Broke Valve Spring??

[T.E.Shuler]

I just bought a 1993 GS500E that was in storage for a couple years. After changing the fluids, cleaning the tank, taking the carbs apart and cleaning them, checking plugs and wires and charging the battery she fired right up, but with a loud banging sound coming from the left front valve area. I pulled the Valve cover and things appeared ok but I have a loud banging sound coming from some where in there.
The guy I bought it from said the timing chain had been replaced but the tensioner was loose and needed tightend and was making a noise. The sound doesn't sound to me like a timing chain rattling around, but more like a broke valve spring.

Any of you guys experienced something like this? I have not checked the cam timing, could that also make this type of noise if cam timing was out?
Any help is greatly appreciated. Other than this sound, everything else on the bike is pretty ok except for a few missing nuts and bolts and couple busted turn signals.

[The Buddha]

Broken valve yes, not valve spring. That I've never heard of.
BTW he replaced the cam chain, OK he's 1. Lying and you hope he is. 2. Cluelessly split the motor and got the cam chain out and screwed up somehting big as he put it back togther.
Cool.
Buddha.

[GeeP]

I suppose a broken valve spring is a possibility.  The GS might run on 1.5 cylinders, but it would certainly cause a racket.

Considering he replaced the cam chain, it is also possible that the timing could be a mile off.  Also within the realm of possibility is that he didn't get it back together properly and you have a rod knock, not a top end knock.

Pull the valve cover off and have a look.  It will be obvious. 

Don't run it until you figure out what the problem is. 

[Mdow]

you can't "adjust the chain tension" its an automatic tensioner.

[T.E.Shuler]

Thanks guys, I'll check out what you guys suggested this week.