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My BMW X5 won't stay running

Hello I have a 2003 BMW X5. I just got the engine replace a couple days ago. I went to pick it up but because the shop was done installing the motor but now I have to deal with the other problems I ...
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46 views

A most intriguing cold-start misfire mystery

I'm trying to help a friend out with a CEL on his 2009 Merc GLK 280. Hooked it up to an OBD2 reader and retrieved a single code: P0300 - 'Random/Multiple Cylinder Misfire Detected', via the 'OBD ...