Be sure you are using factory specification parts for anything spark related - plugs, wires, cap, rotor!
Then you need to do some TESTING using instruments to see what is working properly and what is not. Guessing and replacing parts will cost a fortune, not fix the problem, and you can introduce new problems if an incorrect part is installed.
-Test fuel pressure, fuel volume, and fuel internal leak test.
-Test vacuum.
-Test compression of each cylinder.
-Check electrical of spark coil and wires with multimeter.
|