Engine Mechanical problem
1993 BMW 318 4 cyl Two Wheel Drive Manual 120k miles

my e36 318is coupe has no compression,car is at local garage waiting to have cylinder head removed.what is the worst case senario for car having no compression?also,i was wondering how many labour hours would a garage use to do this job as i have done headwork myself?

Those readings are taken by just a compression gauge? If it was me I'll reconfirm it with a cylinder leakage test.

Compression gauge readings: . Low compression in all cylinders would tell you the rings and cylinders are worn and the engine needs to be overhauled.

Cylinder leakage tester readings: A cylinder that has poor compression but minimal leakage usually has a valvetrain problem such as a worn cam lobe, broken valve spring, collapsed lifter, bent push rod, etc.

If all the cylinders have low compression but show minimal leakage, the most likely cause is incorrect valve timing. The timing belt or chain may be off a notch or two.

If compression is good and leakage is minimal, but a cylinder is misfiring or shows up weak in a power balance test, it indicates a fuel delivery (bad injector) or ignition problem (fouled spark plug or bad plug wire).

Labor hours depends on what's really wrong-

THANKS FOR SPEEDY REPLY ; )