Exhaust Problem... maybe
I was hoping you folks could help me with a diagnosis issue.
I recently bought a 99 540i Station Wagon with 77K miles. The exhaust seems to be louder than it should when I accelerate. I had it put on a lift and the mechanic said that there was no exhaust leak at all. He suggested that I go to A BMW mechanic.
Here is the strange part of the problem. When it is raining an I go over a puddle the noise gets very loud. It is also directly proportionate to the size of the puddle. The bigger the puddle the louder the noise. The increase in noise only lasts a few minutes (I guess until the water evaporates. I am taking it in for service this week but I was hoping someone on this forum would have some insight.
99 540i Station Wagon 77,000 Mailes