engine noise...

[samuria]

strange noise from engine when under load.... sounds
like a rattle??? but if i lift off throttle slightly it goes?
when its running at home i can give it full rev's
without a noise at all ?????
your thoughts please

[beero]

Is it a light tinkling rattle? If so that could be pinking/pre-ignition. Retard the ignition to see if it goes.

[hanvyj]

Check the engine steady (to the corner of the battery shelf) is in reasonable condition

[bmcecosse]

I'm sure you have been told before about the 'pinking' - as above - retard it urgently! It is very harmful to the pistons.....

[samuria]

I'm sure you have been told before about the 'pinking' - as above - retard it urgently! It is very harmful to the pistons.....

yes roy... now sorted. had to give dizzy a little twist....
no more noise

[bmcecosse]

Good -you want it 'not quite' pinking for best performance.