased a mint NSR 150 SP two years ago and it has been really amazing. Fitted a full Tyga system 5 months ago and never looked back. Ordering the step kit this week. Thanks guys for keeping NSR's alive and well. People always want to buy my bike, but always get a big NO from me! I love my NSR. It beats my mate's 46 HP RGV 250, but he doesnt accept this! LOL!

Guys, I took my bike for a run today and the bike just died three times on the highway. I noticed that this doesnt happen while I'm doing town riding. It only happens when I'm going 170-180kmh. I have to wait two minutes after every time it dies, then the bike starts again.
There are no mods other than an exhaust and an NGK "R" spark plug. Top end was rebuilt 1000 miles ago, with OEM parts from Tyga.

What could the problem be?
ANY help would be greatly appreciated!

Thanks
Dylan
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There aren't any NSR 250's where I stay, but I love my NSR 150 SP all the same!

It sounds like it could be fuel starvation. You need to be careful, as you are running the risk of seizing, although with the oil injection you will have a bit of a safety net.

Check the float level is set correctly. I can't remember what it is off-hand, but I think there's a few on here with the info or access to English specs via Australian manuals. (It's probably similar to the NSR125 carb.)
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Andy.
NSR-WORLD.COM

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Thanks for the quick reply Andy

How would I go about checking my float level? The last top speed run I did on my bike, I didnt encounter this problem. I did not rejet my bike since I got the exhaust, as Tyga advised I should keep my jetting stock. Could this be a problem? The PV's are fine and the bike pulls cleanly to the red. I am still running the autolube system.

Thanks again!

Dylan

It is essentially taking the carb off the bike and taking the float bowl off and then setting the height from there. If you're asking how to set the float height, I would strongly recommend you take it to a mechanic to do.

If you're mechanically inclined though, search through the tuning section here and have a look at how to do it for the 250. Once you understand the concept, then look at how to do it for your bike.

One easy check you can do is to make sure you don't have any kinks or weird bends in your fuel hoses, as that may be a contributor.

Thanks nxrsr20

I will definitely check out if there are any kinks in my fuel hoses, as well as reading through the setting of a 250's carb. Is it reletively easy to set a float height? my Dad is mechanically inclined, but more so with boats. No-one here really knows my bike, even Honda, as my bike is a grey import. I get all my parts through Tyga. What could've caused my float level to change? is this a common problem?