3rd Gen 2017 Tacoma V6 motor question:

I think it has the classic Toyota V6 hum, which always sounded good to me.

 

That is probably the best single TW post I have read all year.

If it wasn't so comprehensive, I would make it my signature.

Thank you

 

Holy hell, is it Friday already?

 

Legendary.

You forgot one though.. 351M.

Still, the 1GR would stomp it's pansy arse.

 

I purposely purchased my 19 with the 2.7 so when I hear the engine I remember that I purchased the 2.7. This way I am not up all night wondering why my 3.5 sounds like a 2.7. Make sense?

 

Under which conditions are the port injectors used vs direct injectors? I'm asking because my OCD wants to know when fuel is washing carbon from the valves and when the direct is not. Thanks!

 

Edit: See @MOC221_ 's real info below.

 

Thank you - so to keep the valves "wet" with gas, I gotta drive it harder, which is probably smart, especially near the end of a trip.

 

You're welcome.

Not really. From what I read, the intake valve issues didn't crop up for many thousands of miles on the DI motors with problems. Normal driving with our system will do just fine since you are likely to get into Otto pulling away from most any stop or climbing a grade.

If the MPI is doing its job, there will be no wetness on the valves except maybe at a cold start. With a hot motor, even less so.

Just a note, our Forester XT with the first model year DI is doing really well at around 45k now. And my wife usually drives that thing like granny.

 

I just want to add to what @tonered said about this...

I've driven around quite a bit with my laptop hooked up to my truck, monitoring/logging 20+ PIDs with Techstream (I test things for OVtune).

The truck is actually using port injection a lot of the time from what I've seen, or port + direct. The only time I'm seeing direct only is for high load/RPM, or when the direct injectors are doing their cleaning routine (hot idle). Normal (hot) idle is definitely port injection only, I remember seeing that.

As has been stated, you're fine.. I don't think you'll need to change your driving habits at all.

Edited: @tonered :

Just ran an errand and decided to monitor with Techstream again to be sure of how I remembered this. Injection mode PID has three states - Port, Either, and Direct.
Most of the time you're running in "Direct" or "Either". The only time I saw "Port" come up was when I lifted or was at hot idle (not in cleaning mode). Injection mode was in "Either" only under certain circumstances, such as light throttle highway cruising or lower speed/low rpm driving. One thing is for sure - adding any significant load with the throttle immediately results in direct injection. You'll also get direct when at part throttle once the rpm rises beyond a certain point.

 

Oof! Thanks for the correction.

 

Okay. Given the shit-post creep going on. I vote that once a dumpster fire starts to kindle, these threads get all merged up through the weekend, then just start over for the next week?

Just sayin':
https://www.tacomaworld.com/threads/random-noises.581973/

Gawd, I'm starting to sound like @skiploder .

 

Gawd, I'm sloooow. It took me this long to think of the obvious question. I didn't know you were doing that much logging.

So, say you're in 2nd gear at about 1/8 to 1/4 throttle then smoothly and quickly go to about 3/4 throttle. What is going on that causes the stumble and surge just after that? Pre-TSB, I would have called it bucking. Now, it is just a bit of a nuisance.

Thanks!

 

Just my opinion, but dumpster fires work best when they happen spontaneously.

I think sooner or later the mods are just going to get fed up, pack it in and sell this forum for a handsome sum to some data mining firm ....lol

 

Oh yeah. The fire has to start before for the merge. But, just think of the fun trying to figure out WTF is going on after a few get merged together.

I'm just thinking that the forum would be a bit more concise?

That is not funny! I like it here.

 

First, I edited my previous post to correct/clarify some things!

As far as your question, I don't know TBH. I was reading that 2GR-FKS "New features" PDF last night, and one of the things the Toyota tune does on purpose is retard ignition timing upon sudden increase in load (ie when you stomp on it). I also know that VVT plays a role in surging and/or stuttering, as OVtune was able to tune out a symptom on my truck - it couldn't make up it's mind between Atkinson/Otto within a certain RPM/load range.

 

Good stuff. I need to cozy up to that whole document but was watching football last night. I tried finding the one about the transmission today but couldn't find it. I remember reading it, but stupidly didn't save it.

It reminds me of the fuzzy logic that was discussed about the HS Priuss.

I'm decent when considering a variable or two together. Tossing ignition timing in with DI / MPI, VVTi / VVTiW, simulated Atkinson / Otto, and electronic throttles just equals this for me. And, the variable intake path gets mixed in there also!

I do like this motor and pure DI in every other one that I have driven. It's just so complex here. Next up: variable compression here also.

 

This subforum will gradually mindfuck you if you're not careful.

 

Consider me fucked. . .

 

Yeah, me too.

Lots of good information and good natured kidding around.

Most of us have lives outside TW, some don't, it appears...