P0011, p0016, misfire after head gasket

Dang buddy I feel for you these two ZZ Atkinson's are really something I just kind of gave up on my two It was just taking up too much time it'll be interesting to see what you find I didn't really see anything much to do with timing chain or the cam phasers.

 

How do you know the marks are dead on if you have the timing chain cover on?

Is there any chance the chain could have jumped a sprocket when you were releasing the chain tensioner? Did you properly release the tensioner? Or, could a cam have rotated when you had the cam carrier off?

From a cursory check, those codes appear timing related so if it were me I'd probably be pulling the timing chain cover and re-checking everything.

 

You can see the marks at the two camshaft sprockets just by having the valve cover off.

Removing the crank 'pulley' (harmonic damper) after lining it up at 0°, and peeking in past the oil seal, you can just manage to see the edge of the painted link next to the timing dot there.

 

I see, I guess the question for the OP becomes: Did you pull the valve cover and harmonic balancer to check the timing was good?

 

And can't you run the engine around X amount of time see the marks lined up and then crank it around what 8 or 9 times and if it lines up again then it's correct or something along this methodology. Of course I guess it assembly you would do this check while you're getting ready to put the parts you're going to take off now back on back then.

 

If everything is lined up I don't think I would tear it all back apart again to replace the timing chain but that would be just me I guess

 

Is the intake cam mark that you are lining up to for sure the correct one? I believe there's a short one and a long one and I imagine it's easy to confuse.

I could not for the life of me get a new (cloyes) chain on when I did my head gasket recently. As soon as I installed the chain dampener it would pop off. I tried nudging the crank, but it didn't feel right and I didn't have help, so I re-installed the old one. Interested to hear how it goes for you. I also checked my VVT filter and it looked brand new.

 

Good Video of Prius Timing chain marks cam and crank marks 1.8L 2ZR

 

Toyota timing chains have never been notorious for stretching and going bad or whatever we want to call it all the way back to the old days late '70s early '80s I had double row timing chains in R engines. Fast forward a few years later to single row chains and various and sundry engines but Toyota also went to a lot of belts during that time also had some gear drive not belt or chains on T series engines Toyota's never had Sirius timing component issues chains belts or otherwise for the most part I would expect the chain on the Toyota engine to generally last near the life of the engine for the most part in all 22R engines that could be easy $250,000 mi.

 

Regardless many diy manage to get the chain timing off by one tooth, sometimes several times.

I wonder if the crank gear top dead center instructions and illustration in the manual throws people off when they are working on the engine in the car.

The manual assumes the engine is pulled and is on an engine stand where the keyway is straight up to the “top”.


But in the car the engine is slanted back as is the keyway.


Regardless of the reason, sometimes the assumption is the chain “skipped” a tooth during tensioning or initial startup.