hi all, problem with a td5 discovery. pump started squealing with air bubbles in the system, i immediately changed injector copper washers to no avail, i have now changed them 3 times in an attempt to stop this......
ran clear pipe on the return and when engine is cold there is no bubbles and the pump runs quietly until it reaches running temperature and the bubbles start rushing through and pump cavitates when restarted.....changed the pump aswell. in a desperate bid to fix it i fitted another engine,since i thought there was a crack somewhere in between rail gallery and cylinder. the problem still exists! no problem at all until engine temperature reaches half way on the gauge!
any help will be highly appreciated!
thanks
(all genuine parts fitted)
