disappearing oil

[rich_86]

yea basically does anyone else have the same thing???? works out to be losing 1 litre per 200kms...occasional 6k+ rpm jus rebuilt head so all gaskets and valve stem seals are new and intact....distributor O-ring replaced...sump plug doesnt show any signs of leaking...no oil appears to be leaking from sump to block...yea jus wondering if anyone else had this prob and fixed it or knows of any reasons why.....engine is 4age bigport and using genuine toyota oil...thanks

[Tyrie]

Not blowing smoke? No oil in water?

[rich_86]

no oil in water....and only lil bit blowin at 5.5k rpm +

no smoke at startup

[stefan]

high rpm it does blow smoke and burns oil

i had the same problem with my smallport

[Dish]

High rpm burns oil aye..

That's where all my oil goes.

[v-tec]

My guess is its your rear main seal, youll probly pull your gearbox out strike oil.
This is the seal that is at the back of the crankshaft and between that at the flywheel
My old 4ac used to use buckets of oil, all went into the belhousing.

[Gilly]

rings

16v's are getting old now. might need a refresh

[hilton]

you need either new rings or new valve stem seals.

i noticed on the cruize that your car was blowing a fuck load of light blue/ grey smoke under acceleration.


definately what it was dude i knew as soon as i seen it.

[rich_86]

thats the thing valve stem seals were replaced 2 weeks ago wen car was off road... so thats done

compression test was done and all cylinders came between 168 and 172 psi....


the gearbox was off in october wen clutch pressure plate broke....and i had the problem back then but and wen the gearbox came out the was no oil in there at all

[Jonny Rochester]

Did you check the bore surface when the head was off? It is probably glazed smooth, and the rings are probably old and worn. Thing about doing a rebuild again, with a proper hone this time, and new rings.

[SLO-030]

No matter what a compression test says it wont tell you if the oil ring is effed..

A compression test only tells you if your compression rings and valve seats are good. The burning oil will be caused by a worn oil ring or valve stem seal.

Now that you have rebuilt the top end it will have more pressure against your already weak oil rings causing them to show signs of wear.

When the head was off piston movement and glazed bores should have been looked for.

Rebuild time

[Benno]

Ajax hone :D