Alright, I had replaced my coolant hoses awhile ago on the turbo side. I can smell coolant and see my engine bay smoke from the coolant dripping onto the y pipe and other various parts on this side. I am not losing very much coolant at all, yet it seems under hard accleration i see this happening. I inspected the hoses again and they seem fine. They are still fine no leaks in them. Could it possibly be just not a tight fit on the primary #1 turbo coolant line coming from up top? Or could it possibly be a different hose that is leaking? I couldnt seem to find anything over that way that it might be im stumped??

Any suggestions or advice are appreciated

 

hard line crush washers ok?

 

i got the same problems about 2 years ago, see if you got coolant close to the primary fuel rail on top of the engine, betwen the LIM and the engine, some FD has freze plugs some dont, press the main coolant hose with the engine off and hear some coolat coming in-out noise, and trace the leak, hope this works

 

if coolant is comiing from betwen the LIM and engine, replace the o-rings

 

well i just had a rebuilt done at around 73000 miles. so im pretty sure its not the coolant seal...

its coming onto the y pipe pretty bad and leaking underneath its not coolant hoses to the turbos...its coming more by the turbos

The hard line your talking about would this be the one that has the top coolant hose feeding into with it seperating splitting into two?

 

thats the one... sometimes those hard lines corrode at the washers which causes a leak.
it'd come stright from the top of your turbos... bit hard to get to, but can be fixed.

there is another hard line below your turbos that goes to the lower coolant hose too if i remember correctly, that one's a bitch to get to.

 

hmmm ill have to look but i dunno if its the problem im gonna go grab a some jacks and raise it up some and take a look from the belly...see if i can follow the drainage of where its started...ill inspect that hard pipe and see whats going on as well..

 

well it wasnt the hard lines at all and i couldnt pin point anything under the car at all only saw a few drops around by the oil pain and by the tca ...

anyone else have any suggestions? this is very odd, maybe ill just pull the uim manifold tomorrow and see whats going on around there.

 

close to the firewall and the engine you can inspect a little with a flashlight

 

took off the uim manifold and cannot see any coolant in that area at all? i do have white smoke when i start it up but i cant tell if thats because its cold out or what? When i drive the car hard its very present that you can smell coolant and see it burning under the hood somewhere? anyone have any other ideas as to what could be the problem?

could there be too much coolant in the system and having it squirt out and get onto something?

is there a DIY way to check the pressure of the coolant? i can squeeze the main line from the filler neck but cannot hear anything dripping or coming out anywhere?

Im stumped....

 

DIY? yeah pressurize the system with a pressure tester of some sort.
you haven't got too much coolant in the system, that'd overflow in the AST and run back into the overflow tank... so thats a no go.

around the engine you have:

2x turbo coolant hoses (you changed both top and bottom right?)
1x coolant hose that runs up and over the front of the engine block (attaches to the front of the rats next)
1x heater core hose
2x coolant metering lines, one on top of each rotor housing
2x coolant lines to the throttle body (one on bottom, one in the firewall side)

have i missed any?!
maybe a loose thermosensor leaking it out behind the waterpump? waterpump gasket? thermostat housing gasket?

by the way, the concern with hardlines isn't often the lines themselves, it is the washers and the sealing there with corrosion.

 

no i didnt replace both top and bottom just top...but i inspected the bottom and can see no coolant coming from it at all or any bubbles like its about to give... im taking it off later tomorrow since its cold and its on there hard...im pretty sure its not the problem i dont see any coolant coming from that area..

im going to inspect further tomorrow down in the rats nest and see if its from there i know its coming from the passenger side...not the driver...

i guess morning will tell

 

tell ya what... i replaced and checked everything looking for a coolant leak around the top of the turbos... turned out it was the lower turbo coolant hose that was just routing the steam up through the channel to make it look like the top hose.

change that lower one, almost guarantee that'll get it.

 

alright morning will have to come early because im tired lol and its dark out and fing cold lol.. ill let you know how everything works...then its time to figure out if my Fpd is leaking or the injectors lol if so im just gonna reroute something to eliminate the Fpd...

 

you and me both buddy, fuel smell under boost is me!

 

All it takes is a pin hole isze leak. It will spray onto other areas and appear to be comming from an area that the leak it self isn't in. I've had it happen on two seperate occassions where one leake was in the little hose that ran from the top of the engine (in front) to the water pump housing IIRC and the other was on the lower turbo hose. The one on the top of the engine was spraying back towards the TB and UIM getting all over the insulation under the hood and dripping everywhere and causing the steam, and you could never catch it doing the spraying. I found that one with the engine cold and using a system pressure tester. Same with the lower turbo, couldn't ever catch it spraying but it looked like the upper turbo hose or that area. Pressure tester agin. Hope you find it. Jack

 

alright well morning proved nothing im gonna see if i can get some pictures up here and have you guys see whats you think...im taking off the lower turbo hose..and gonna replace that...

would a compressor work fine for a pressure tester? i can limit it to a certain psi possible 30psi or would that be too high?

 

it is ideally around 22.7psi or something for testing the coolant system... 30 could be heavy duty.

odds on with these leaks, you're not going to be able to see them visually... as the engine heats up the hose expands and pin-hole leaks can start. when the engine cools again the hose contracts and you'd never see them.

 

well i tested the lower turbo hose by taking it off and actually putting more psi than needed with no leaks no pinholes or anything...im going to replace it anyways just because...i cant find my camera but the hard line over towards the firewall the one that goes from left to right seems it might have a leak at one of the nuts but the leak starts higher from there bc i see it dripping down...

this is harder than wheres waldo

 

haha, sure is... if you put a coolant flush in it should theoretically expose any holes as well.

 

alright im gonna put the car back together with the new line for the lower turbo hook everything back up and then put some dye in the radiator fluid, run it a little bit enough to see the dye come out onto the hose...hopefully this works...

i will let everyone know tomorrow

 

keep in mind when coolant evaporates the gummy stuff that's left is flammable. may want to rinse things off (when cold) if anything is in the turbo area.

t

 

There is a hose that connects to a hardpipe in front of the UIM (behind the alternator) that will leak and coolant will run over to the turbos and smoke. It will also spray coolant onto the y-pipe depending on where the hole is. See the pic below:

 

ill keep that in mind im going to go pick up some hoses to replace both turbos because i dunno if i put a slight rip in it when i took it off but i found one there...im going to dye check everything...ill make sure to double check the one by the alternator...thanks for the help off to the store now