Quote:
Originally Posted by M_Thrizzle
Quote:
Originally Posted by nachob
Don't think injectors cause significant mileage increase. The most common would be bad o2 sensor but that would trigger a code. They do get bad mileage unless you drive super conservative and the tank is small. Is your car stock?
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Yes, AFAIK it's stock. Will BMW just replace the injectors if I ask?
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Not just for asking but they will test them. You have to declare a problem first. If they find something "wrong" they will replace them. If they are making a lot of noise, you have a miss, bad running motor or engine light. Maybe fuel mileage but that's a tougher one. I think it's worth getting the car looked at for sure. Even for piece of mind.