Outer Limits 4x4 Board

hey guys, my 4.2 carbi gq is losing revs really quick and cutting out on me on idle, only in neutral tho (is manual) it only does this sometimes but then when i take it 4 a drive its fine again, its getting worse and worse and starting to do it every time i drive. when it cuts out and i try n drive it, it sometimes backfires and spits and splatters and runs like shit...

ive changed:
- coil
- rotor
- distributor cap
- plugs and leads r good
- carbi overhaul
- fuel filter
- intake manifold gasket
- points
- condensor (on distributor)

any suggestions?

possibly the crankcase blowby valve thingy

are you saying it only does it in nuetral or in any gear with clutch put in

it does it in neautral and only when the clutch is in when im in gear

could be as i mentioned above , bad earth somewhere , too much play in the dizzy shaft , vacume leak somewhere,

just some suggestions but will probly be something simple

that sucks simple things are so hard to find sometimes we really need this fixed or he cant come to faser. we said he could come we would just tow the nissan everwere

all good guys, was a blocked idler jet