Assuming you're talking about the TDC (dohc) motor. Unless you are Very familier with this engine I would'nt advise you to try setting it on your own. The 3.4L dohc or TDC engine requires very precise cam timming. There is only a .010 inch valve clearance between the valves and piston. In most cases, when the timing belt breaks on these engines the piston strikes the valves. These engines have sodium filled valves and are easily damaged. You should consider having a compression test done before even attempting to install a new timing belt. Which also should be installed by a qualified technition. The timing marks are "painted" on @ the factory and probably are no loner visible.
no the valvesn will not be damaged this is not a intefearance motor
It has a Timing Chain.
That requires an engine scanner to set the timing.
The 4.3 liter V6 engine in a 1997 Chevy Blazer has a timing CHAIN
The 3.0 liter V6 engine in a 2010 Chevy Equinox has a timing CHAIN
how much play should a 4.3 Chevy engine timing chain have?
The 3.0 liter V6 engine in a 2010 Chevy Equinox has a timing CHAIN
It requires an engine scanner to set the timing on that year engine.
in the engine block
THE TIMING IS COMPUTER CONTROLLED. It requires an engine scanner to set the timing on that engine.
The 1.6 liter 4 cylinder , has a timing belt , and IS an interference engine The 2.0 liter 4 cylinder , has a timing chain , and I don't know if it is or isn't an interference engine
The 1993 Chevy Lumina 3.1 liter engine timing belt can be found on the front of the engine. You will need to remove the front engine cover in order to access the timing belt.