My daughter owns a '91 miata 4 cly. throttle body and she brought it to me complaining that the car would not go! I checked it and noticed the following problems:
1. the clutch is slipping
2. the engine hesitates when starting from a dead stop(could be flooding) idles okay... and runs smooth at speed.
3. noticable harmonic at about 30mph plus; seems to be in left rear.
Do not have manual... where is fuel filter located