I have a 2006 Ford xr6 turbo with 105000kms on it and its making a ticking sound.
The car has been making the sound for some time now.
Ticking is in rhythm with the revs and is most noticeable under load at lower rpm but is not noticeable around 2000rm. The ticking is more noticeable when engine is cold and becomes less noticeable after 20-30 minutes of driving.
The sound is not as noticeable during deceleration but can slightly be heard if you listen carefully enough and also when in neutral.
I have been to a number of mechanics and heard everything form big end bearing to just using the wrong oil. The most helpful said change the oil to a lighter weight and put lifter free through it. Done this and the sound is less noticeable but still there but just not as loud.
The car has been idling higher than normal around 950rmp since having the ticking issue but since putting the oil and lifter product in the revs are now dropping to around 700rpm to 800rpm when I disengage the clutch (more normal range rpm). When it does this I have noticed the engine drop rpm and rise again when cruising on the highway but not very often (this only just started happening also along with the idle drops).
I think it’s the hydraulic lifters but I honestly know very little about engines and have never heard lifters go bad on a car before.
What is causing this noise?
Sound its making shot on my phone.
http://youtu.be/_4MwWCLEYiM?list=UU5sGKJ3XcLf13J7r_XQ7_Qg
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