Set your timing way too high? in ms or the actual physical timing belt?

and I'll check the gap again right now

 

Sorry I wasn't very clear. When I was syncing the timing on first install, I misread a mark on the crank pulley as the TDC notch. The result was that the car ran but VVT error'd out with a VVT1 error.

The car ran fine though, just with no VVT working. Possible your crank pulley has slipped and your timing is way higher than you think it is? Would explain the rough running too?

 

Crank or cam sensor on its way out. Confirm with a datalog/composite log.

This is a very common mode of failure for these sensors.

Edit: If it justs does with no hiccups etc, it is most probably the crank sensor.

 

I can't help because I'm a n00b but watching this and hoping you figure it out soon.

 

I checked timing with a light. Its correct.
I posted a composite log and regular log in my troubleshooting thread: can you please take a look? I'm clueless when it comes to composite logs.
https://www.miataturbo.net/megasquir...7/#post1100275

 

You have RPM, so that's not it.

I didn't understand well, I somehow thought that the car would either die after running for something like 20 minutes, then wouldn't restart at all (wouldn't even attempt to catch).

You have solid RPM everywhere, so that's not that.

You have extremely high MAP values, which indicate one or two things:

a) There is a fault in the MAP sensor or there's a pinch/leak in the line somewhere
b) The engine is running so bad, it can't even pull 10+ kPa of vacuum. An engine running on two cylinders will pull 40+kPa. An engine running one 1 cylinder is not even running.

You have extremely low AFR values, which would suggest any of the following:

a) An injector is stuck open
b) Because of the extremely high MAP value, the MS3 is injecting so much fuel that the engine is flooding

I would check:

a) The MAP sensor and line. Make sure it has ~100kPa with the engine off, and that it reaches the values of ~13kPa and ~257kPa when manipulated with vacuum/boost (ie use a syringe)
b) The injectors and/or the injector drivers

 

Hmmmm, the injectors are near new ID1000's. I highly doubt they'd be stuck open but who knows.
The map line is attached very well and I see no kinks in the line, but of course I'll double check it RIGHT NOW. And yes it does read 100kpa with engine off.

Thanks man

 

Do you have all of the extra vac ports plugged? In one of the photos it looks like you have an open port behind the TB.

 

Yeah, the pics were taken before I fired it up.

And Rev I double checked the vacuum line its 100% solid and properly mounted and leak free.
I'm guessing vacuum is low because of the whole cam timing/vvt locked in advance issue?
As I am realizing in my other thread, I am starting to get convinced I accidentally advanced the vvt gear physically when setting timing and need to re-do the timing belt.

Didn't get to mess with it yet we had guests over, but today I will attack this thing and hopefully figure it out.

Hopefully. It makes me want to cry to have this beautiful beast all done and ready in my garage and still not driving it

 

I had a similar issue with my car, started fine first try and idled high, then after i shut it off it would not fire back up. Mine was due to the timing being way off. Ended up being my CAS, found TDC on the front piston and put the CAS back in with the mark pointing up as instructed in the FSM and was able to get it to fire up.

have you messed with the trigger angle settings at all in MS? I know you aren't using a CAS, but it really sounds like a timing issue to me.

GL vlad i really hope to hear thing this start soon. The vvt junk is over my head (never researched any of it, so i have no clue) - but you may just be onto something there as well.

 

I don't remember since its been a while from the last time I teared a VVT head apart: Can you use a non-VVT cam gear in place of the VVT actuator assembly?

 

No, the snouts of the cams are very different.

 

Figures, otherwise people would already be replacing the VVT actuator with a rare JDM cam gear from a low mileage early shortnose 1.6L JDM engine which was imported on a rare JDM fishing boat for teh mad power gains.

Also, its JDM, so yeah.

 

I DEMAND that this car runs, in the name of the mighty turbo gods. damn it

 

lol I'm just waiting for EO's cam to come in. I'm guessing tomorrow

 

I'm guessing today!

 

oh snap

 

Pictures of both cams side by side please (on bench, installed and down the cam sensor hole)?

 

welp

 

Are you sending a valve cover?

Mike's rebuilt engine with stock rods will be going into our '90, so this post is very exciting.