84 hot air cutting out.

[shaneo]

Do you have a fuel pressure gauge? if so what does it read?

Prasad

no i am going to pick one up today and then after work check all the simple things and gor from there...

 

[3point8]

Low revs only

If this problem gradually got worse over time I would suspect either timing chain or valve springs. In my case new valve springs fixed the problem.
Peter