1986 GMC S15 no compression in all cylinders

1986 GMC S15
265,482 MILES • 6 CYL • 4WD • AUTOMATIC
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SISSYPOO1
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nocompression in any cylinders after changing lifters and intake manifold gasket cant find any leaks did run before but made lots of noise from lifters so i changed then now no compression no pressure in crank case or cooling system what did i do
Mar 12, 2010 at 6:46 PM
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RASMATAZ
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Hi sissypoo1, Welcome to 2carpros and TY for the donation

id you mike the camshaft lobes before you replace the lifters and also adjust the valve lash?? if all okay-check the valve timing could be off.

Also I recommend you do a cylinder leakage test-if the readings indicates minimum leakage and shows all low compression -recheck your valve timing could a notch or two off-
Mar 12, 2010 at 7:09 PM