Question about 2003 Mazda Mazda6

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Lack of power when acclerating

Replace 2.3L motor with a used one 2.3 L when replaced needed to send head out to have valve job done on it. head returned and put it on linning all timing makes up and when started to motor has lack of power. when reasembled we used the parts from the used motor we got. the junk yard told us that there was no difference they were the same year and model car. 2004 mazda 6. i did find some different parts but changed them to the parts from car.

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Could be anyything, form a crank sensor to a map sensor to a maf sensor, is the check engine lite on?

Posted on Jul 24, 2009

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