Originally Posted by grunter
bleed valve for dump valve is a age old naughty trick to allow u to run a diagphram dump valve with out the engine stallin bin it mate and getta double piston one.......... the bleed valve bleeds off the vaccum to the dump valve there for creating an air leak makin ur engine run rich..... been there done that years ago lol
That was exactly what i had in mind, very crude
Get that bleed valve off if its a bailey twin piston then it shouldn't be there, and it will contribute to some very poor idling problems among others.