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

Mmm... are you telling me they changed the vacuum modulator on the
transmission and it still sucked ATF through the vacuum line? No freaking
way. This is the classic vacuum modulator problem and once changed with a
new one, it should not lose any more fluid to vacuum system.

Thanks Tiger
Well I am telling you that, they have it back at garage and theyare
saying perhaps faulty part, say they put a whole new box that houses
valve and did not just change valve, if it is not a faulty unit is there
any other way that fluid can get across to engine
Cheers Martin

There is zero other way for automatic transmission fluid to get into the
engine intake manifold. The vacuum modulator valve is the only way ATF fluid
could get to the engine when defective.

Thanks Tiger , sorted prob was a dective part fitted, so all is well

Martin