how to setup timming

[winniepooh]

timming setup for vectra 2.0 auto

[stereay]

The lower pulley (crankshaft pulley ) should have a small notch in it that lines up with a small pointer on the timing casing. The camshaft/s pulleys at the top of the engine have holes in them, these should have tapped holes behind them, put 8mm bolts through the holes and screw them into the cylinder head.With the cam cover off, the lobes on the cam shaft should both be pointing up! The middle pulley (the drive for the distibutor) also has a hole through it, use a bolt to lock this also.Move the small pulley, the tensioner, (usually spring loaded) back as far as it will go and lock it off. The timing belt should have arrows on it to show the direction off rotation, fit so that it will rotate clockwise as you look at the pulleys from the side of the car.Make sure ALL the slack is at the tensioner side, release the tensioner and it auto matically tensions the belt. Lock it off. USE A SOCKET AND BREAKER BAR TO ROTATE THE ENGINE TWICE ( THE NOTCH HAS TO PASS THE POINTER TWICE!) IF THE ENGINE LOCKS UP, THE SETTING IS OBVIOUSLY WRONG. This means the piston is coming up to the valves and hitting them, check that the piston is definately at top dead centre, remove number 1 plug and re-align the pointer/notch use a PLASTIC probe to make sure the piston IS at the top, if it is check that both lobes are pointing up. Failing this, a Haynes manual is only �12.