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About rspatola88

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  1. Hi, new to Mack and need help I have a E7 400 Mack with a jaccob Brake set up, here's the story the truck had a head gasket problem that was building coolant pressure that we were adding coolant hopping to get a few more weeks out if it till we had time to get the truck in the shop, then we noticed a lack of power and noticed a misfire it seemed to be cylinder 2 and 3 we checked this by cracking the fuel lines loose one at a time, when removing the valve cover we found cylinder 3 exhaust yoke broken, from there we, Replaced both heads, gaskets , all 6 injectors , and injector lines
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