White smoke and mods

[cyclone]

Who's Brody grrrrrrrrr

Sorry fn auto correct.

[ds3juice]

ok,

I disassembled and tested some parts.

1) Disassembled the pipe going from the Turbo to the intercooler. It was installed just 400 miles ago (engine rebuild) and was super clean. Now it's full of oil. (see the pics)




2) I did a cylinders compression test. #1: 125 - #2: 80 - #3: 125 - #4: 80 - What could be the reason? Pistons are new wossner pistons. Cylinders have been checked carefully for clearences and they were all ok.

#1 #2 #3 #4


Any idea or advice is really appreciated


also: how much power can the stock rods handle?

thanks!

[cyclone]

Will assume doing test right. Was that test dry? Do it again after squirting a bit of oil into the cylinder. Does it get better? No-look at valves, Yes- look at piston rings. Or it could still be a head gasket.

[Broda]

Something is pressurising the oil system as I said before it could be HGF, cracked Block or cylinder head damage

(Stupid thing to ask but are the valves actually shutting properly?)

Cyclone is right! Mwah

[JackRav]

Sure it isn't just condensation? A by-product of combustion is actually water... When idling, you will notice it more as its not forcing loads of exhaust fumes out the car. You dont have the catalyst anymore so it will steam a bit more than before as the catalyst isn't there to convert it or warm up quicker so it comes out colourless. It will also smell a bit funky too afterward a decat. If you put your hand in it (might be hot!!) but if its burning antifreeze it will feel greasy and the water that collects in your hand feels oily. If its just water... it will be like water.

[Jamie@SPTuning]

If your PCV is still capped, then un cap it. Also make sure that on idle that there is vacuum inside cam cover, if you have pressure then the PCV system is blocked/broken. Check by slowly removing oil filler cap, it should want to suck the cap back in.

[ds3juice]

If your PCV is still capped, then un cap it. Also make sure that on idle that there is vacuum inside cam cover, if you have pressure then the PCV system is blocked/broken. Check by slowly removing oil filler cap, it should want to suck the cap back in.

This is very interesting. Actually at idle if I slowly open the oilcap it's not sacked back in but it's spitted out...

What should I check?

[ds3juice]

If your PCV is still capped, then un cap it. Also make sure that on idle that there is vacuum inside cam cover, if you have pressure then the PCV system is blocked/broken. Check by slowly removing oil filler cap, it should want to suck the cap back in.

When you talk about the PCV you refer to the pipe that goes from the valve cover to the rear part of the intake manifold right? In that case I removed that one and capped both the sides.
Then yesterday just for testing purposes I removed the cap from the valve cover one.

When you say that it could be blocked or broken to what are you referring to? What should I check for failure or for being blocked?
Thanks!

[ds3juice]

Ok i am at the shop now. Starting to disassemble to find the problem. We opened all the pcv lines and vented to air but still nothing. Then we started inspecting the turbo. On the exhaust side there IS oil. Too much to be normal. But turbo is new. Now we are checking if the oil drain pipe of the turbo is open or clogged. If the pipe us clogged it could explain why the exhaust wheel of the turbo us full of oil. The turbo itself is brand new. But some pressure in the assy could cause it. Any input?

[cyclone]

blocking the pvc either with caps or because its broken will cause an over pressurization of the crankcase (why the oil cap was "spitting out"). This pressure can cause the turbos seals to leak as there not designed to to take the pressure.

When replacing a turbo it is good practice, and mandatory with some cars, to replace the oil line as well.

[ds3juice]

Ok we went through more teating

1) removed the intake Intercooler pipe after the turbo to make sure the turbo intake was not the problem and also that maybe the Intercooler itself for some reason could have been full of oil and started the engine. SAME PEBBLEM. A LOT OF WHITE SMOKE.

2) Removed ALSO the downpipe (maybe the exhaust was fill of oil?). Same problem. A lot of white smoke coming directly from the turbo.

3) removed the turbo and started the engine without it (huge noise and back fires hahaha) NO SMOKE AT ALL.

4) Inspected the turbo (it was new) and we find oil on the turbine side. Over the blades.

5) I went to a friend shop and "borrowed" another BRAND NEW turbo. Installed. SAME PROBLEM! A LOT OF WHITE SMOKE.

6) removed the turbo. Again oil on the exhaust blades.

Any suggestion?

[cyclone]

Go see a mechanic. Or a better one. internet troubleshooting sucks.

[Broda]

I still stick to what I said previously

I agree with Cyclone

[ds3juice]

Go see a mechanic. Or a better one. internet troubleshooting sucks.

Actually I am working with a mechanic. Just we are going step by step and I also post here to update (this could help other users) and ask for suggestions.

Now we know the problem is on the turbine side of the turbo. But the turbo itself is not the problem. Next step is to check the drain pipe and measure the crankcase vacuum / pressure.

The problem is sitting in the turbine exhaust side seals leaking. But why? This happen also with a new turbo.

I think we are close to the solution. We also left all the pcv pipes venting to open air and left also the oil cap open. But still the same problem.

I hope we will find the drain pipe clogged. Cause by Logic now that's the only solution. Or not?

[ds3juice]

I still stick to what I said previously

I agree with Cyclone

Actually it can't be the HG cause we turned on the engine without the turbo installed (removed completely) leaving the exhaust manifold without turbo and there was no smoke at all.
Engine was super clean. So the HG is ok