Question about 1990 Mazda RX-7
Sporadicly sputters and backfires when started. It acts like it has just enough power to keep running. After running a few seconds it smooths out and runs fine. I have not noticed an pattern for this problem occurring.
I tried the following without resolving this problem:
1) added Sea Foam to a tank of gas,
2) replaced the Leading coil & ignitor
Could you suggest something to test and/or replace?
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Posted on Jan 02, 2017
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