chrisstdt

Well-Known Member

• Aug 16, 2023

• #1

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

Well-Known Member

• Aug 16, 2023

• #2

Maybe this will help

 

L

lynall

Well-Known Member

Full Member

• Aug 16, 2023

• #3

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

Well-Known Member

• Aug 16, 2023

• #4

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

 

D1Nut

Well-Known Member

• Aug 17, 2023

• #5

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

 

L

lynall

Well-Known Member

Full Member

• Aug 17, 2023

• #6

chrisstdt said:

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

Click to expand...

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

 

chrisstdt

Well-Known Member

• Aug 17, 2023

• #7

lynall said:

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

Click to expand...

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

 

L

lynall

Well-Known Member

Full Member

• Aug 17, 2023

• #8

chrisstdt said:

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

Click to expand...

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

Well-Known Member

Full Member

• Aug 17, 2023

• #9

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 ?

Click to expand...

Check the crack case breather isnt blocked.

 

chrisstdt

Well-Known Member

• Aug 18, 2023

• #10

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

 

L

lynall

Well-Known Member

Full Member

• Aug 18, 2023

• #11

chrisstdt said:

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

Click to expand...

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

Well-Known Member

• Aug 20, 2023

• #12

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?

Click to expand...

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