Nissan Primera P11 GT - timing chain noise

Could be a oiling problem ie not enough pressure to tension the chain properly.

Could be tensioner defective, is it the newer version with finer adjustment fitted now if not change it.

It's kinda tight(ish) but i assume not tight enough.

The oil pressure light needs only 0,2 bar (2,9 psi) pressure to turn off. So no, even if it turns off you could still have dangerously low oil pressure.The only way to be really sure is to manually measure it by temporarily replacing the pressure switch with a manual gauge. FSM states that minimal oil pressure when warm is 11psi (0,78kg/cm2, 0,75 bar) at idle and at 3200rpm it should be anywhere between 46-57 psi ( 3.2 - 4.0kg/cm2, 3.14 - 3.92bar). Never rely on the warning light if you have any suspicions about oil pressure. If it turns on, it is already too late, the damage is done.

The best and most accurate method of checking chain wear is to inspect the tensioner's piston. It should extract less than 10mm. If it is near 10mm or over that, then you must replace your chain ASAP. You need to measure the distance between the edge next to the pin and the tensioner housing.





On both of these images the chain is way too worn and should be replaced.