[tdashmike]

If you have a moment, I would appreciate it if you could listen/watch my video of a 2013 Cayenne Diesel that has a ticking sound? Is this normal? It seems to be only coming from the passenger side where cylinder 3 is. I’m not sure why in the video it sounds like the ticking sound is also on the driver’s side. It concerns me because within the last two months, I have had the glowplug light flash and go into limp mode under hard acceleration. If I turn off the car and back on it goes away and I can drive normally again. I checked with a code reader after this happened and there are two codes P0269 - Cylinder 3 fuel injector deviation and P2146 - Duel injector supply open voltage. I also check the injector quantity and cylinder 3 injector is around +4mg/stroke while the other ones are just a little negative. The car seems to be running ok but seems to shake or stutter very slightly every once in a while. No check engine light, 125k miles on the car. Any help is appreciated!

 

[Odessa]

This is the hard part.

Anyone here is going to ask for a scan first.

The bible is the VCDS.

VCDS is not Cayenne compatably.

Sorry .. its the only real way ... really and i dont think most of us would want to throw you in the wrong direction as with modern vehicles scans are needed to interprete what else is going on.

I note and agree that others here with more experience in this specific field will chim of coarse .

Hang in there till then.

Only other option IMHO is have a Porsche scan and get input from them.

 

[Odessa]

I cant really comment on the injection quality deviation as not my thing .... but if i put my old school petrol V8 hat on that sound in the clip sounds a lot like tappets.

I know its not the place to start but curious have you changed the type of oil you are using lately ? And petrol type ?

 

[RocketTech]

Use a Mechanics stethoscope to pin-point the sound. Sometimes you can put your hand at arm's length to block sounds, as if you were blocking a bright light source. If the volume decreases as you put your hand in front of it ( a foot or two away), that's the source.
The injectors are going to make a ticking noise when they open to inject.
From the information you give, I'd guess #3 injector is bad or has a loose connection.

 

[tdashmike]

This is the hard part.

Anyone here is going to ask for a scan first.

The bible is the VCDS.

VCDS is not Cayenne compatably.

Sorry .. its the only real way ... really and i dont think most of us would want to throw you in the wrong direction as with modern vehicles scans are needed to interprete what else is going on.

I note and agree that others here with more experience in this specific field will chim of coarse .

Hang in there till then.

Only other option IMHO is have a Porsche scan and get input from them.

So what would you be looking at with VCDS? I can try to find the same sensors in my scanner. Thanks.

I cant really comment on the injection quality deviation as not my thing .... but if i put my old school petrol V8 hat on that sound in the clip sounds a lot like tappets.

I know its not the place to start but curious have you changed the type of oil you are using lately ? And petrol type ?

Well, I try to use Kroger diesel but I have been traveling and have got gas from several places so it could be a fuel quality issue.

Use a Mechanics stethoscope to pin-point the sound. Sometimes you can put your hand at arm's length to block sounds, as if you were blocking a bright light source. If the volume decreases as you put your hand in front of it ( a foot or two away), that's the source.
The injectors are going to make a ticking noise when they open to inject.
From the information you give, I'd guess #3 injector is bad or has a loose connection.

I measured all 6 injectors today and the all came in around 170k to 190k ohms. It was jumping around within that range, not sure what the value should be after a google search.

The odd thing is there is no check engine light and it appears to be intermittent? The only sure thing is that the deviation is much higher on injector #3 and that's where the codes point to also. I will try the screwdriver stethoscope trick after lunch.

 

[tdashmike]

Ok, so I used a pry bar on the fuel rail nut on the injectors, I had the handle end right up against my ear. They all make a ticking sounds but on cylinder #3 there is a lower frequency knocking sound. So instead of tick tick tick it's tok tok tok tok with the ticking sound on top of that but the tok sound is much louder.

 

[Brendanm]

Probably injector seal. Is there also some black carbon looking stuff coming out the weep hole on the cinder head, onto the exhaust manifold?

If it has been leaking for a while, the nozzle on the injector may be warped/damaged and you may need to replace the injector.

 

[Odessa]

if its an injector seal (they are a copper washer and they disintergrate and perish over time) you will be leaking fumes so easy to smell that and maybe also hear a high pressure tist tist tist sound.

 

[tdashmike]

I can't really tell but I did record another video right next to the injector. This is an excellent video by the way,

.

The injectors have the Audi logo on them but I'm not sure I can use an Audi one. If I install a new Audi one I hope the Porsche diagnostic tool can do the injector coding. Prices for reference, the Porsche price injector is almost 5 times the cost....

