ok i have a 95 GSR and i have a ticking sound coming from the motor. I thought it was a valve problem, but the ticking is only when i am on the gas and moving. It goes away when I shift gears, because it drops in rpm and i don't hear anything at idle. I thought it might be a fuel injector but I am not for sure.

 

maybe is a rod

 

rod,pinging,crank bearings.

Well could be almoust anything but those are the most common, also check the easy things like, belts and alternator.