I am working on my sisters 2000 ford Windstar van it has a 3.8 engine and I have changed lots of parts ,there are no codes , compression is good , heads , intake , sensors ,spark plugs & wires , motor mounts have been done , but the engine still is shaking .
could the harmonic balancer be the problem if so what do I look for that could indicate it.
Could be that but the 3.8 is famous for head gaskets.
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