Yup. If the compression is good, my guess is doing the heads is all that’s needed in the rebuild category.

My former neighbor, the outstanding welder, thinks the intake manifold gaskets might be aged out as well. I tried the old brake cleaner spray test, didn’t get any action from that.

Could will be the complete renewal of the TBI is called for as well.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K