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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014)

VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) Discussions area for A6/MkVI (2010-2014) Golf and Golf Wagons (Jetta Sportwagon in the USA).

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Old December 17th, 2010, 08:37   #16
ToeBall
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A trick I picked up from my Cummins manual is to restrict airflow through the intercooler and radiator by about 15% when it's very cold. This does reduce efficiency slightly but it also keeps the moisture in the air charge suspended so it can't build up in the IC and cause such problems. This also lets the engine get up to and hold temp better. I used to park pointing at brick walls when sleeping in the truck in the cold so the engine could maintain temp. I'd leave it idling all night for the heat.
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Old December 17th, 2010, 08:43   #17
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Interesting. I've had a lot of intercooled gas engines over the years but never even heard of an IC collecting anything besides PCV residue. The IC and plumbing position on the VW must be magical so all the condensate ends up trapped in the bottom of the IC.

I wonder if the EGT plays a part in the collection too.
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Old December 17th, 2010, 08:47   #18
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Steeper gear ratio may have something to do with it. The new cr engines run a good bit lower rpm on the highway. Turbo is probably making a good bit of boost where an ALH would not. So the intercooler flow has a better chance of seeing its moisture content cross the saturation line and condense.
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Old December 17th, 2010, 08:49   #19
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a visual representation of where the intercooler is in relation to the EGRs and turbos for a better idea of what going on. If the dealer bocks and says you forded a river, ask to see the intake filer and if it's wet then ask him how water got in.

I think it's an issue with frosting after the temp pressure change with the turbo and intercooler working too good. A possible soultion would be blocking off the intercooler with some plastic, that'd also help warm up temps. Kinda similar to a "winter front" that you could put on when you put on your snow tires.

It's take some experimenting and adjusting to see what your intake temps would be with part if not all the intercooler blocked off.
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Old December 17th, 2010, 08:51   #20
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Quote:
Originally Posted by Ski in NC View Post
Steeper gear ratio may have something to do with it. The new cr engines run a good bit lower rpm on the highway. Turbo is probably making a good bit of boost where an ALH would not. So the intercooler flow has a better chance of seeing its moisture content cross the saturation line and condense.
It's only making boost when called for, on the highway flat ground, no headwind at 70 you're not creating anymore boost than an ALH i imagine.
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Old December 17th, 2010, 08:58   #21
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The inter-cooler for both my Subies were TMIC, not the coolest place in the engine compartment but...



^ this pic is ugly. Don't know about you but the only thing I want in my intake is nice cool fresh air. My '00 F250 7.3 can be hard to start sometimes but it is a little bigger. Looks like VW may have a design flaw. Installing a drain might fix the problem but dripping oily sludge won't make us popular with Greenpeace.
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Old December 17th, 2010, 09:02   #22
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this one's mine last Feb at 10K service
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Old December 17th, 2010, 09:07   #23
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Possible side affect of an active dpf regen?
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Old December 17th, 2010, 09:08   #24
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Anybody else ever owned a new car that you have to manage what weather conditions you drive it in....? Yup...me neither...
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Old December 17th, 2010, 09:20   #25
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Anybody else ever owned a new car that you have to manage what weather conditions you drive it in....? Yup...me neither...
Hehe. No, just aircraft. No doubt we'll have a POH checklist with 'Intercooler Heat' soon (i.e. like Carb Heat).
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Old December 17th, 2010, 09:23   #26
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I smell a recall.
You're an optimist...

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Old December 17th, 2010, 09:24   #27
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Quote:
Originally Posted by bdisco View Post
The inter-cooler for both my Subies were TMIC, not the coolest place in the engine compartment but...



^ this pic is ugly. Don't know about you but the only thing I want in my intake is nice cool fresh air. My '00 F250 7.3 can be hard to start sometimes but it is a little bigger. Looks like VW may have a design flaw. Installing a drain might fix the problem but dripping oily sludge won't make us popular with Greenpeace.
Quote:
Originally Posted by 740GLE View Post




this one's mine last Feb at 10K service
wow thats nasty!!! I dont want my engine taking in that shizz...i'm a bit disappointed to see that on a 2010 with 10k....
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Old December 17th, 2010, 09:39   #28
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Originally Posted by tcp_ip_dude View Post
Hehe. No, just aircraft. .
+1. The baby poop looking brown stuff looks like what comes out of the breather tube on my 182. I'm used to cleaning it off the hangar floor...perhaps it will end up on my garage floor at home...
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Old December 17th, 2010, 09:51   #29
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Default A Little Quick Math

OK - so I've been doing a little quick Math:

2.0L Engine

0.5L Cylinder volume

18:1 Compression Ratio

Therefore:
Volume of Cylinder @ TDC = 0.5L/18 = 27.8mL or 0.94 US fluid ounces.

IT TAKES LESS THAN ONE OUNCE OF WATER TO HYDROLOCK A CYLINDER.

Many people have reported a cup (8 ounces!!) or more of water and/or ice draining from the intercooler low spots, and my dealer described my vehicle as draining "well over a cup of water & ice." (Before writing it up as 1/3 cup on my service history - thanks alot.)

This does not give me a warm fuzzy feeling inside.
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Old December 17th, 2010, 10:05   #30
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Default Iced IC

One byproduct of combustion is water vapor.Low pressure EGR in a CRD is sent thru the inter cooler,so water condenses faster in colder weather in the IC and not so much when warmer.Also air is pumped into the crank case by the vac pump.
On my BRM 06 Jettta I have a catch can in the CC vent system it regularly fills with water, at least a cup every 2 weeks.
So far I have no issues with the IC on my 09 CRD.
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