My Mazda 323 F is driving me mad and I might have to scrap it. I have taken the car to the mechanics and they have changed spark plugs, leads and coil packs. All on separate occasions and all costing a few quid. When coil packs were changed the car didn't lose power for long period. But now it's doing it again.
When they plug it into a computer the readout either says it's fine or it can't read it.
For a while (2 years) the lights for the airbags have been on and that doesn't show up on computer reading.