List of All the Vacuum Lines

Question

This might be annoying but could someone give me a list of all the vacuum lines on the nc30 please as I have a leak in one so I need to check then all. All the carb ones should be fine as I got new carbs and pipes. So I just need to know any other vacuum line on the bike.

Brow 7 years 22 Answers 2156 views 0

Answers ( 22 )

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    There’s only one vacuum pipe and that goes to the fuel tap.?

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    OK cool that will be the one then just got told by the garage to check them all and thought it’s easier to ask on here than look through my Haynes manual

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    It goes from the inlet tract of the rear right cylinder (when sat on bike) to the tap. Do you have a running issue?

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    It’s when I come up to lights and it’s idling it will sit at 3000rpm and then very slowly drop down to 1500rpm

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    My garage said it will more than likely be an air leak on a hose

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    As Reg said below. Also make sure all the blanking screws are present in the inlets.

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    Yep I will do that too hopefully it’s as easy and a split in the hose

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    If you have a vacume leak check the carb mounting rubbers for cracks

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      They are all new and should be fine I will check them again anyway but they should be good

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      You didn’t buy the cheap Chinese ones did you they can be problematic

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      If you didn’t do it yourself, don’t assume. Lol

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      Nope bought genuine ones from David silver spares

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      Spray a bit of WD40 around the carb to head rubbers, if the revs rise they’re not seated right

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      And I replaced them myself around 8months ago cause the old ones were solid and split

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      Should be fine then .check diaphrams again for cracks

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      Yeah they are all new too got a refurbed set of carbs from Graeme France

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      Check the cables run smooth as well.

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      Just make sure they are pushed alway into mounts when fitting them they can trick u sometimes. Like Sam Billing says wd40 test can work a treat

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      The carbs to the mounts that is lol

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      Yep cheers I will give it all a go tomorrow if it still doesn’t work you will see me asking for advice tomorrow too

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      I always put bit ov wd40 on mount rubbers helps carbs to push home

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    Also does anyone happen to know the size of the vacuum line so I can just replace it

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