erratic idle / cutting out

[adamm306]

been out in again on my lunch

first thing in the morning when the car is fresh and cold it doesnt seem to do it once the car warms up a little bit after 5 minutes it starts struggling to idle after you give it throttle

i've found if you pump the grenade whilst its running and give it some throttle it dosent seem to bog down after seems to be idling nicely.

there is no visable air bubbles in the fuel line although when you switch the motor off you see a few big ones (i dunno if this is normal)

is the grenade supposed to stay rock solid whilst the motor is running?

the occasional missfire on idle is followed by a puff of blue smoke so could be a duff injector

ive replaced the leak off pipes is it essential to bleed the injectors after? i didn't do this

thanks for trying to help me its really frustrating me at the moment