White Smoke from yaris D-4D

[mba788]

Hi I am new to this forum,
I have a 2004 Yaris D-4D with 109k on the clock. There is oil in the exhaust which is causing white smoke. There is no oil or water leak from anywhere within the car. I took it to one mechanic he said it could be piston ring. Any ideas anyone? The car runs perfectly.
Thankyou for your help
Billy

[jorizk]

Have you ever had any overheating issue? If not it can be caused by the piston ring..

[Tamago]

white smoke is caused by water.

you have a blown head gasket. check your oil, see if there's any creamy substance under the oil cap itself

[Yaris Hilton]

Oil smoke is bluish white. The two usual suspects for that are worn rings or valve seals.

A blown head gasket will pressurize the cooling system, pushing coolant out the overflow and making bubbles in the tank.

[jambo101]

Are we talking a continuous cloud of white smoke or just a hint of blueish smoke on startup and deceleration? If its the white smoke when you change the head gasket dont forget to change the oil and filter before you start the car because your oil will be contaminated with coolant/anti freeze,not good for engine lubrication,and of course the engine cooling system will have to be flushed and refilled with fresh 50/50 coolant.

[toyota]

white smoke is caused by water.

you have a blown head gasket. check your oil, see if there's any creamy substance under the oil cap itself

yeah, that is true, i blew a head gasket
in my civic, get it checked out ASAP...

[yaris-me]

Is it white smoke or steam from the exhaust? Pull the spark plugs. If any of them are fouled with black carbon and oil then that cylinder has bad rings or valve seals.

[mba788]

It's not the head gasket there is no white emulsion under oil cap. There is back pressure from the oil cap. When I change gears there is white smoke coming, n when I accelerate heavy with high revs theres plenty of white smoke continuous at times, but sometimes it's perfect :confused:
thanks

[silver_echo]

do both a compression and a leak-down test... that smoking issue says problem to me... once you know which cylinder is not working for pressure, find access to a boroscope to look at your pistons and valves... this way you can see if it is the rings or valves without tearing the motor down... only reason that i recommend doing it this way is because if you take it to a shop and they tear it down to check it, you are pretty much committed to the repair because of the fact that they already have it torn down...

[Yaris Hilton]

I kinda overlooked that this is a diesel. White smoke will come from a diesel when the fuel doesn't ignite in a cylinder. Often that is the result of a compression loss, like a valve that's not sealing properly. You should be able to feel and hear roughness in the engine if there's misfiring, and that white smoke has a strong kerosene-like smell from unburned fuel.

[silver_echo]

well i missed the diesel part too... but i guess the compression test would help on diesel as well...

[severous01]

well if you wanna do i t yourself it's cheap and easy.

get a compression tester from autozone. 20 bux for the cheapo, and about 50 for the stainless lined one that's about snap-on quality. any way, pull all plugs and disable injectors. install compression tester, start engine and mark the first puff and the 4th puff. should be about 40+ and 100+ and all 4 cylinders should be close to equal...w/in 10%.

ok....i missed the diesel part. but you still have diesel compression testers out there u just gotta remove the injector, not the spark plug.......cuz there are no plugs.

[Yaris Hilton]

It's a Diesel. No spark plugs, It'll take a special gauge to check compression.

[ibizagti]

The problem, probably, is the turbo.

I have heard more problems with turbo in 1.4 D4D engine.


Regards.

[Yaris Hilton]

Hmmm, leaky oil seal in the turbo is a possibility.

I'm thinking this might ought to go to a good Diesel mechanic.

[06silveryaris]

if the exhaust is oily and compeshion is good my guess would be the turbo

[jambo101]

The only fluid that will produce a cloud of white smoke from your car is water in the combustion chamber and the only way it can get there is a broken head gasket or a cracked head unit.

[Yaris Hilton]

That's simply not so about water being the only thing that makes white smoke.

[jambo101]

Oil would be bluish,unburned fuel would be black,water would be white,i cant think of anything else that would burn white unless you are referring to copious clouds of strange smelling smoke coming out of the cabin:wink:

[Yaris Hilton]

Oil smoke is bluish white, and people like you and me who are familiar with it would notice that. Not everyone would, and some would just call it "white." You'll note that I referred to the bluish white oil smoke in my first post. But as I also posted, unburned Diesel fuel comes out just plain white. Hang around a trucking company or truck stop a while and you'll see white smoke from the stacks of trucks with intact head gaskets.

[severous01]

ok, here's the list....of smokes and color for everyone to know and read and deal with


black: fuel, either unburnt or half burnt. or rich from bad cat during accel.

blue or blue tinted: oil, either in the combustion chamber or leaking onto headers/catalytic converter

white: water. coolant will have a tinge of smell to it. if you wipe the tailpipe and smell it it will smell sweet and will still smell like clean coolant.

now, there is a possibility of white and blue together to make white....and you wont be able to tell if it's blue or not. so...that's usually a busted head or head gasket tho.



another thing that noone's thinking about is coolant in the turbo. newer diesels have it so u may too...check it.

[slvryaris]

I work on diesels in truck and I am not sure about the D4D Yaris but it could be a semi clogged injector. Previous fuel left in the cylinder bore could cause it. Run some diesel injector cleaner through it. A piston ring I would say would leave a black cloud due to oil seeping into the bore.

[mba788]

Thanks
I filled the level of the engine oil. I checked it after driving for about 20 mins it was back low again. The engine oil is basicall leaking through into the exhaust system and burning causing white smoke. Could be the turbocharger itself but there is no power loss at all.
thanks

[Yaris Hilton]

Turbocharger oil seal seems a likely culprit. It's a job for a professional now.