You are not likely to be able to determine a cracked head from a compression test. It will simply tell you what the static compression is in each cylinder. Loss of compression could be from many things, not just a cracked head.
Originally Posted by robertobaggio20
Do the compression test before you do anything else. You may have a cracked cylinder head.
Current ride... '13 GTI Wolfsburg
BMW's from my past...
'92 535i/5 '89 325ix/5
'98 750iL '86 325(e)/5
'95 740iL '84 318i/5