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Can I Test the Turbo At Home?

Can I Test the Turbo At Home?

Author
Discussion

zakmuh

Original Poster:

166 posts

31 months

Thursday 7th September
quotequote all
Hi,

I've got a 2003 Sorento 4x4 2.5 CRDi. I just want to know if I could check the turbo wastegate actuator is working by revving the engine high, parked on the drive way.

Would this make the wastegate lever move or do I have to drive the car on the road to test this?

I'm just cleaning up the engine, so as I'm at it, I want to check it. Any help on this is highly appreciated.

Cheers

Edited by zakmuh on Thursday 7th September 15:32

zakmuh

Original Poster:

166 posts

31 months

Thursday 7th September
quotequote all
Hi,

I've got a 2003 Sorento 4x4 2.5 CRDi. I just want to know if I could check the turbo wastegate actuator is working by revving the engine high, parked on the drive way.

Would this make the wastegate lever move or do I have to drive the car on the road to test this?

I'm just cleaning up the engine, so as I'm at it, I want to check it. Any help on this is highly appreciated.

Cheers

Edited by zakmuh on Thursday 7th September 15:39

TooMany2cvs

17,337 posts

47 months

Thursday 7th September
quotequote all
zakmuh said:
I've got a 2003 Sorento 4x4 2.5 CRDi. I just want to know if I could check the turbo wastegate actuator is working by revving the engine high, parked on the drive way.

Would this make the wastegate lever move or do I have to drive the car on the road to test this?
Without load on the engine, you won't get enough boost to wake the wastegate up.

Are you thinking it's seized for any particular reason, or just because it might be fun to fiddle with?

zakmuh

Original Poster:

166 posts

31 months

Thursday 7th September
quotequote all
Thanks for your reply. I think it's seized.

When you rev high, it builds pressure from the exhaust and that would be enough for the actuator to kick in, I thought?

TooMany2cvs

17,337 posts

47 months

Thursday 7th September
quotequote all
zakmuh said:
Thanks for your reply. I think it's seized.

When you rev high, it builds pressure from the exhaust and that would be enough for the actuator to kick in, I thought?
No.
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zakmuh

Original Poster:

166 posts

31 months

Thursday 7th September
quotequote all
Okay.

I have to check with a pressure meter then.

Cheers

GreenV8S

24,624 posts

205 months

Thursday 7th September
quotequote all
zakmuh said:
Okay.

I have to check with a pressure meter then.

Cheers
How do you propose to do that?

I would have thought it would be easy enough to check whether it is seized by moving it with your hand.

McVities

157 posts

119 months

Thursday 7th September
quotequote all
Interesting..............

You want to test a part, kudos for having a go.
Do you know where the actuator is?

This thread would suggest not.................


Other post


The part with the hose missing is indeed your actuator.


Get a length of vacuum hose and attach one end to the actuator and the other end to a bicycle tyre pump. Pump a few times and the actuator should start to crack open.

Then find a vac hose diagram and see if any are missing from your engine bay.

eliot

7,631 posts

175 months

Thursday 7th September
quotequote all
McVities said:
Interesting..............

You want to test a part, kudos for having a go.
Do you know where the actuator is?

This thread would suggest not.................


Other post


The part with the hose missing is indeed your actuator.


Get a length of vacuum hose and attach one end to the actuator and the other end to a bicycle tyre pump. Pump a few times and the actuator should start to crack open.

Then find a vac hose diagram and see if any are missing from your engine bay.
It is an actuator - not sure its the wastegate one though. That looks like an inlet manifold rather than a turbo to me.

zakmuh

Original Poster:

166 posts

31 months

Friday 8th September
quotequote all
McVities said:
Interesting..............

You want to test a part, kudos for having a go.
Do you know where the actuator is?



The part with the hose missing is indeed your actuator.
Thanks but the wastegate actuator is on the turbo unit, right next to the exhaust manifold and it has a vacuum hose connected to it - the one on top of the inlet manifold, shown in my other thread pic is NOT the actuator.

Like he said, I can test the actuator with cycle pump. when pressure is pumped (not pumping), the lever should stay for 30 seconds or so

stevieturbo

12,580 posts

168 months

Friday 8th September
quotequote all
That makes the assumption it's a pressure based unit rather than vacuum.

But do you even state what the alleged problem is with the vehicle ?

This isnt the first series of strange posts about this vehicle ?

zakmuh

Original Poster:

166 posts

31 months

Friday 8th September
quotequote all
There's a hose connected to the wastegate (which I've called it 'vacuum hose') but I don't know whether the actuator is activated my pressure or vacuum.

I'm not a mechanic, just a DIYer and that's why I'm here seeking advice on this issue smile

GreenV8S

24,624 posts

205 months

Friday 8th September
quotequote all
zakmuh said:
I'm not a mechanic, just a DIYer and that's why I'm here seeking advice on this issue smile
My advice: don't fiddle with it unless you gave a good reason. Pulling hoses on and off and applying vacuum or pressure can introduce new problems on top of whatever it is you are trying to solve here - which you still haven't mentioned yet. Since you don't seem to know what the devices are for that you want to test, or understand how to test them, it is unlikely that your tests will yield any useful information.

zakmuh

Original Poster:

166 posts

31 months

Friday 8th September
quotequote all
Noted, I'll let it be as it is

The EGR valve and the intake manifold is all clogged up, I suspect the wastegate must also have got carbon built up. So I wanted to check if that lever rod is moving or stuck.



Cheers