Today dealt with a zed with a very poor tick over and also very reluctant to rev above 2000rpm arrived in the workshop, all usual checks found nothing wrong so on to a compression test.
All three of the right hand bank cylinders had a zero reading!
After stripping the the front of the cam covers off all was revealed,
the right hand inlet camshaft was some 30 to 40 degrees out!
Now I have seen this before when an old belt has lost some teeth or the belt tensioner has failed but there was plenty of evidence that the belt had been changed and the tension was ok? after further checks when removed the belt was NOT a genuine Nissan part, in fact it had no markings at all,the belt looks in very good condition but the teeth shape is unlike the Nissan part and weight of the belt is much less... can only conclude the belt is of inferior quality and the teeth shape allowed the cam to jump, unbelivable concidering 13 teeth are engaged at any time on that cam sprocket?
Good news is a new Nissan belt,stat etc and the engine sound sweet again..... lucky, lucky
Today dealt with a zed with a very poor tick over and also very reluctant to rev above 2000rpm arrived in the workshop, all usual checks found nothing wrong so on to a compression test.
All three of the right hand bank cylinders had a zero reading!
After stripping the the front of the cam covers off all was revealed,
the right hand inlet camshaft was some 30 to 40 degrees out!
Now I have seen this before when an old belt has lost some teeth or the belt tensioner has failed but there was plenty of evidence that the belt had been changed and the tension was ok? after further checks when removed the belt was NOT a genuine Nissan part, in fact it had no markings at all,the belt looks in very good condition but the teeth shape is unlike the Nissan part and weight of the belt is much less... can only conclude the belt is of inferior quality and the teeth shape allowed the cam to jump, unbelivable concidering 13 teeth are engaged at any time on that cam sprocket?
Good news is a new Nissan belt,stat etc and the engine sound sweet again..... lucky, lucky
(Pic link below)
Jeff TT