Turbo not right

[GavMc P11GT]

New turbo fitted last year done about 1000 mile and now I’m worried.

Cannot find a boost leak anywhere what could this be?

Couldn’t upload a video so here’s a YouTube link

No play on the turbo

 

[Dellmassive]

Blocked dpf/exhaust?.

Map the two dpf pressure sensors and graph them

 

[GavMc P11GT]

I’ve had the DPF gutted and mapped out mate

 

[Dellmassive]

Ok.

What engine?

What age van?

What millage?

Why was the turbo replaced? - was it set to high oil pressure mode for the 1k run in?

The the problem when driving? No power or boost pressure?

 

[GavMc P11GT]

2016 102 2.0 TDI

109k

 

[GavMc P11GT]

Ok.

What engine?

What age van?

What millage?

Why was the turbo replaced? - was it set to high oil pressure mode for the 1k run in?

The the problem when driving? No power or boost pressure?

The previous turbo dropped the nut was a blocked DPF originally new one was filled with oil and had pipes replaced too don’t think anything was done with oil pressure that I recall

 

[Dellmassive]

so how does it drive. . .

are you worried about the sound? or a lack of boost?

 

[GavMc P11GT]

so how does it drive. . .

are you worried about the sound? or a lack of boost?

It actually drives fine it’s the sound more than anything and obviously given the price of them I’m petrified it’s gonna die. There’s no smoke or owt no play on the shaft I just can’t get my head round it.

 

[Dellmassive]

maybe check:

the rear EGR pipe,
EGR cooler,
Front EGR pipe,
turbo wastegate (assuming this was set correctly when fitted?)
front & rear charge intercooler pipes,
intercooler itself.
inlet manifold/or gasket (its plastic)

if the boosted air is leaking, then you should be able see/smell/feel it.

sooty if on the exhaust side, clear if on the intake side.

try another video clip but move the phone around the engine bay and under the van, you might be able to hear a better direction.?

 

[GavMc P11GT]

The wastegate was supposedly preset so hasn’t been altered the sound is 90%cert from the area of the turbo I double checked the rest today it’s got a brand new intake on it too.

I wonder if it’s a wastegate issue then?

 

[Dellmassive]

possibly?,

the engine manual does show the setting amount and play etc. . .

its possible its a bit tight and bleeding pressure under boost?

whats the engine code?



.



example from here:


InstallingInstall in reverse order of removal, observing the following:– If vacuum unit was renewed with position sender 2 for chargepressure positioner - G580- , original dimension -a- of controlrod must be determined.– Transfer calculated dimension -a- to new threaded rod. To dothis, unscrew nut until dimension -a- is correct.– Guided threaded rod -1- of vacuum unit through opening oflever arm -3-.– Tighten bolts -4-.– Screw on nut -2- by hand.– Connect connector -5-.– Connect ⇒ Vehicle diagnostic tester.– Switch on ignition.– Read voltage value ⇒ Vehicle diagnostic tester, 01 - Systems capable of self-diagnosis , 01 - Diesel direction injection and preglow system EDC 17 , 01 -Engine electronics functions , 01 Reading measuredvalues , Turbocharger 1 turbine bypass valve1 B. 1,

4-cylinder common rail engine CXEB CXFA CXGA CXGB CXHA CXGC CXHB

5 Feb 2023

CXEB CXFA CXGA CXGB CXHA CXGC CXHB

• Loz
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• VW Manuals

 

[Dellmassive]

VW Manuals

VW T6 Vehicle & Product Manuals

www.t6forum.com

 

[GavMc P11GT]

CXGB

 

[GavMc P11GT]

What do we do if we don’t have the original rod length can’t be determined?

 

[GavMc P11GT]

I don’t think my actuator is actually adjustable it doesn’t look the the single turbo has the nut

 

[GavMc P11GT]

I don’t think my actuator is actually adjustable it doesn’t look the the single turbo has the nut

View attachment 324132

Hey @mmi what’s your thoughts buddy?

 

[DXX]

Read it cover to cover and watched the video, it drives ok, what’s the perceived problem?

 

[GavMc P11GT]

Read it cover to cover and watched the video, it drives ok, what’s the perceived problem?

The whistle isn’t normal you can hear it echoing back from buildings as you pass by etc is worse when being driven.

 

[GavMc P11GT]

Just a thought could the Remap contribute to all of this?

I’ve hunted all over, smoke tested, pressure tested, replaced all seals etc I’ve had a stephacope on the turbo there’s no odd sounds on either side theres no play on the shaft.

When I did the turbo I got rid of the DPF adblue and the EGR it was taken from 102 to 147bhp

Could it be the map?

 

[DXX]

Given that the DPF was gutted at the same time as the turbocharger was replaced I would say that that the differential pressure across the turbocharger exhaust turbine is greater than before (more RPM). Whether this translates into a more audible signature I have no idea. Are you sure that the turbocharger replacement is like for like and did any other performance enhancing maps take place at the same time ie fuelling (higher exhaust mass flow)?
If you suspect there is a leak I would suggest a static smoke test for starters.