99 206 XS - Engine knock

bottom end knock Hayes says....Knocking or thumping noise ..Worn big end bearings.(regular heavy knocking, perhaps less under load.)Worn main bearings (rumbling and knocking, perhaps worsening under load) Piston slap,(most noticeable when cold)Ancillary component fault(coolant pump.alternator.etc...hope this helps in some way.chris addlestone surrey

thanks for the tip - car has only done 67k so i would not expect something major like a bottom end going so i hope is not that!! Would the water pump possibly make a noise like that? It has pas and air con too so i guess it could be any of those....

has the car been hamered?lots of motor way driving also the last person might of let the oil go down low, which dos not help.

If it?s diesel it could be an injector on it?s way out

Ke

"Chris" wrote

thanks its a 1.6 petrol

its now solved however and turned out to be a loose spark plug! I guess th blow-by was causing the sound that was exactly like a major bottom end woe!

mechanic could not diagnose it but in the end after lots of tinkering i figured it out.