Coolant in Oil (12 Viewers)

[dcarcagno]

Hey,
Recently bought an lx470 and it’s blowing white smoke. Smells like coolant in oil and oil is a tiny bit milky. I did a block test for head gasket failure and it passed fine. No bubbling in coolant and fluid didn’t change color. The smell is terrible from the exhaust. I got it super cheap knowing it was possibly a hg failure according to old owner but now I’m not sure. Could it be the oil cooler? It had a new radiator, heater core, and thermostat all done in the last few years. Just not sure where I should start for diagnosis. I’m not driving it so I can disassemble as needed.

 

[Trunk Monkey]

What block test did you do? Just the coolant dye? I'd do a leak down if you're able.

 

[dcarcagno]

What block test did you do? Just the coolant dye? I'd do a leak down if you're able.

Yeah just the dye. I’ll do a leak down as well.

 

[dcarcagno]

I also just did a compression test. I was by myself so I’m not sure if the reading dropped at all while I ran to look but I looked them all and they were all between 160-170psi. In the fsm the range is 142-192+.

 

[andrewderrick]

Is the p/s level dropping? What if it’s not coolant but ps fluid getting sucked into intake from the idle up valve?

Change engine oil/filter
Replace idle up valve

Monitor coolant and oil levels and re check

 

[dcarcagno]

Is the p/s level dropping? What if it’s not coolant but ps fluid getting sucked into intake from the idle up valve?

Change engine oil/filter
Replace idle up valve

Monitor coolant and oil levels and re check

Are you talking about the idle air control valve?

 

[dcarcagno]

I tried a leak down test towards the end of my day. For some reason the air was seemingly coming out of the spark plug hole still. Not sure I’m doing it right. Haha

 

[DuckLN]

Did the engine get hot before this happened?

 

[dcarcagno]

Did the engine get hot before this happened?

Not to my knowledge. I bought it recently.

 

[andrewderrick]

100 Series Power Steering air control valve assembly

Due to its plastic construction, the air control valve for the power steering system on the 2UZ-FE is known to break over time. An OEM replacement is the best way to ensure proper function of the power steering system. Kit includes: OEM Valve Assembly, Air Control: 17630-16040

www.cruiserpatch.com

 

[andrewderrick]

You’ll end up with power steering fluid in the intake and the car will smoke

 

[dcarcagno]

You’ll end up with power steering fluid in the intake and the car will smoke

Got it. Thanks so much. I’ll take a look

 

[dcarcagno]

Just a thought, the intake manifold, thermostat and valve cover gaskets were recently done. With the leak appearing after the valve cover and intake manifold. Do you think the gaskets are leaking into the engine? I’m going to start taking it apart this week hopefully but everything is pointing to it not being head gaskets but something else.

 

[seanz0rz]

Oil cooler may be a source as well.

 

[dcarcagno]

Pulled the intake manifold and thermostat/water inlet off. There’s a bunch of gross buildup in the water inlet. Looks like the gasket failed?

 

[dcarcagno]

Taking the valve covers off now, the bolts are finger tight at best…

 

[Trapper50cal]

I keep checking back on this thread with hope and trepidation. I'm praying it's not head gaskets and hoping to hear good news.

 

[dcarcagno]

 

[dcarcagno]

Anyone have experience with stone head gasket kits? Theres a few hundred dollar difference between that and OEM kit. Also, any tips for getting some of the buildup out of the coolant passages?

 

[excessive]

if you're going to the trouble of replacing head gaskets, do you really want to risk anything non-OEM for such a big job?