Good news... the car was fixed 10 days back... the issue was a faulty ignitor and some wiring... now the car runs simply amazing pulls 425mmhg at 900rpms and runs strong.

Thanks for all your help.....

 

Sounds like you are just running on trailing plugs.

Check to see if you got spark on the leading coil. If not then that's your problem. I think you got a faulty wire somewhere.

It is after all a old car. Change your coilpack harnes. If it's not do a signal test between the wires from the plug to the coil harnes and the igniter. If all are ok there. Check it between the igniter and the ECU.

Somewhere on the line there the signal is not good. Also check 12v suply to coils. I have seen it not getting 12v at times. And this makes the car missfire.

But as you said if you advance the ignition 7 degrece it sounds better, it sounds like it does not run on the leading coils.

Easy fix tbh for someone that knows a rotary, or is good with car electronics.

JT

 

I would disable the fuel pump, pull each plug individually and check for spark while cranking the starter. Not excessively, just long enough to see if the plug is firing correctly. This will tell you alot about all of the above--plugs, wires, coils, ignitors. It should narrow u down to which plug or plugs are a problem and search back through the system from there.

Edit: Ah, didn't get to the second page. Glad it is fixed.