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Old 11-09-2016, 10:06 AM   #7 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
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potential crank pulley issue

Yes! I've read about that - somewhat scary.

The keyway on the end of the crankshaft can be destroyed if the crank pulley bolt (a) simply loosens over time; (b) or was re-torqued incorrectly after removal; (c) or the key was inserted backwards in the keyway on reassembly.

The result is the crank pulley develops a wobble that wrecks the crankshaft end = need new crank/engine.

I will be looking for evidence of this:



Resulting damage:



^ That should be a clean, straight keyway.

It's a fatal flaw in the 1.6L 1st gen engine with the "short nose" crankshaft pulley end.

There's also a "loctite fix" procedure that may work if the damage hasn't progressed too far.
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