Help! Any one know what this Tapping noise is Video included!!

[KRAYSLiCK]

Hi guys i finally got time to make a video of the tapping noise i currently have... listen closely @0:17 @0:30.. you can hear the distinct tapping noise. it gets louder as the engine reaches up to temp.. what is it?? ENGINE YD25.
[YT]https://www.youtube.com/watch?v=SGegXTRpX0c[/YT]

 

[ShortyNavros]

Got the original stock timing chain?

 

[Old.Tony]

It sounds less like a tapping and more like a whuffing to my ears. Like an exhaust leak. Like a cracked EGR tube, even.

 

[Oldie]

I'm not an expert but apart from being noisy inside the cab, I could hear a snapping noise.
Something like ya get with bad electrics and a bad join and it's sparking.
Just my opinion.

 

[KRAYSLiCK]

Got the original stock timing chain?

hey whats sup man thanks for hearing the noise tappping. um honnestly this week im gunna remove my front upper timming chain cover and have a look.

 

[KRAYSLiCK]

I'm not an expert but apart from being noisy inside the cab, I could hear a snapping noise.
Something like ya get with bad electrics and a bad join and it's sparking.
Just my opinion.

here is another video of the tapping. [YT]https://www.youtube.com/watch?v=VVUNEJYM99U[/YT]

 

[KRAYSLiCK]

today ive open up my timming chain cover and saw this!! the tensioner guide is hitting the timing cover.

also does the slider suppose to move likE this in the video?
[YT]https://www.youtube.com/watch?v=dJFrzcGn5c0[/YT]
the Pivot allen bolt is also messed up by the previous owner :/..
but its moving in and out alot!