HELP!! 89 nc23

[corpie]

hi there,

i bought an 89 nc23 in august bike rode like a dream yesterday it just died while riding long push home... i was told it might be the battery so got a new one and checked regulator/rectifier and volts rose to 13.7 when revving

heres a list of new parts bought in july that i got from the guy i bought it off

air filter
new carbs for all cylinders
4 new spark plugs
oil filter and oil change
and a new gasket head cover
follow by a passed MOT

it starts like once every 3 hours and idles fine but then dies when pulling away

im super stumped driving me nuts

[willpisme]

you checked to see if the fuel pump is all working correctly? You can short out the relay and should hear it buzz until the fuel pressure is up!

[trickyd400]

Sounds fuel related, If the pump is working OK, make sure the tank is venting OK. When it stops open the fuel cap and listen for a sudden inrush or air?
13.7v sounds low? Does the voltage increase from not running to running? and It should stay at ~14v no matter how high the revs are.

[dunkenb]

Are all four exhausts heating up?