Just a bit of advise as per usual please guys

[Big Dave 79]

Hi All,

Some of you have been kind enough to help me get a sick nc30 back to life.

Non-starter.

So far I've checked
Clean Fuel....check
Carbs...check (fuels getting in and plugs are getting wet)
Clean plugs....check
spark....check
kill switch...check
air filter off so theres plenty of air

Before I did all that the bike did start after I changed the battery and I left it tickover.....the moment I grabbed the throttle it died....and hasnt started since.

When I try and start the bike now it just turns and turns drinks the fuel and then after a while back fires

Im now thinking about the pulse generator???? but before I shell out the cash what should I be checking for (I have the service manual) so I know where it is but is there a tell tail sign that its f**ked

Could this be the cuse of all the blood sweat and tears?

I look forward to your input here.

Thanks for the help as usual

BD 79

Rhyfela

[CMSMJ1]

Plugs mate..

Flooded, killed them. RIP NGK!

That is my tuppence of advice Dave. Good luck!

[viper_biker]

Another tupence, vacuum hose to the tank.

[CMSMJ1]

threpence says stick the airfilter back on too...

[1990nc30]

I'll second that it is the vaccum hose to the tank. I had the same problem

[Big Dave 79]

Ok guys,

So i've just got a couple of questions.

The vacuum hose - top of the tank??(or is that just the breather) or vacuum tube of the fuel tap? because I dont have that.

On my bike there is one pipe from the fuel tap to the t-connection going to the carbs,

Some people mention this fuel tap but like I said I dont see it (where does it go?) One end on the tap and the other goes where????

cheers

BD 79

[CMSMJ1]

There are 3 outlets on the fuel tap -one large adn 2 small. The large is to carbs, the middle small is the vacuum, the outer does not have anything to do.

The vacuum is on no3 cylinder which is the rear on on the right hand side as you are saat on the bike.

I think it is not this as you note that there is fuel in the bike and if there was no fuel it would not have made the pop and got your plugs wet.

Does your tank leak fuel when you leave the tap turned on?

[Big Dave 79]

yeah I took the tank off and turned the tap to on the fuel comes out? (is that what you mean?)

[CMSMJ1]

yes - exactly. You have had "the HRC Tap mod" done to the tap. This is not normally a good thing but it eliminates the vacuum hose as being a problem...as you don't need one!

Just have to remember to turn the tap off or you might get fuel leaking into the cylnders and into the sump

So....I'll go 50 pence...for plugs still

Graeme france (france and Li asia trading) had some for sale for very cheap in the for sale section a couple of weeks ago.

[Big Dave 79]

Thanks Guys,

Just bought the Engine service kit from David Silver Spares, so its new air filter

New Plugs

And while im there ill check for Petrol in the oil (so its new filter and oil time 2)

Ill keep you posted on what happens

Thanks

BD 79

Rhyfela