Hi i have a 1986 mazda rx7 that was a race car. Then the previous owner let it sit for 15 years. The car sounds like its about to start. But it just throws black clouds like you wouldnt believe. What steps should i take to get this 13b non turbo going? Eventually im putting an ls1 in it but id like to drive it around the block a few times.!!

those rotary engines were pretty trashy as they aged. So first do a compression test, and if it's really low, engine will need rebuilding . If it's good, either rebuild the carb or remove the injectors and pressure clean them if it's injected