2013 Audi Q7 TDI Prestige Sport Utility 3.0L TDI V6 DIESEL A/T Fuel Injector - 059130277EM - Genuine Audi Part

Fuel Injector. 2013 Audi Q7 TDI Prestige Sport Utility 3.0L TDI V6 DIESEL A/T. Genuine Audi Part - 059130277EM (059-130-277-EM, 059130277CP)

parts.audiusa.com

2013 Volkswagen Touareg 3.0L TDI V6 DIESEL A/T TDI Sport Sport Utility Fuel Injector - 059130277AM - Genuine Volkswagen Part

Fuel Injector. 2013 Volkswagen Touareg 3.0L TDI V6 DIESEL A/T TDI Sport Sport Utility. Genuine Volkswagen Part - 059130277AM (059-130-277-AM, 059130855HX)

parts.vw.com

2013-2016 Porsche Cayenne Injector 958-110-128-21 | Sunset Porsche Parts

2013-2016 Porsche Cayenne part # 958-110-128-21 - Injector

www.sunsetporscheparts.com

 

[Brendanm]

You may not need an injector. Remove things until you can see if it is leaking out the weep hole. If it is, remove the injector and have a look at it. When you replace the injector or seal, you have to replace the hold down bolt, it is torque to yield so can only be use once. The injector sealing washer and the hold down bolt have superceded, not sure which version yours will have from factory, but you want to fit the latest versions.

You can find out what injector you need by the part number if/when you remove it.

 

[volkswagens-for-life]

It sounds like a pounding injector

 

[Phredd]

If you have a moment, I would appreciate it if you could listen/watch my video of a 2013 Cayenne Diesel that has a ticking sound? Is this normal? It seems to be only coming from the passenger side where cylinder 3 is. I’m not sure why in the video it sounds like the ticking sound is also on the driver’s side. It concerns me because within the last two months, I have had the glowplug light flash and go into limp mode under hard acceleration. If I turn off the car and back on it goes away and I can drive normally again. I checked with a code reader after this happened and there are two codes P0269 - Cylinder 3 fuel injector deviation and P2146 - Duel injector supply open voltage. I also check the injector quantity and cylinder 3 injector is around +4mg/stroke while the other ones are just a little negative. The car seems to be running ok but seems to shake or stutter very slightly every once in a while. No check engine light, 125k miles on the car. Any help is appreciated!

View attachment 240806

View attachment 240807

That clicking sound would immediately make me think of a cracked exhaust manifold, not unhreard of on hard-driven Touaregs, mine was replaced at 100,000km

 

[volkswagens-for-life]

That clicking sound would immediately make me think of a cracked exhaust manifold, not unhreard of on hard-driven Touaregs, mine was replaced at 100,000km

A Diesel wouldn't make that noise with a bad gasket. That's a sound a gasser would make. a diesel with a leaky gasket would just sound like a loud diesel or maybe you would hear the turbo a little louder

 

[tdashmike]

Well, I’m out of ideas until I pull the injectors and have them tested and do a compression test. Should find out this Friday.

I also noticed that the engine will stutter if the pedal is held steady sometimes. There is also a clattering sound coming from the engine whenever I accelerated harder for a the first second or two.

There is some good info here also:

Chevrolet-GMC Diesel Diagnostics

2011-2016 6.6 L | 2007.5-2010 6.6 L | 2001-2007 6.6 L | 6.5 L DS Pump | 1982-1993 GM/Ford IDI 2011-2016 6.6L LML – LGH Duramax PDF: 2011 – 2016 6.6L LML – LGH Duramax In order to do proper diagnostics you will need a scan tool, diagnostic service information and some special tools such... Read...

oregonfuelinjection.com

 

[volkswagens-for-life]

Ya those symptoms definitely lead me to believe a pounding injector. Still under warranty?

 

[Phredd]

A Diesel wouldn't make that noise with a bad gasket. That's a sound a gasser would make. a diesel with a leaky gasket would just sound like a loud diesel or maybe you would hear the turbo a little louder

That's EXACTLY the sound my cracked exhaust manifold made, a firm 'clicking' noise, so still worth considering, cost $800 to replace

 

[tdashmike]

Ya those symptoms definitely lead me to believe a pounding injector. Still under warranty?

Yeah, it’s still under the VW diesel emissions warranty. I like figuring out what the problem is so this was a great help. I got zero responses on the Porsche forum but that’s probably because there weren’t that many of these made compared to the Audi and VW diesel cars. I should probably consider this in the future but if I get another Porsche under warranty I need to move closer to a dealership! The closest dealership is 2.5 hours away and is out of state so they said they can’t give me a loaner.

 

[volkswagens-for-life]

That's EXACTLY the sound my cracked exhaust manifold made, a firm 'clicking' noise, so still worth considering, cost $800 to replace

You have a tdi?
Also, the additional symptoms he described don't point to a manifold it's something mechanical

Yeah, it’s still under the VW diesel emissions warranty. I like figuring out what the problem is so this was a great help. I got zero responses on the Porsche forum but that’s probably because there weren’t that many of these made compared to the Audi and VW diesel cars. I should probably consider this in the future but if I get another Porsche under warranty I need to move closer to a dealership! The closest dealership is 2.5 hours away and is out of state so they said they can’t give me a loaner.

Ouch that's rough man. Keep us posted on the fix!

 

[tdashmike]

@volkswagens-for-life By the way, what's a pounding injector? I googled it but nothing came up.

 

[volkswagens-for-life]

Just a reference to the sound heard when a piston, valve, poppet or otherwise goes bad. They get real noisy and almost sound like they're pounding like a light hammer. Also happens w/ bad o-rings etc.