RVF running rough as a C word.

[Reevo8]

Right, RVF was restricted a few months back, would guess I have done 2000 miles since. I muchly want to derestrict it, but couldnt take the carbs of a while back when I tried.

Now after it running sweetly for a few months, with a characteristic backfire popping on the over run, it has began to make a stupid sounding noise and stopped pulling above 80mph in 6th. And roughly 8k in every gear up from 3rd.

This just suddenly came along today.

The noise isnt anything but a drone, like if I was to have the fuel tap ON rather than RESERVE when it needed changing to RESERVE. Pisses me off no end, nout but trouble and bad luck this bike!
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05 ZX10R, (**05 WKR)

[EuropeanNC30R...]

Fuel tap diaphragm is a known weak spot. However tends to make itself known when the fuel level in the tank is getting near the reserve level.

Does it happen with a full tank?

[craigs23]

It might not be connected, but I'd check the rectifier on the bike, just to rule it out. I have heard that when it is on the blink, one of the symptons is a miss-fire at speed?

Might be barking up the wrong tree, but I'd check it just to rule it out.

[Reevo8]

Filled up with fuel today, still happened. Now the roughness starts at 40 in 3rd.

it revs throught the rev range sweetly in the first 2 gears, and when in neutral runs past to around 14~15krpm.

When I was on my way home the other day the lights turned themselves off while flicking between low and high beam. And the starter switch takes a while to try and turn the bike over. Sound like the reg/rect to you? I realise that these are a weak point on Honda 4's!
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05 ZX10R, (**05 WKR)

[craigs23]

Quite possibly, another sign is them loosing charge due to messing up the battery.

Try putting a voltmeter across the battery terminals. Rev up to 5-6000 in neutral with the lights on. If the voltage exceeds 14.5/15 volts, the rectifier's frying your battery.

The standard Honda item is expensive and there's no telling how long it'll be before a new one is needed again (hopefully years). I've heard on 400greybike of members using rectifiers from other bikes, but not sure of the mods if this is the case.

[Rob W]