1GR-FE oil passages

Anyone have a factory diagram of the oil passages on the 4.0l? I may have to pull heads and clean passages and returns out...one of those quick oil change places screwed my son while I was overseas.

 

What exactly is the issue?

 

waiting for details.....................

 

Just run a high detergent oil to clean.

 

Hmmm.... trying to clean out bearing material perhaps?

 

Sorry for the delay; was having codes pop for the #1 VVT solenoid, after I had replaced both and all the chains. Turns out the #1 unit I installed was poorly made, and wasn't porting oil properly. New one from Toyota fixed it.

The reason for wanting the oil passage diagram was an unscrupulous "mechanic" was either putting recycled oil in, or only changing the filter when my son took it in for oil changes (I work overseas). Ended up sludging the motor BAD...enough that it broke the targets off the #1 cam phaser, and I was pulling ROCKS of carbonized sludge out of the timing cover and valvetrain. A lot of $$ in parts, a lot of sweat, and a bunch of mineral spirits and labor by me, and it's now running like a champ.

 

Attaching a pdf that probably has what you are asking for around page 18.

 

Thanks for the file in a new member and the information I've been able to collect from other members has be excellent.

 

Use the cheap walmart synthetic oil and substitute one quart for ATF fluid. Should clean it right out.

 

Make sure you clean/replace those VVT screens too. Very fine mesh.

 

Atf works good or diesel in the crank case will help clean it out really well

 

Just curious, how long were you gone? Oil doesn’t just sludge up overnight.

 

......yet another part recently joining the expanding list of NLA/discontinued OEM parts for 2nd gens that I have been reporting. This is from a 2015, see the ninth part down on the NLA list near the top of the page. https://toyotaparts.bochtoyotasouth.com/v-2015-toyota-tacoma--base--4-0l-v6-gas/engine--oil-pump