No turbo boost

chrisstdt · Aug 16, 2023

300 tdi defender loss of lower and some black

When revved intercooler pipes suck in instead of expanding

Checked rubber hoses for internal damage all good ,intercooler not blocked

Waste gate can be moved with a bar but it doesn't move when revved

Could the actuator be at fault and if so what makes it work ?

steve2286w · Aug 16, 2023

Maybe this will help

lynall · Aug 16, 2023

Clue is ic pipes sucking in, remove trunking to turbo make sure (engine off!) turbine spins, then with trunking off give it some revs and see if pipes still suck in.
Wont get turbo actuator to move with car at a standstill.

chrisstdt · Aug 16, 2023

Tried it with pipe from air filter off and the result was the same

D1Nut · Aug 17, 2023

check the long thin pipe from turbo round back of engine going to top of injector pump for blocking or leaks

as mentioned above without load you won't get any boost - so pipes can't fill up with air

if you suspect actuator disconnect pipe from actuator and block with a bolt

lynall · Aug 17, 2023

chrisstdt said:
Tried it with pipe from air filter off and the result was the same

Did you check if the turbine is spinning with engine running?

chrisstdt · Aug 17, 2023

lynall said:
Did you check if the turbine is spinning with engine running?

No not checked that is it possible impellor shaft had broken and inlet side will still spin with little play in shaft?

lynall · Aug 17, 2023

chrisstdt said:
No not checked that is it possible impellor shaft had broken and inlet side will still spin with little play in shaft?

I was more thinking damaged turbo turbine causing a restriction in air flow hence sucked in hoses as you rev it.
Turbos can break in all sorts of weird ways.

Air filter wet and broken up with bits sucked into turbo
Fag butt sucking onto paper filter and the high speed air rushing passed causes it to set the air filter on fire, again all the bits go through the turbo, used to be a big problem on Scania trucks many years ago.

kevstar · Aug 17, 2023

chrisstdt said:
300 tdi defender loss of lower and some black

When revved intercooler pipes suck in instead of expanding

Checked rubber hoses for internal damage all good ,intercooler not blocked

Waste gate can be moved with a bar but it doesn't move when revved

Could the actuator be at fault and if so what makes it work ?

Check the crack case breather isnt blocked.

chrisstdt · Aug 18, 2023

Thanks il check cyclone breather and take exhaust off to check exhaust side of impeller

lynall · Aug 18, 2023

chrisstdt said:
Thanks il check cyclone breather and take exhaust off to check exhaust side of impeller

That is a thought, have you tried it with the ex downpipe removed/loosened?
You never know got to be worth a look.
Anything wedged up the tailpipe?

chrisstdt · Aug 20, 2023

lynall said:
That is a thought, have you tried it with the ex downpipe removed/loosened?
You never know got to be worth a look.
Anything wedged up the tailpipe?

That's a good one to try thanks
Was at an rtv yesterday so repairing the damage from that now ! Will get a look at this one next week

No turbo boost

chrisstdt

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steve2286w

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lynall

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chrisstdt

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D1Nut

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lynall

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chrisstdt

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