Loss of power, smoke, knocking noise, popping noise, backfiring through carb, or out tailpipe. Any, or, all of these.
if youre getting alot of white smoke from your tailpipe and if you hear a knocking noise coming from the top end of the motor could either be a rocker arm or a valve if it is knocking and the valve is bad the knocking will speed up as you accelerate valve are cheap and easy to replace anymore questions email me at utcbass_man@yahoo.com
You can tell a bad valve by doing a compression test.
Bad fuel?
your heater core is going bad
Bad spark plug or wire? Bad Valve or piston? (do a compression test)
bad alternator/voltage regualtor
Check the compression of the cylinders you will have a low reading in the one with a bad valve
seriosly come on GT500 will smoke the camaro so bad that Chevy won't be selling them any more.
What kind of valve? Exhaust valve? EGR valve? PCV valve?
it is probably a bad ignition module or computer
Most likely a bad sensor/relay
bad oil rings==head gasket== valve seals