2005 Audi A4 Coolant Leak Under Intake Manifold

11-07-201105:37 PM

So, I have a coolant leak under the intake manifold. It doesn't appear to be the mutual j-plug problem, but a crack in the plastic pipage in betwen intake runners three & 4. See pictures beneath.

Anyone have a part number? Been searching...

You can see, very clearly, the fissure at the base of the plastic.

11-07-201105:46 PM

Nope, thats your crankcase breather piping/hose.

CLICK

How to ready said hose: CLICK

Its a real bowwow....

One more thing I'll add, make SURE you club the correct i. At that place are 3 revisions of the PCV arrangement. Just check your VIN against the part. ECS has the clearest system of finding the part and so I linked to them. As well while you're replacing that you should replace the other stuff to, just to be sure. There's a lot of fragile crap continued to that that is well-nigh probable super brittle.

11-07-201106:00 PM

So, as far every bit the coolant leak, could it be that the j-plug is spraying onto the breather hose? There was some coolant effectually the j-plug, just it didn't appear to be enough to exist the source, but equally you lot tin come across, the breather hose is covered in coolant.

xi-07-201106:17 PM

yous can also use this. Itll also prevent futurity vacuum leaks. I just installed this cause my breather hose was croaky aswell.

http://world wide web.034motorsport.com/engine-...e-p-22077.html

11-07-201106:24 PM

Thank you for the info. The kit looks similar something I will probably install every bit preventative maintenance, but the real trouble here (at least, every bit far equally driveability) is the coolant leak.

11-07-201106:42 PM

Quote Originally Posted by CrazyCal View Post

Thanks for the info. The kit looks similar something I volition probably install as preventative maintenance, merely the real problem here (at least, as far as driveability) is the coolant leak.

Y'all're certain its coolant? It has that sweet smell? The coolant pipe straight in a higher place there has a bleeding/force per unit area relief screw right above there. Is there whatever corrosion on that? aside from that I suppose it could exist sprayed on there.

That looks like oil to me, which would exist completely reasonable given the size of that crack. If it is indeed coolant though, I accept to plead ignorance. Maybe someone else can chime in.

Also, +1 on the 034 kit. I would get that over OEM parts. I forgot nearly their kit...

11-07-201107:07 PM

have you had to pinnacle off your coolant?? or did you notice if your depression on it recently? if coolant is normal and yu havent touched it, then it shouldn't exist a coolant leak.

11-07-201108:39 PM

Last edited past CrazyCal; 11-07-2011 at 09:02 PM.

11-07-201108:51 PM

I want to become that breather kit, but I'm kind of dislocated by the VIN fitment stuff. There are 3 options:

upward to VIN 8E-iii-040000

VIN range 8E-3-040000 > 8E-3-500000

VIN 8E-three-500000 and up

The confusing role is the "3" in their listings. I have no 3 in my VIN. The last 6 of my vin is 2xxxxx, but there is no "3" anywhere earlier information technology like in the examples above.

What gives? Someone delight explicate.

11-07-201109:ten PM

Assistance! I wanna club these parts. lol :)

xi-07-201109:38 PM

yes the same with me. mines a 2002 AMB engine code. so it doesn't take the 3 as well.

this the exact the one I ordered. doesn't specify 2002. only its amb engine code. and fits perfect.

http://www.034motorsport.com/engine-...t-p-19986.html

you gotta 04 so I dont know.. This ane labels your yr.
http://www.034motorsport.com/engine-...e-p-22078.html

11-07-2011eleven:30 PM

Quote Originally Posted by A4.1.8turboo View Post

Yeah, 034 should really clarify that shit.

Cheers turboo for all your assistance, though. I love AZ.

11-07-201111:41 PM

Quote Originally Posted past Charles.waite View Post

Yous're sure its coolant?

x2. Coolant turns white when it dries. Yous can see spots in your pictures where in that location is dried coolant, only the breather hose itself looks similar it has oil on it.

