engine noise

[thomas]

have my ZR 105 + 2 WEEKS AND FOUND THE ENGINE TO BE NOISY WHEN STARTED AND A BIT NOISY WHEN RUNNING IS THIS RIGHT 650 MILES SO FAR

[Dr Dave]

Nothing to worry about really, its normal operation

The engine will be noisier when cold due to piston slap; this disappears when the engine is warm - in about 2/3 miles.

Piston slap is nothing to worry about - ever heard a Cosworth engine idling when cold?

Then you'd understand what piston slap is!