Hi this is my first subaru, basically car was working fine this morning jumped in it 4 hours later turbo worked for a short time, but now my turbo isn't working at all, car still runs etc but no turbo, my boost guage stays below 0 help me please

 

A little more information on the car would help, age, mods ect.

First move would be to check the whole boost/vac system for blocked/cracked/split or off hoses, including the hose to the rear of the boost gauge and the one under the i/c.

Can you hear any air leaks when driving??

 

Its 1995 has prova ecu remapped, ecu exhaust with decat, air filter dump vavale and fmic, going to have a check of all pipes but can't here any air leeks

 

check your fmic pipes as the same happened to me and my turbo fmic pipe had come out.

 

Dump Valve, not a Bailey is it?

Give it a good looking at either way.

 

Its a hks dump valve, am I still okay to drive it??

 

Not really!

You have no idea what the fault is.

 

Got a feeling its fmic because car is geeting warm faster than normal

 

Checked all pipes can't find no leaks or loose piping, only intercooler was slightly loose, tightened all up and still no job so I'm guessing its turbo

 

Have you tested and/or cleaned the BCS??

 

What's is a BCS? Thanks

 

https://www.scoobynet.com/technical-...-solenoid.html

 

I don't have A, B or C pipe connected to the BCS. But I have a manual boost control valve on my engine

 

If it is a cheaper MBC then the spring may have gone soft.
Personally, i would test the BCS and if it works, re-plumb it and see if the boost comes on as it should.

You must also ask 'why' has the MBC been fitted??

 

When I rev the engine the BCS makes a clicking noise, I was only running 11psi before, should I try and disconnect the MBC and see if I get any pressure through the pipe? As I'm not sure how to plumb the BCS back in

 

Re plumbing the BSC is easy, one of the hoses from the MBC goes to the turbo and the other to the actuator. In the diagram below you will see you merely replace the MBC with the BCS.




If you remove the hose from the turbo nipple or actuator BE VERY CAREFUL as you can easily boost to destruction in this state.

 

Pipework isn't long enough to reach to BCS but I disconnected. MBC and left pipes there, started engine and reved there was no pressure through pipes

 

Tried everything nothing to do with pipes bcv mbv, took air filter and piping off to get to turbo, tried to spin the fan and was solid. Managed to free it off so was spinning freely but soon as I started car it seized again

 

sounds bad!

 

What fuel are you running?

Tony

 

Shell v power