dump valve fitting / boost problem

PureButeS12 · #1 27-03-2010, 19:42

i've just fitted a dump valve to my ca18et S12. the valve isnt dumping & my standard boost gauge is staying around zero. i have plumed the vacume hose to the blanked niple next to the clutch master cylinder as discussed on a previous threat

the forge dump valve was off a s14. is it not dumping or reading boost beacuse the spring is too hard for my puney 7psi or have i connected the vacume incorrectly?

any help would be a great help

irish s12 · #2 27-03-2010, 19:44

Have you got a picture of the way it's connected?

PureButeS12 · #3 27-03-2010, 19:49

Quote:

Originally Posted by irish s12

Have you got a picture of the way it's connected?

giz 5min & i will have

PureButeS12 · #4 27-03-2010, 20:02

Quote:

Originally Posted by PureButeS12

giz 5min & i will have

actually scratch that, my dad's F'd off with the camera GRRRRRR! i'll have to wait until tomorrow

PukkaSilvia · #5 27-03-2010, 22:04

is the car actually making boost?

PureButeS12 · #6 27-03-2010, 23:34

Quote:

Originally Posted by Pukka

is the car actually making boost?

i dont think so, its hard to tell with such low boost as standard? possibly not. i'm goin to have a good look over it in the morning... could a dodgy vacume prevent the turbo from working?

PureButeS12 · #7 28-03-2010, 13:29

the tansparant hose is my vacume, is this to the correct place?

PukkaSilvia · #8 28-03-2010, 14:49

yeah thats fine. Unplug it and just check its sucking at idle. there could be a block

PureButeS12 · #9 28-03-2010, 16:44

Quote:

Originally Posted by Pukka

yeah thats fine. Unplug it and just check its sucking at idle. there could be a block

i've just had all of the boost pipes off & found that the hose on the actuator was split, i've replaced it & reinstalled all the boost pipes but the boost gauge & dump valve are still not working???

does any1 know if the problem is because this dump valve is off an s14, is the spring too hard for 7psi to move?

PureButeS12 · #10 28-03-2010, 19:58

**update**

i've changed the spring in the dump valve for a lower psi one (donation from a mate) but still no PSSSSSSSHHHHH!

after further examination, the vacume is in the correct place & sucking good, boost pipe are tight & secure, actuator hose replaced & secure, but boost gauge is not budging?

i've noticed the arm on the actuator is not moving when revving?