This head uses stretch bolts. Although the bolts should be good for two uses, it may have been out of spec. Before removing the whole head, try removing the bolt in question. Measure it to stretch specifications. If it is out of spec, buy a new one and retorque.

I know it will not be the correct sequence for tightening head bolts, but it may be OK for only one. If the bolt still will not torque, then it is the threads in the block. You will be no worse than now.

If you take them all out, then you will probably have to drain fluids, take the head off, clean the surfaces again, use a new head gasket and all new bolts. You may only find out that it was the single bolt.

Just trying to save you a whole lot of work. I had the head off my M103 so I know what a PITA it is.

__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
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