noisy tickover

[dave74]

hi peeps i just had my t5 classic engine split and after putting it back together it has a noisy tickover still goes fast no slouching but the sound is like a slight knocking any ideas ?? or am i better with a can of petrol and a match cheers

[joe]

What part of the engine does the noise come from,clutch,crank,barrel,flywheel or gearbox ?