Hello,

Let me introduce myself first. I love driving, yet know very little about cars, therefore seek your help. Greatly appreciated.

It seems, as of lately, my Mazda 3, 1.6. diesel engine is making some 'ticking' noise. Worries me alot.

I had hard time telling where is it precisely coming from, yet I'm almost certain it's the engine, for that when I slighly rev it 'ticking' proportionaly intesifies.

Here is the video of what it sounds like: www.youtube.com/watch?v=ODlcSw0xb74&feature=yo...e

1. Mileage: 120k
2. Cambelt changed 10k miles ago
3. Oil level: normal
4. There is a slight oil leak (shown at 0:06)

My driving is not erratic. I don't get engine to go lower than 1,5k revs and it hardly ever goes over 2,5k revs.

The last thing that was done is the throttle body. It was cleaned up by the reputable mechanics as idling was rather rough, otherwise I did notice slight misfire when driving about on cold engine. But it was not persistent.

Thanks for your replies.