Slight miss at idle, slightly modulating RPM and a noticeable miss under hard accel

[Mudbug63]

I think I have a CPS and maybe a injector trying to die.

At idle the RPM's very +/-100 in a regular pattern, kind of a surge. Its slightly rough at idle as well and if I really put my foot in it a noticeable miss.

No odd color or smell to the exhaust or anything and its still getting 16MPG so I don't think it is a major engine problem.

It feels like someones pulled a plug wire on a gaser V8.

I am suspecting a injector not firing right for the miss and the CPS for the floating idle. Could CPS be the cause of all of it?...I guess it could be now that I think about it.

Thoughts?

[taylorking]

Could be your ICP sensor. Unplug the connector and see if there is any oil in there

[SCUFFY828]

get a scanner on it and run a cylinder contribution test and see what it says before goin any further

[Mudbug63]

Yep that's my next step...trying to track one down now....Ill shell out the cash for a AE unit if I can't find one local to borrow/rent/beg....