Toyota Yaris 2002 Air Sucking Noise

[Astra7]

I have Toyota yaris 2002
After replacing spark plug and clutch.I noticed a rattling on when the car is idle.The can move nicely when i trace there is an air sucking noise around the air filter box. The mechanic recommends ti use injection cleaner i did that but the problem is still exist. could you please help me to fix this problem based on your experience . Best Regards, Astrael

[Cyker]

Is the air filter loose maybe?

My D4D had a noticeable turbo noise when I first bought it that my old one didn't have.

When I later changed the air filter, found some moron had put the old one in upside down and forced the box closed; The filter is keyed so it only fits in one way, so there was a small gap where it didn't close properly, but that was enough to let out the turbo noise!

It's possible something may have been dislodged or not screwed back in properly when the spark plugs were done?

[Astra7]

the noise is the same after i remove the air filter also

[syncview]

that probably means that you have a vacuum leak - search online on how to check for vacuum leaks using propane - its the best method out there to check for leaks IMO.

[Astra7]

Finally the car idles nice guess what ....It was a misfire on the cylinder this is due to a fake spark plug.So i replaced it with NGK spark plug and the car idles nicely.

[Cyker]

Good job!

Thanks for letting us know!