Highboy
$100 Site Donor 2025
104k miles. Put a new set of plugs in also. Picked up car used with 31k miles on it.
08 Scion tC under valve cover pics
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104k miles. Put a new set of plugs in also. Picked up car used with 31k miles on it.
You can't post pics like this without telling us what oil and OCI you've been running for the last 70k.
Highboy
$100 Site Donor 2025
I used a bunch of oils since it’s one of those oil users. All synthetic 5 to 6k at first, then ran a fram ultra oil filter and since I was adding oil so much, I went to 10k.
Highboy
$100 Site Donor 2025
2.4L. Close to 2 quarts during a 5k run. There are tons of info on this years engine. My 06 Tc has 127k and never uses oil.
Did you determine if the oil is going past the rings or the valve seals ?
Do not forget to check the PCV system .
What was the reason you pulled the valve cover ? Looks pretty clean .
Best of luck with it .
Do not forget to check the PCV system .
What was the reason you pulled the valve cover ? Looks pretty clean .
Best of luck with it .
You should see if you can get Toyota to rebuild
Looks good
Impressive
Highboy
$100 Site Donor 2025
Pulled the cover to change the gasket. PCV was changed recently. I’m guessing rings, since it’s the year they where having problems with oil consumption.
When combustion gases are blowing past the rings you will usually find carbon/black crud in the pleats of the oil filter. Might be worth a look.
Originally Posted By: Highboy
Pulled the cover to change the gasket. PCV was changed recently. I’m guessing rings, since it’s the year they where having problems with oil consumption.
Yep. I would maybe try a piston soak but I'll bet that will do nothing.
Clean as a whistle, not the original owner. Very nice.
Pulled the cover to change the gasket. PCV was changed recently. I’m guessing rings, since it’s the year they where having problems with oil consumption.
Yep. I would maybe try a piston soak but I'll bet that will do nothing.
Clean as a whistle, not the original owner. Very nice.
Do a compression test on it , both wet and dry . This will give you a good idea if it is rings or valve seals .
Originally Posted By: WyrTwister
Do a compression test on it , both wet and dry . This will give you a good idea if it is rings or valve seals .
It's the rings, Toyota was re-ringing these under extended warranty.
A BITOGer was buying one of these and then was surprised by the oil consumption, it could have even been the OP. I am not sure if he got it fixed by Toyota, but I am almost certain someone on this board has.
It's a known problem caused by the oil squirters in the pistons getting sludged IIRC. I will bet that is why this engine is so clean, because the PO and the OP changed the oil often to try to avoid this problem.
Do a compression test on it , both wet and dry . This will give you a good idea if it is rings or valve seals .
It's the rings, Toyota was re-ringing these under extended warranty.
A BITOGer was buying one of these and then was surprised by the oil consumption, it could have even been the OP. I am not sure if he got it fixed by Toyota, but I am almost certain someone on this board has.
It's a known problem caused by the oil squirters in the pistons getting sludged IIRC. I will bet that is why this engine is so clean, because the PO and the OP changed the oil often to try to avoid this problem.
These engines have defective piston rings, causing excessive oil consumption if I remember right.
Did you reuse the valve cover gasket? Just curious I have one of those oil burners too.
Back when I was a young pup , 1 quart every 1000 miles was considered no big deal .
Expectations have changed .
Expectations have changed .
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