2TR-FE oil consumption issues

I'm looking to hear about oil consumption issues between oil changes with 05-15 trucks. I'm talking chronic oil usage with no visible leaks or indications of oil entering the combustion chambers. I'm looking to hear about if solutions were found so far my search shows me a couple who just added more oil and sold their truck or at the other end of the spectrum BabyTaco did a rebuild with I believe bad rings on cyl 4. Any insights into this issue are helpful

 

I just read through the other (old) thread where you chimed in on this issue. Yes it could be a valve stem/stem seal, but also oil burning or "consumption" can be caused by a stuck ring(s). So contrary to to others advice, I believe a compression check *might* help. If this is the problem, some common solutions are engine flushes, fuel detergent additives and oil detergents to clean the ring pack and free any stuck rings.

 

It's not the rings. 160 across the board, I now believe it to be an oil control ring, it gets stuck open and allows the oil to basically drain out in a short amount of time but then closes an operates normally so the plugs don't get fouled and there's no smoke. this is an issue on other Toyota 4cyl engines they even issued an enhanced service campaign on them. However the 2trfe is not apart of that campaign and to fix the issue would require a full rebuild. It's cheaper to find a complete engine and drop it in and hope it doesn't happen again but chances are this will affect most 2trfe engines as they age. From my investigation on my engine there doesn't appear to be any real damage so I'll fill everything back up and monitor it closely, and decide what to do because based on how I use the truck I can't have en engine that randomly decides to dump oil 500km in the bush with no help available.

 

Shouldn't be hard to find at a wrecker, they still use it in new Taco models I believe

 

Could it be a PCV issue? You could inspect the intake after where the PCV line comes in and see if its more than normal.

The new ones are VVTI on intake and exhaust so I'd think it would be a little complicated sorting that out.

 

It's still a crap shoot, whether or not Toyota addressed the issue or just pretend it's not happening like they did at first with the 2az, I've even found a report of a local guy having the same issues with a 6cyl he solved it by replacing the engine

 

My earlier assumption that it wasn't the rings is incorrect I was basing it on the compression test because it's an intermittent problem with the rings not enough oil passes by to cause smoking or any other signs it may eventually as it gets worse but this is the beginning of the end for this engine. I'm pretty sure she's gonna go the way of @BabyTaco and I feel like there's a few dozen trucks here that will go the same route, if you have this issue have it confirmed and report it to Toyota it's too late for my truck I have too many miles on it even if they issued a tsb I wouldn't qualify. The price I pay for using my truck I suppose

 

You said “chronic oil usage” but haven’t said how much it’s using. All engines will consume some oil. How bad is yours if you think it’s a problem?

 

With mine it started with 1L every 8000km this has slowly increased over time, at first I was of your opinion it's just oil breaking down. now it's up to 4.4L in less than 8000km (7000 to be exact) most recently I was able to hear the valve trail clacking away on the freeway shutting off the engine instantly i added oil till full it took 4.4 L it's never smoked, never leaked, I didn't find any shavings in the oil or the filter, there's nothing in the coolant or the PCV system. It exhibits all the symptoms of the 2AZFE which had a tsb issues for new rings and pistons.

 

If he pulls it from a wrecker just get the harness and ECU also.

 

I sure as shit wouldn't rebuild this because low mileage used ones are cheap and plenty and it's less work

 

Also if I pull another 2tfe it's bolt in. I don't need anything but the long block as my truck has all the parts. If I were to switch engine platforms yes I would need the harness

 

As stated by SnowB0und, the updated 2TR-FE has cam phasing on the intake and exhaust, where your 2nd gen only has exhaust cam phasing. So I'm thinking the ECU *may* be different... obviously I am not sure but it's worth checking.

 

I wouldn't be pulling a 2tr from a 2016+ as they're going to be very few in a wrecker locally and they'll want a premium for them. The 4cyl is exceptionally rare here I've only ever come across a hand full, I'd look to get one from an 05-15 if and i mean if I stay with the 4cyl platform. My current thinking is that based on the amount of guys here having a ring issue This will affect all or most 2trfe engines from at least 05-15. Which to me makes the 4cyl a non reliable platform

 

You're manual, right? Should be a bunch of other engines that mate easily to the r series trans you have

 

It's what I'm looking into right now. I'm actually trying to find the guy that did the V8 swap in is 4cyl just out of curiosity, but I'm looking at a bunch of options, it's gonna have to be an engine that lasts the long haul to justify the cost

 

I would strongly advise keeping it simple and attempting the cheap fix of PCV valve before assuming the worse and digging into oil control rings or valve stem seals.

Though Toyota has a long history with crap oil control rings, a PCV valve is easier to access. Try it first and report back.

 

It's already off and been looked into. Also got a good look at the pistons it all fits and makes sense the more I chew on the results of yesterday's deconstruction.

 

So your burning a quart every 1k miles? That’s considered normal by most vehicle manufacturers. Especially turbo European cars. If that’s it just add a quart every other fill up and don’t worry about it.

 

Re read what I posted it's now consiming 4.4 liters per 7000 km