Knocking sound on acceleration
Hi .... I bought my 156 2.0TS (2001) from an Alfa Specialist just over 3 months ago. It was advertised as having had a complete engine rebuild and needed to be run in after a split piston ring problem. The big ends, cambelt, variator and all gasgets were replaced. It has ran for 2500 miles without fault. The dealer advised me to have the oil changed after a few thousand miles due to engine rebuld which I have just had done. They used 5w30 fully synthetic.
The car started this morning fine but I thought someone was cutting their grass when I reasiled it was my engine! On accelerating it knocks loudly and goes quieter on lift off or at constant speed. On tickover it now sounds like its knocking. but if you slowly build up the revs it sounds fine. It is still as powerful as ever but obviously drove it very gently todayand haven't had it over 3000 revs since I got it.
I have booked it in to my local garage on Tuesday to find out whats happening but if anyone has any ideas to ease my worry I would be very grateful.
No suprises the 3 month warranty ran out 2 weeks ago !