318 oil leak

eightydeuce said
I have an oil leak in my LA318. It is coming from behind the harmonic balancer and I'm assuming its the seal behind it? It's making a mess and leaving a small puddle of oil every it sits after driving. I bought the engine from some dude on Craigslist and other than this leak the engine has been fine. Is there any other spots back there that it could be leaking from? Any suggestions or tips on repairing this? I fairly new to this type of work and try to research as much as possible before I learn the hard way...although sometimes its unavoidable. Thanks

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A couple of things to pay attention to here.
Garrett’s last two sentences.
The only thing that centers the balancer in the seal is the balancer hub, so the timing cover needs to be loose as well as the oil pan.
It looks to me like someone might have tried to fix the leak already and failed because they didn’t loosen the oil pan.
(Maybe/maybe not)
Some can do this without loosening the pan, but it takes experience to pull it off without causing the same problem.
BTW the front crank seal IS the balancer seal.