power-steering leaks are common, mainly because people use power-steering fluid when the FSM calls for ATF fluid.
ask when parts have been changed, spark plugs, spark plug wires, distributor cap, distributor rotor, fluids ( engine oil, tranny fluid, and differential gear oil. )
listen to it run, should sound smooth, timing chain rattles are common, but you can use it to talk the owner down.
get underneath the car check the crossmembers make sure they are straight and dent free, check out the suspension arms make sure everything look straight.
look in the trunk and battery tray for rust..
check for torn power-steering boots..
see what the exhaust is outputting color, a lot of smoke? what does it smell like?
you should post a thread under your area, and see if any experienced 240 owner is willing to check out the car with you.
ask the owner questions just to see if he knows what he's talking about... in general
check the car out.. take pictures, and post them up here..
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