compression test recently done by owner and looks fine on all cylinders, will take a look at the areas described when there today to look again!
Thats great to hear but the Rx7's dont have any cylinders!
Rotors maybe but not cylinders!
Says the new Mazda PISTON man!
GLC is 323, 5 door or 3 door?
Should be the E5 1.5 litre engine in both variants - well Oz versions anyhow. Motor wasn't too bad but you always seem to need to adjust the valves - can be noisy. Just make sure the rocker cover hasn't cracked as they can crack when tightened too much. The water pumps also seem to leak as well.
If you can road test, keep an ear out for front wheel bearing noise, they are a little prone to wear and are quite an expensive job over here to do.