Put the dump valve back on and replaced the crankshaft pulley amongst a few other small jobs. Gave it a run and it's only pushing 12psi. I did knock the Amal valve with a spanner a couple of times fairly lightly, but strong enough to bend the plug on top. Could this cause the above issue? But I notice I still have "wastegate chatter" in addition to the dumpvalve opening.

It should be 24psi so it's halved
Obv saph 4x4 cos

Gurus please give me your knowledge

Anything else you need to know?

Dan

 

Yes, I think that could be because of the amalvalve. If you unplug it, it will also boost low as it will not switch to the bleed anymore. Maybe the electrical connections are not OK.

 

Try disconnecting your amal valve, if it boosts to the same pressure then it's fooked

 

Did you remove or replace any of the pipes on the amal valve? the reason I ask is I did this and forgot to put the little regulator that sits in one of the amal valve pipes back, this caused me a loss of boost


Luciano

 

Cheers guys, i'l charge my battery then give that a go. Not had the pipes off it, and the connectors seem ok. Is there a way of removing the valve completely without the need for some kind of setup?

Cheers

Dan

 

Does the amal valve click when you turn the ignition on ?

Steve

 

If I remember rightly it clicked if I unplugged it and the plugged it back in. It was a few weeks ago though, it's been sat in the garage since then and I've only just put the battery back on charge..

Dan

 

With the engine running that is...

 

Id have said to remove it you need some kind of manual boost control eg bleed valve etc but wouldnt recommend them to anyone. seen to many horror stories with these. generaly through mis use or people messing about with them for more boost. Thus running lean and creating meltdown

 

I'l give that a miss then thanks lol

Cheers

 

Is an atmospheric dump valve or is it recirculating ?

 

If it's a recirculating dump valve, is it the correct way round ?

 

It's atmospheric

Dan

 

could the diaphragm in the dump valve split ?

 

My advice would be to remove dv,block the pipe(broom handle size) and try that.If still no boost by pass the amal and try that but dont go mad because it will probably over boost.Yes the diaphragm can split but surely you would here the air escaping when it trying to build up boost.Mine used to run at 22-24psi,amal valve packed up and it resorted to about 10-12psi=shit slow lol.

 

Update- started it up today and it's fixed itself

I like it when things like that happen

Cleaned up the electrical plug and all seems good...