Now here's one for you chaps.
What with all the problems with my relatively newly acquired NTX (see NTX top end woes) I've not really had the chance to give the bike a good thrashing until recently. On doing so I noticed that it just won't pull past 6,800 rpm. Almost as if it had a rev limiter.
Obviously the first thing I did was pop on this forum to find a similar thread of a chap with exactly the same problem. But as is so often the case no conclusion. Having experienced an XJR1300 many years ago with the same symptoms I assumed it was air intake related so tools out to have a nose for anything unusual. Air filter out and all looked well but, after stuffing my hand down the air box I could feel that one of the rubber boots/tubes that go from the air box to the throttle bodies was twisted against the other tube to the extent I was surprised any air was getting to the right hand cylinder at all.
So air box out for a good nose. The problem could be alleviated by rotating the hose in the air box to change the angle thereby making both inlets free of each other but on replacing the whole assembly I soon realised that the hose no longer aligned with the throttle body. If that all makes sense :blink:
After an hour of twisting and stretching without success. It dawned on me. And a quick look on the parts diagram confirmed it.There should be a left and right hose with different part numbers and my bike from the factory has been fitted with two left hand hoses so it's been wrong since day one.
Correct part ordered and fitted and it now sails up to the the real rev limiter with vigour. Just need to get the throttle bodies re balanced now..... F**king Italians eh :evil: :evil:
What with all the problems with my relatively newly acquired NTX (see NTX top end woes) I've not really had the chance to give the bike a good thrashing until recently. On doing so I noticed that it just won't pull past 6,800 rpm. Almost as if it had a rev limiter.
Obviously the first thing I did was pop on this forum to find a similar thread of a chap with exactly the same problem. But as is so often the case no conclusion. Having experienced an XJR1300 many years ago with the same symptoms I assumed it was air intake related so tools out to have a nose for anything unusual. Air filter out and all looked well but, after stuffing my hand down the air box I could feel that one of the rubber boots/tubes that go from the air box to the throttle bodies was twisted against the other tube to the extent I was surprised any air was getting to the right hand cylinder at all.
So air box out for a good nose. The problem could be alleviated by rotating the hose in the air box to change the angle thereby making both inlets free of each other but on replacing the whole assembly I soon realised that the hose no longer aligned with the throttle body. If that all makes sense :blink:
After an hour of twisting and stretching without success. It dawned on me. And a quick look on the parts diagram confirmed it.There should be a left and right hose with different part numbers and my bike from the factory has been fitted with two left hand hoses so it's been wrong since day one.
Correct part ordered and fitted and it now sails up to the the real rev limiter with vigour. Just need to get the throttle bodies re balanced now..... F**king Italians eh :evil: :evil: