Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
for the noise to only come in under load then its most likely to be an exhaust leak as you've already tried to fix
as a tappet noise will be there all the time , especially when cold
the best way to do this is to start the engine from cold and feel around each joint with your bare hands - feeling for exhaust gas blowing over your fingers - you'll have about 30 seconds before it all gets too hot.
also check all the spark plugs are in tight as if loose the escaping gas can also make this noise
do you still need help?
Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! Thank you