11-08-201101:24 AM

Last edited by CrazyCal; 11-08-2011 at 02:33 AM.

eleven-08-201109:15 AM

i have to say that it looks more similar oil than coolant...

eleven-08-201109:37 AM

Quote Originally Posted by CrazyCal View Post

We volition see when i tear into it. It's pretty green and oil ain't green. Perchance a mixture of the two since the breather hose has that cleft. The leak on the ground is DEFINITELY coolant. Looks like coolant, smells similar coolant, and water consistency like coolant. Don't think the previous owner used the coolant they're supposed to. We will see...

Our coolant is pinkish, so yea it looks like the PO put in the wrong coolant. I know Porsche uses green coolant, but Audis (at to the lowest degree ours) use pink. I would go set up for a coolant flush!

And I have to concur, it still looks similar oil to me. when coolant leaks and dries on the block it gets this whitish reddish chunky consistency, kinda similar someone blew chunks on your engine, not gluey night oily like in that picture. Besides given how the PCV system works, the oil blowby vapors go through that elbow tube and condense in the oil pan and then a crevice of that size would definitely allow plenty oil vapors by to condense on that elbow (and likely all around the elbow too! yay!).

Anyway, non trying to be argumentative of course. I dealt with that exact hose being cracked a few months ago and then I know some of how the PCV organisation works now.

11-08-201109:56 AM

Quote Originally Posted by Charles.waite View Post

Our coolant is pink, then yea it looks like the PO put in the incorrect coolant. I know Porsche uses dark-green coolant, simply Audis (at least ours) employ pink. I would get ready for a coolant flush!

And I take to concord, information technology even so looks similar oil to me. when coolant leaks and dries on the block it gets this whitish reddish chunky consistency, kinda like someone blew chunks on your engine, not sticky dark oily like in that picture. Besides given how the PCV organisation works, the oil blowby vapors go through that elbow tube and condense in the oil pan so a fissure of that size would definitely allow plenty oil vapors past to condense on that elbow (and likely all around the elbow besides! yay!).

Anyway, not trying to exist argumentative of grade. I dealt with that exact hose being cracked a few months ago and so I know some of how the PCV organization works now.

true, when my rear coolant flange was leaking it was forming stalactites made of coolant residue...same shit started happening a few weeks ago with my thermostat...in both cases, the parts broke into peices when i removed them and i had to scrape the coolant hoses complimentary of the function of the thermo that bankrupt off inside of information technology...

11-08-201101:15 PM

Quote Originally Posted by Charles.waite View Post

Our coolant is pink, so yea it looks similar the PO put in the wrong coolant. I know Porsche uses dark-green coolant, but Audis (at to the lowest degree ours) employ pink. I would become set up for a coolant flush!

And I accept to concur, it nevertheless looks similar oil to me. when coolant leaks and dries on the cake information technology gets this whitish reddish chunky consistency, kinda like someone blew chunks on your engine, not gluey dark oily like in that flick. Besides given how the PCV system works, the oil blowby vapors become through that elbow tube and condense in the oil pan and then a cleft of that size would definitely allow enough oil vapors by to condense on that elbow (and likely all around the elbow besides! yay!).

Anyway, not trying to be argumentative of course. I dealt with that exact hose being cracked a few months ago and so I know some of how the PCV system works now.

No, not argumentative, just discussionary (is that even a word? lol). Like I said, nosotros will see when I actually pull off the IM. Actually kind of looking frontwards to it. Volition be my outset time digging into the 1.8T. lol Merely, to me, it looks like the oil is mixing with the j-plug coolant leak, keeping information technology from drying up and leaving that white residue.

Haven't heard back from 034 Motorsport well-nigh which kit I'g supposed to order (encounter post #9), but I can't wait. This needs to exist washed. It is my daily driver. I finally just decided to go with the Late-AMB version because it specifically lists 2004-2005 in the clarification. I'm simply going to guess that the carve up is in the 2003 model twelvemonth. Wish the website was more clear on that.

