Help gearbox is using loads of transmission fluid had vacum chamber valve changed. fluid not leaking out but would appear to be getting in engine and into pistons as smokes like hell,I am really stumbed as would appear garage as well am throwing car back at them as put new chamber vacum valve on has returned back no better so would appriciate some guidance so can point garage in the write direction befor have to take out a 2nd morgage to pay for there think its this oh no must be this approach.......
Many Thanks Martin