Hi,
I live in new-caledonia (small island near the australia), and my EVO 9 do the same noise. I have checked everything (timing belt, tensioner, water pump..) and after many hours, I have found that the 3 screw of the engine mount on the block were loosen. I have tighten them, and the noise desappear. One month later, the sound come back, the same screw were loosen, retighten them and it's ok. And today the sound come back, I think that i will put some loctite on these 3 screws, they are very inaccessible, and they are very small.

PS: this sound appear after i will put a little too much oil in the engine and after that I have changed my clutch (for an exedy twin discs) (Perhaps the vibrations of the clutch loose the engine mount screws...).

Sorry for my bad english.

Toni FERRARI

 

can you take a picture of what screws you are refering too?

 

This is the location of the screws. you need to unmount all the timing belt for access to these screws.

 

Had the same problem here.

 

I will tighten these screws for the third time this sunday. I will let you know if they were yet loosen.

 

Do you have an aftermarket clutch Ruff Ryda?

 

Nope. All stock. Why?

 

Because I think that after market clutch causes some vibrations, and theses vibrations could loosen some screws (It's a theorie). Or, there is another source of anormal vibrations on this engine.

 

I have checked the screws this week end and all the screws are ok, the belt is ok, everything is all right. I don't understand, if someone have a solution...
I have changed my oil for test. I put some Castrol 10W60. Before I had the Castrol 5W30.

 

same exact sound as origional poster. t-belt idler pully replaced- fixed it.

 

Thats exactly what the dealer changed and the noise went away.

 

Took my IX to the dealership to diagnose the tapping noise. According to the paperwork, the belt and Mivec gear ended up being replace under warranty.

 

To all of you guys that had this problem fixed under warranty what mods did you have done??I have the same noise which is getting worse,i want to take my car in but dont want to get rejected for mods.
Heres what i have done,do any of you see any reason that i would be turned away.
1.TBE
2.Jdm Map
3.Innovative Lc1
4.Beatrush Underpanel
5.Coilovers
6.Hks Turbo Timer wired into the ecu for rpm and speed
7.Prosport boost gauge
As you can see theres not much done but ive heard ppl's warranty getting rejected for less.

 

I had a TBE, EGT/Boost Defi, Cossie M2, Injen pipes/intake.

 

i had the prosport boost gauge and TBE. i switched back to the stock map too.