1990 dsm burning coolant can not find where its burning need ideas

[98gstbrad]

Okay so I can't find out where this coolant is going my engine is burning coolant now but the head gasket is brand new, I had the head pressure checked to make sure it had no hairline cracks, turbo has no shaft play and the coolant is still getting burnt somehow... Could it be because i still have the egr on the car? And the vehicle this is on is a 1990 talon tsi awd that's all stock i need ideas on why this is happening and i need to know ways to test for your hypothesis.

 

[92AWDHX40]

Do another compression ,leak down test, still could be leaking coolant from a bad hg job.

 

[Colt4G63 also]

Have you tried pressure testing the cooling system?

 

[BogusSVO]

Ok you say new HG, was the head checked for warp? Was is surfaced? If so How?

Do a coolant system pressure test

http://www.dsmtuners.com/forums/art...440201-10-coolant-system-pressure-tester.html

Or a leak down test with the rad cap off.

 

[98gstbrad]

Everybody keeps saying leak down test what is that? No its not a bad head gasket job, brand new head gasket was put on by a professional technician. Also its not leaking its burning seeing as all cooling components are brand new so I do not see what a pressure test would do. if you can enlighten me on the purpose of that test.

 

[Colt4G63 also]

Everybody keeps saying leak down test what is that? No its not a bad head gasket job, brand new head gasket was put on by a professional technician. Also its not leaking its burning seeing as all cooling components are brand new so I do not see what a pressure test would do. if you can enlighten me on the purpose of that test.

A pressure test is the first thing a professional technician does to the car when a customer comes in complaining about losing coolant. You pressurize the cooling system, and see where it's leaking. Unless you presume it's burning inside the sealed cooling system.

EDIT: During this pressure test, don't forget to pull out the spark plugs and check inside the cylinders, and don't forget to check less obviuos possibilities like an internal leak from the fast idle air valve in the throttle body, or a cracked turbo center cartidge, or cracked cylinder wall. When you're done, make sure the oil isn't full of coolant.

 

[98gstbrad]

I did a pressure test on my cooling system and no external leaks anywhere, but the system still leaked out the pressure. So I did a block test on the cooling system and it showed that there are exhaust gasses inside my cooling system. In other words I have an internal leak now I am trying to find out if it is from my turbo leaking or my head being cracked. Way I see it if it was in my head it should show on my plugs but the plugs came out looking just as they should besides the fact that they were a little rich. So now how can I make sure it is my turbo leaking the coolant before I go about pulling it off? Also I can not seem to figure out how to loop the cooling lines for the turbo seeing as one uses a hose and the other has a flared fitting on the end... any ideas on this?

 

[Cj'srs]

Take the rad cap off abd see if it flows

 

[98gstbrad]

It flows like a champ it has a brand new water pump.

 

[ramsack]

Just because it has a new head gasket "done by a professional" doesn't mean it couldn't be a faulty part or a faulty job. You have exhaust gas in your coolant. The head gasket was recently changed. It would be the first point of failure and the first thing I would be looking at.

 

[LOLZFWD]

cracked head inbetween valves....orrr bad turbo....start there.

 

[wrencher]

If your car failed the "block test" it's more than likely the head/block/headgasket.
That tester checks for the presence of CO in the cooling system.
Not that a normal turbo would expose the cooling system to exhaust gas, but more unlikely without some other issues if the turbo where to be at fault. (external leakage smoking exhaust etc)

Have you pulled the plugs & see if you have an exceptionally clean cylinder compaired to the others?
Or pressure test the cooling system with the pugs out/engine cold?

I have been working on cars professionally for 25 years.
A few lessons from experience is new doesn't always mean good.
Mistakes can & do happen, either by the tech doing the install or the machine shop in this case.
Trust me I have seen some strange things over the years even though you wouldn't think it possible, but $#!^ happens.