View Full Version : nc30 carbs
Lately i have been having trouble starting my nc, i think this might be due to fuel starvation.With the choke out, she idles fine but
upon closing the choke she almost seems to get starved and there is no immediate response when i blip the throttle but when i up the idle speed to +/- 2000rpm things seem better.
What i am thinking of doing now is to remove the carbs, clean them and have them ballanced.
my question now is; is there anything special about the carbs that i need to know? I have a haynes manual but it is pretty vague.
if there are any step-by-step carb maintenance pics available please forward them
Any help will be greatly appreciated!!!!
All i want to do is ride!!!! :h
Hmmmm - sounds like one of a couple of things - either your needles (in the carbs) are gummed up, there's a problem with your floats/heights or you really do need to balance the whole lot. It's very difficult to tell if there's something wrong internally (and with which one) without opening them up.
As far as the balancing side of things goes, if you want to have a go yourself, you might wanna have a look at this - http://www.vfr750.co.uk/carbtune/carbtune.htm
you could otherwise be running a few tight valves, when was the last time you did a valve clearance check?
..in fact, as i think about it more - i doubt it's anything to do with the carbs at all.
not a fun job getting at that rear rocker cover but needs to be done about every 24k km's or sooner if you run her hard.
All i want to do is ride!!!! :h
To ride, first you have to fettle.
Remember folks, the last of the NC30s were made in 1996 I think, so virtually every one of them is at least ten to twelve years old, most over fifteen now.
If you young'uns think that you can buy them cheap and just ride around without putting much effort in, forget it. All older bikes need attention, it's just that the NC is such a jewell, that it lasts five or six years longer than most before this happens. Virually all other fifteen year old bikes are scrap now, the NC, just needs a bit of TLC and she's like new again.
As most are second hand with dubious service history, perhaps Mr "All I wanna do is ride" needs a reality check. If your NC has a dodgy can on, non standard or old air filter or no history, or indeed if you've had it a couple of years without a major service, you really need to do the job properly.
If you change your plugs, put a new standard air filter in, change the oil for Castrol R4 and put a new oil filter in, get the carbs off and stripped and cleaned up and reset to standard with perhaps 2 up on standard jetting for a crace can and no more and get your valve clearnaces done at the same time, then change the coolant, brake fluids and lube and adjust your cables, finally cleaning properly and lube/adjust your chain, then you'll have a bike that will stand by you and be as reliable as a Honda should be.
It can all be done in a day, without any more tools than what is in the tool kit. David Silver can supply all the bits you need at reasonable prices too.
Pamper your bike, you know it makes sense.
Remember folks, the last of the NC30s were made in 1996 I think,
NC30 'till '93 - then the RVF 'till '96
and spot on! couldn't agree more!!
What he said :bow: :bow: but my bike is a boy :D
I did say I wasn't sure, only that NC35s were all made in either 1994 (RR) or 1996 (RT).
Best tip I discovered was to undo the left side upper radiator mounting to pull it forward to let you get to the plugs without scraping your knuckles and damaging the rad fins.
TLC can be so satisfying , especially when it fires up first time afterwards, providing you get the vacuum tap on right :rolleyes:
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