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  1. Alfa 159, Brera & Spider
    Hey guys, i have a problem. after 4.rpm. car is not speeding in any gear. and after 4 rpm,(when speeding is stop, car is shaking a little bit to back and forth) what you think ?. last 2 week i have this problem.generally i am using 1/4 depo to fuel.thats why? sorry for my bad english