11-08-201101:27 PM

If you lot have this:

Under your IM and connected to that croaky sabbatical hose/elbow they you're late AMB. You're a 2004 and then you SHOULD exist a late AMB every bit I found out my automobile was. I was dislocated equally hell with this stuff too. I just kept reading threads and finally it started to make sense. The VIN starts Chassis Code (8E =B6/B7 A4) - Model Year (2004 will merely exist 4, 2003 is three, etc) - serial number (6 digit series). So a 2004 B6 A4 will always start 8E44xxxxxx or something like that. You can attempt out this VIN decoder and I should explain what everythign in your VIN stands for.

So the right 034 part should be THIS. I'll probably exist picking one up for my '04 soon as well.

I broke a few PCV parts a while back while replacing my Valve encompass gasket. The VC gasket should have been an easy repair, only I ended up having to dig into the PCV system as well. It was literally the first repair I ever made on whatsoever machine. It was fun, frustrating, rewarding, etc. Trial by fire definitely though! Expert luck!

eleven-08-201101:58 PM

Quote Originally Posted past Charles.waite View Post

If you have this:

Under your IM and connected to that croaky breather hose/elbow they you're tardily AMB. Y'all're a 2004 and so you SHOULD be a late AMB equally I found out my auto was. I was confused as hell with this stuff too. I just kept reading threads and finally information technology started to make sense. The VIN starts Chassis Lawmaking (8E =B6/B7 A4) - Model Year (2004 volition just be four, 2003 is three, etc) - serial number (6 digit series). So a 2004 B6 A4 will always starting time 8E44xxxxxx or something similar that. You can try out this VIN decoder and I should explicate what everythign in your VIN stands for.

So the correct 034 part should be THIS. I'll probably be picking i up for my '04 soon equally well.

I broke a few PCV parts a while back while replacing my Valve encompass gasket. The VC gasket should accept been an easy repair, merely I ended upward having to dig into the PCV system too. Information technology was literally the first repair I ever made on whatsoever auto. Information technology was fun, frustrating, rewarding, etc. Trial past fire definitely though! Good luck!

Yep. That's what it looks similar nether the manifold. Good. So, I ordered the right part. At present, if installing was as easy as ordering...

11-08-201102:eleven PM

Quote Originally Posted by CrazyCal View Post

Yeah. That'south what it looks like under the manifold. Proficient. So, I ordered the right part. Now, if installing was every bit easy as ordering...

Hah, preaching to the choir...

eleven-08-201102:57 PM

Quote Originally Posted by CrazyCal View Post

I finally just decided to go with the Late-AMB version because it specifically lists 2004-2005 in the description. I'k only going to guess that the split is in the 2003 model year. Wish the website was more than clear on that.

Exactly. 8-three-500000 and up would include:

- any 2003 cars after that split
- and 2004 cars (8E-four-******)
- and 2005 cars (8E-5-******)
- obviously the higher up would all need to be 1.8T's, but y'all get the idea

So your 2004 VIN would get-go with "8E-4", so that would put it mathematically "after" the 8-three-5000000 vin split. Indeed, your car certainly came after the 2003's on the product line likewise! The split up is basically saying "mid-2003 and up B6 one.8T'southward", but the specific numbers are there to decide what "mid" actually means in that context. In this instance, serial number 500000 of the 2003 model twelvemonth.

It looks hard, but the VIN dissever stuff is pretty simple one time you get the hang of it. Good luck with the 034 kit. That kit came out simply after I replaced my PCV stuff, otherwise I would have bought it in heartbeat.

11-08-201109:53 PM

Give thanks you lot for the explaination. Helps reaffirm what originally made sense to me. The way they had it on the 034 website was listing 04-05 with higher than 8E-3-500000. Which makes no sense considering 04s and 05s would be 8E-4 and 8E-5 respectively. Crazy. Hurt my head. lol