Engine Will Not Crank - Crankshaft Will Not Rotate
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Engine Will Not Crank - Crankshaft Will Not Rotate
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Cause
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Correction
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Seized accessory drive system component
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1.
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Remove accessory drive belts.
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2.
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Rotate crankshaft by hand at the balancer or flywheel location.
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Hydraulically locked cylinder
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Coolant/antifreeze in cylinder
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1.
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Remove spark plugs and check for fluid.
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2.
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Inspect for broken head gasket.
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3.
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Inspect for cracked engine block or cylinder head.
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4.
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Inspect for a sticking fuel injector.
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5.
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Inspect for cracked cylinder wall.
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Seized automatic transmission torque converter
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1.
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Remove the torque converter bolts.
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2.
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Rotate crankshaft by hand at the balancer or flywheel location.
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Seized manual transmission
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2.
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Rotate crankshaft by hand at the balancer or flywheel location.
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Broken timing chain and/or gears
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Inspect timing chain and gears.
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Seized balance shaft
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Material in cylinder
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Inspect cylinder for damaged components and/or foreign materials.
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Inspect for fallen cylinder wall.
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Repair or replace as required.
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Seized crankshaft or connecting rod bearings
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Inspect crankshaft and connecting rod bearings.
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Inspect for fallen cylinder wall.
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Bent or broken connecting rod
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Inspect connecting rods.
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Broken crankshaft
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