I replaced the exhaust manifold gaskets today on my '90 300SE. Unfortunately, I now have an exhaust leak. I think it's the forward down pipe. I thought I had it matched up well before tightening it up.

I loosened it and tried again, still leaking. I tried using soapy water to see if I could find where it's leaking, no luck.

I did notice some wear on the manifold at #4 cylinder, I cleaned it up and it was very minor.

Any suggestions as to what to do?

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Mr. BILL

91 300E 120K
90 300SE 275K (sold)
92 BMW 525iM 120K
90 BMW 525iA 175K
85 300D 175K (sold)
84 300SD 245K (sold)