knocking noise when exelerating in 1st+ 2nd
I have a 156 1.8 TS and it is making a strange noise, when you pull away in first and sometimes driving in second, up to about 25 mph there is a hollow knocking noise, It sounds like the exhaust is knocking but Ive had a good look at this and this does not appear to be touching anywhere when given a good shake.
I have tried taking off the belly pan/tray, its not this. I thought it may be the air box, as there was a broken mount on this , but I fixed this and did the V6 mod, but the sound is still there. I was thinking about doing a test by putting something arround the air box to see if I can rule this out.
When sat in the passenger seat with you head sideways it does appear to come from the front of the car.
does anyone have any ideas, or had a similar problem