Almera low rev misfire

[Algolfcrazy]

I own a 2001 Almera 1500 and it is suffering with a low rev misfire.I have fitted new plugs,cleaned all electrical connectors to injectors and air flow meter.I have cleaned the throttle body and air flow meter,the air filter is virtually new.Can anyone help please.

[Nissan Owners Club]

Have you tried changing the leads too?

[Algolfcrazy]

Not got leads.Have tried coil packs,crank sensor and cam sensor

[Nissan Owners Club]

Have you tried plugging in a code reader to see if there are any error codes present on the ECU?

[Algolfcrazy]

Yes it came up with a p0300 code,which was a random misfire.It did come up with a crank sensor,but that has been changed.I am wondering if I need to change the air flow meter because I have read that this can cause the same problem.Any advice is welcome.

[Algolfcrazy]

Low rev misfire has been cured.I had the timing chain replaced and the car runs like a dream.Chain had stretched about a link and a half.

[Nissan Owners Club]

Good news!  :)