 | Home > Puma (Tdci) > Air Inlet and Dust |
 
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| CapeLandy Member Since: 21 Jul 2008 Location: Cape Town Posts: 558  
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I opened my air filter during my holiday trip after the first week and blew out the dust from the element at a garage from the clean side to the dirty side. Refitted and almost 95% sure the tabs at the back were properly in place as the clips pulled down nicely.
After another week and a half after going through the Etosha park which has extremely fine powder like dust I opened up the filter again and noted that very fine powder coating all on the insides of the clean part of the filter housing and into the hose to the turbo suction. I cleaned everything as best I could and refitted the element and cover and checked again after a day’s driving and found she stayed perfectly clean. Now that I am home I got worried about how much dust entered my intake so I removed the hose between intercooler and inlet manifold and found the hose had some dust but more worrying is the gunge in the actual steel pipe to the manifold. It consists of black oil mixed with what I assume is the fine dust. There is a branch pipe going from this intake somewhere downwards and I assume the oil mist comes up there and then entered the manifold. I have taken out my intercooler and hoses and tried to determine how much dust is there but with the fine coating of oil from the tappet breather it is hard to tell because of the black smear of oil. Is this sounding to me like I might have ruined the engine and had better sell it quick? What else can I remove to check or is it possible to get away with it? Some pictures below. Any usefull advice from those in the know.  Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge |
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4th Jul 2010 11:34am |
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| CapeLandy Member Since: 21 Jul 2008 Location: Cape Town Posts: 558
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That bit is clear of oil yes but having scratched a little further - it feels like the gunge may even be from the EGR valve where it dumps into the manifold through the branch pipe. I am bussy removing this complete pipe from the EGR and the steel pipe to the manifold to confirm if the gunge starts already at the EGR side of the pipe or only from the joint at the manifold so I can tell whether it is soot or dust/grit!
Let you know what I find |
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4th Jul 2010 12:48pm |
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| Tim_NZ Member Since: 05 May 2008 Location: Australia Posts: 177 
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Hi Capelandy, I pulled my MAPT sensor a while ago because my scangauge was showing an overly high inlet air temp. The thing was completly gunked up, not with dust, but black carbon sludge, I was supprised it worked at all! A bit of carby clean and all was well.
Looks like you've had a little bit of dust past the filter, hopefully not too much of it got to your engine  Like MK said, there is a bit of oil in the intake system from the breather, hopefully this film of oil on everything may have caught most of the dust? Looks like there is less dust the further you get through the inlet system.
Cheers, Tim |
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4th Jul 2010 1:30pm |
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| CapeLandy Member Since: 21 Jul 2008 Location: Cape Town Posts: 558
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Looks a bit more grim the more I take off.
The steel pipe from the EGR valve is clean as a whistle. The manifold entry pipe as well as the manifold are caked in a mix of oil and dust. The turbo inlet has also a lot of dust mixed with oil. I assume the turbo bearings should be ok and free of the dust but the manifold I will remove and clean. Looks like it was a fair bit of dust. I make a habbit of not following other vehicles close by and I also press in the clutch and throttle off when passing oncomming vehicles in the dust. I think the film of oil trapped a lot of dust but when I take off the manifold I should be able to feel inside how much entered the engine. Is there any remedy if the cylinders did get well dusted or is it a rebuild scenario or strip and clean? I will probably have to do it myself if that's the case. Some pictures of the dust below. Click image to enlarge Click image to enlarge Click image to enlarge Click image to enlarge |
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4th Jul 2010 1:51pm |
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| Tim_NZ Member Since: 05 May 2008 Location: Australia Posts: 177
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Can you get it inspected with a borescope through the glow plug/injector ports to see if there is any scoring on the cylinder walls? You may also want to get the sump oil tested for contaminants to give you an idea on how much dust went through the engine.
Cheers, Tim |
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4th Jul 2010 2:02pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2427  
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Is it still on warranty? I guess not
And any chance a turbo seal is done Puma 110" SW ............................................................. Earth first. Other planets later |
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4th Jul 2010 2:13pm |
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| CapeLandy Member Since: 21 Jul 2008 Location: Cape Town Posts: 558
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It is under warenty but this was clearly my fault - I can only guess I never refitted the filter housing 100% - no other way this could have happened.
I have a scope at work so I can have a look as you suggested down a glow plug bore. I had also planned to drop the oil anyways so will have to get it analysed and see what they say. |
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4th Jul 2010 2:20pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2427
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Yep a good oil analyses including particles count should say the truth. Puma 110" SW
............................................................. Earth first. Other planets later |
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4th Jul 2010 2:33pm |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586 
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Do not worry it is normal, it is EXHAUST GASES recirculated by the EGR valve mixed with the oil that came from the oil vapor closed loop circuit.
Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License |
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4th Jul 2010 4:27pm |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586
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This is the reason why I run with EGR blanked from new...... Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License |
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4th Jul 2010 4:29pm |
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| MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2427
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Assuming you still have your MIL on, have you thought of running a hose from the air intake circuit to after the EGR valve?  Puma 110" SW
............................................................. Earth first. Other planets later |
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4th Jul 2010 5:04pm |
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| CapeLandy Member Since: 21 Jul 2008 Location: Cape Town Posts: 558
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Problem is it feels a little more abrasive than soot from the EGR almost like a fine grinding paste. The fact that there was such a thick layer of dust in the turbo inlet and pipe makes me worried as hell. When I stuck my finger in the EGR exit pipe it felt very clean and did not leave any marks on my finger. I was not able to worm the pipe out from the engine but did have space for my finger. |
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4th Jul 2010 5:06pm |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586
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Yes my MIL is always ON  
why? Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License |
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4th Jul 2010 8:54pm |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586
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Have you a photo of turbo inlet and turbo intake? Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License |
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4th Jul 2010 8:58pm |
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