my 1987 mazda rx7 runs but it runs rough like its struggling i changed the fuel filter. could it ne i have to small of a battery or could it but a bad alternator?
There are a few more inexpensive things you can try. Check air filter and clean throttle body add fuel injector cleaner to gas tank.
If after doing what I suggested does not work have the Throttle Position Sensor checked.
I'M BETTING YOUR PROBLEM/S ARE FAULTY ELECTRICS AND GROUNDS. I KNOW BECAUSE I'VE HAD THE SAME PROBLEMS. ONCE THEY WERE TAKEN CARE OF THE "BEAST" REAPPEARED
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