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No compression on all cylinders, assuming pistons are moving and valves are intact - would imply bad valve timing, most likely timing chain... Several other issues can cause low compression in misc cylinders but no compression across the board without a catastrophic event such as major overheat or fuel washing cylinders, blown crank, etc - but "no compression" again, first check would be timing chain.

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13y ago

What else can I help you with?