P38 diesel turbo

Rubberknees · May 5, 2025

Do I have a turbo problem? have noticed over past few days when accelerating and especially going uphill a slight loss in power and a sound like air under pressure escaping coming from the turbo. Could it be wastegate problems. All hoses were changed last year and nice and tight. Is it worth using a turbo cleaning spray in case of crap build up. All advice gratefully received Thank you

kermit_rr · May 5, 2025

Are you sure it's not a split charge pipe?

Rubberknees · May 5, 2025

kermit_rr said:
Are you sure it's not a split charge pipe?

Pretty sure

Mark Piercy · May 5, 2025

Any oil residue around the intercooler or pipes ?

Rubberknees · May 5, 2025

Mark Piercy said:
Any oil residue around the intercooler or pipes ?

Slight but not I would have thought excessive

Datatek · May 5, 2025

Hoses replaced? Maybe not seated properly? I doubt it's the wastegate as that vents into the exhaust if I remember correctly.

Rubberknees · May 5, 2025

Datatek said:
Hoses replaced? Maybe not seated properly? I doubt it's the wastegate as that vents into the exhaust if I remember correctly.

One of the first things I checked. All nice and snug

Flossie · May 5, 2025

I think nano can read boost?

Datatek · May 5, 2025

Flossie said:
I think nano can read boost?

It can.

RangeRoller dt · May 5, 2025

Little holes in intercooler made that noise with me. Showed up when I filled it up with petrol and soaked it. Weren’t big either just little weeping bits

Wastegate can get cruded up

Rubberknees · May 5, 2025

Flossie said:
I think nano can read boost?

Plugged hawkeye in that reads boost. Nanocom with Shaun. At tick over got .89 bar on atmospheric and same on boost, took up to 3500 revs and got1.005 bar. Sure thats a bit low, thought should be around 1.5 bar.

Rubberknees · May 5, 2025

RangeRoller dt said:
Little holes in intercooler made that noise with me. Showed up when I filled it up with petrol and soaked it. Weren’t big either just little weeping bits

Wastegate can get cruded up

Intercooler was new 10 years ago, don't know life span of them.
Wondering about wastegate crudded up as have known that to happen before on other vehicles

Datatek · May 5, 2025

Rubberknees said:
Plugged hawkeye in that reads boost. Nanocom with Shaun. At tick over got .89 bar on atmospheric and same on boost, took up to 3500 revs and got1.005 bar. Sure thats a bit low, thought should be around 1.5 bar.

I'll have to check but I think 1 bar over atmospheric is correct.

Flossie · May 5, 2025

She's got to be pulling hard under load like up a hill for max boost.

Rubberknees · May 5, 2025

Flossie said:
She's got to be pulling hard under load like up a hill for max boost.

Will get some one sat next to me tomorrow with diags plugged in to take some live readings whilst driving around

Datatek · May 5, 2025

Rubberknees said:
Will get some one sat next to me tomorrow with diags plugged in to take some live readings whilst driving around

14.7psi or 1 bar seems normal. 1.2 bar may be possible.

Rubberknees · May 5, 2025

Datatek said:
14.7psi or 1 bar seems normal. 1.2 bar may be possible.

Thank you kind sir

Rubberknees · May 7, 2025

Well bought a can of Wynnes EGR and turbo cleaner and sprayed it in inlet pipe to the turbo. Took my time nice and steady. Wow took it for a spin and the difference is very noticeable. Quieter, more powerful overall a lot lot better. I am pleasantly surprised but very happy with the outcome.

Grrrrrr · May 7, 2025

Hose delaminating inside? Any black smoke?

That heat shield under the intercooler inket all good?

Rubberknees · May 7, 2025

Grrrrrr said:
Hose delaminating inside? Any black smoke?

That heat shield under the intercooler inket all good?

New hoses. No black smoke. A bit when I ran cleaner through but none at tick over and reving

P38 diesel turbo

Well-Known Member

Very

Well-Known Member

Well fumbled member....

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Sprung Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Technician, Bodgit & Scarper Ltd

Well-Known Member

Similar threads