No air filter on EGR intake?

IowaJetta · May 15, 2006

I just bought a 2001 Jetta TDI and I noticed that there is no air filter for the fresh air inlet on the EGR valve. It looks to me that fresh air comes through the intercooler radiator and staight into the EGR valve and into the engine with no air filter or a place to put an air filter. So it looks to me like dirty air is being sucked straight into the engine.

Has anyone noticed this?

jasonTDI · May 15, 2006

What the heck are you talking about?

First there is no fresh air inlet on the EGR.

Second, all air into the engine is drawn in through the air filter box on the drivers side.

dieseldorf · May 15, 2006

This is great material !

IowaJetta said:
So, it looks to me like dirty air is being sucked straight into the engine.

Has anyone noticed this?

jasonTDI · May 15, 2006

Well, I correct that to read the only fresh air is what comes FROM the air box in through the black elbow hose.

Wonko the Sane · May 15, 2006

IowaJetta said:
I just bought a 2001 Jetta TDI and I noticed that there is no air filter for the EGR valve. It looks to me that EXHAUST GAS comes staight into the EGR valve and into the engine with no air filter or a place to put an air filter. So it looks to me like dirty air is being sucked straight into the engine.

Has anyone noticed this?

Just speaking hypothetically, could engineers design a filter to trap soot before it reaches the intake manifold? It would be nice to change a filter every xx,000 miles instead of cleaning the intake manifold.

Wonko

IowaJetta · May 15, 2006

I stand corrected

I thought the air came straight through the intercooler radiator. I see now that the air flows from the air filter to the intercooler radiator and back through the EGR Valve.

jasonTDI · May 15, 2006

Exactly.

intake snorkel
airbox
MAF
intake pipe
turbo
turbo to intercooler pipe
intercooler
intercooler to EGR pipe
EGR
intake manifold
engine

Wonko the Sane · May 15, 2006

jasonTDI said:
Exactly.

intake snorkel
airbox
MAF
intake pipe
turbo
turbo to intercooler pipe
intercooler
intercooler to EGR pipe
EGR
intake manifold
engine

Pardon my ignorance on the EGR.
Is the EGR allowing soot or oil in the intake manifold? Could a filter be designed to help remove oil or soot before it clogs the intake?

jasonTDI · May 15, 2006

No filter can be made except for actually blocking off the system completely. Oil comes from the CCV system and past the turbo sealsthrough the intercooler and to the intake. Oil alone is not the issue. Soot mixed with the oil is the issue. The soot enters in the system from the flex pipe on the bottom of the EGR.

Fortuna Wolf · May 15, 2006

You can put a filter on the CCV to filter out oil.

Wyatt Earp · May 15, 2006

jasonTDI said:
Exactly.

intake snorkel
airbox
MAF
intake pipe
turbo
turbo to intercooler pipe
intercooler
intercooler to EGR pipe
EGR
intake manifold
engine

Jason,
To be 100% correct that isn't the turbo but the air compressor. The turbo is the part that is operated by the exhaust.

That said, is there anyway of reducing the restrictions on that system? It looks very messy adn "stuffed" in there.

jasonTDI · May 15, 2006

True, but why confuse people?!

You can get an old man intake and a FMIC to open up the system a lot.

Wyatt Earp · May 16, 2006

FMIC?

Thanks

CmdrData · May 16, 2006

Wyatt Earp said:
FMIC?

Thanks

FMIC = Front Mount Intercooler

OE setup has a SMIC (Side Mount).

moved2tdi · May 16, 2006

I want a cold air egr intake!
Just kidding

No air filter on EGR intake?

IowaJetta

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dieseldorf

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Wonko the Sane

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IowaJetta

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Fortuna Wolf

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