I just finished putting the cylinder head on my 89 190E 2.6L. She starts alright, then settles to idle. Then I hear the most horrifying sound of my life: a clearly audible noise from the bottom end. I call my friends over to take a look, not knowing what the noise is. there is oil pressure, as idicated by the dash guage, and we took the valve cover off to double check. It only happens once the engine is started, and worsens up the rpm range. When cranking it doesn't make the sound. It's not valve or lifter tap. It's not the rod bearing sound. The head was originally removed because the car was running very poorly. A new camshaft and rocker arms were put in. Full head job was done by a machine shop. Everything was torqued to specifications. The engine runs good with the exception of the noise. It sounds like a disel now, is the best way I can describe the noise. I don't know how else to describe it. If anyone has insight to the cause of this, it would be much appreciated. Just when I thought I was done with this car, it has me back against the ropes.

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1989 190E 2.6L-My current tormentor