hesitation's

[Ratty Pete]

Hello there, i'm finding when i put my foot down so the boost return valve is fully shut i am getting what i can only describe as hesitation's as the revs increase. Its not misfiring just not a steady flow of power... Has anyone experianced this before or have any ideas what it could be?
Thanks.

[hardchargin40]

Be something down the ignition side of things.  Could be spark breaking down, so possibly leads/plugs/dizzy cap.  Next to that, you've the coil, or hall sender.
A hesitation usually signifying that spark is breaking down on the lesser cylinders, i,e, not on cyl1.  Depends how harsh the hesitation is.


Usually it'll be leads.  Take your plugs out and check condition too.