Alfa 159ti 2.4 ticking /tapping noise ?
Hi all ,I have had my alfa 159 ti 2.4 (210 version) for about 8 months it drives lovely it has had this issue since I got the car but I want to get to the bottom of what this could be .
When I start from cold it's fine and no noise at all.
When the engine gets to full running temp you can hear a definite tap or ticking kind of noise (very irritating !) when I rise the revs I can faze the noise out it will produce the noise on idle but will fade out for a bit but then come back .
I'm just wondering if anyone has had this issue any help would be great fully appreciated
I have tried injector cleaners ect the car is running on 5w 40 castrol edge oil
I was wondering if possibly an oil additive may help as to thicken the oil a little as there's no noise on cold idle then when it's hot the oil is thinner and it produces the noise ? I may be totally wrong here but just kinda makes sense