Hello I have a 2004 mazsa 6s 3.0l. Last year the motor blew and I replaced it with a new motor. The new motor has 40,000 miles on it. I have recently started to have an issue with the motor running rough at startup. It has been running rough at idle, hesitates when accelerating with black smoke pouring out of the exhaust. I have checked the cel and it has shown consistently - p0300 engine misfire and has shown p1487 egr valve malfunction code. It was tripped the bank 1 sensor 2 no reding code twice. I have cleaned the egr valve and replaced the 1, 2 and 3 spark plugs and coil packs. It seems to be running rich. The freeze frame data showed the command egr at 51% several times. Could this be a fuel pressure regulator malfuction? What should I check next? Thanks in advance.
have the same problem?
Friday, July 24th, 2015 AT 12:23 PM