2G Did a pull, car shut off, fires wont start

[Cynxe]

My wastegate opens at 30psi, i did a pull to around 26psi and let off. My wideband read all air and died. I tried to start it but it just fires and wont start. I have check and changed the following. Nothing has fixed it
-Timing
-compression
-cam sensor
-crank sensor
-map sensor
-coil
-ignitor box
-fuel injector resistor box
-spark
-fuel pressure
-mpi/mfi relays
What else is there??
Heres a video of the issue.

You must be logged in to view this image or video.

 

[10's or bust]

Have you checked the fuel pressure and all wiring connections both going to and from the fuel pump as well

 

[boostdawd]

My wastegate opens at 30psi, i did a pull to around 26psi and let off. My wideband read all air and died. I tried to start it but it just fires and wont start. I have check and changed the following. Nothing has fixed it
-Timing
-compression
-cam sensor
-crank sensor
-map sensor
-coil
-ignitor box
-fuel injector resistor box
-spark
-fuel pressure
-mpi/mfi relays
What else is there??
Heres a video of the issue.

You must be logged in to view this image or video.

Sounds like weak compression. Where was your numbers at?

 

[Cynxe]

Sounds like weak compression. Where was your numbers at?

150+. Definitely not weak.

 

[Cynxe]

F

Have you checked the fuel pressure and all wiring connections both going to and from the fuel pump as well

Fuel pressure is at 45.

 

[boostdawd]

I agree. That's some good numbers.

So u get spark, fuel and air yet it still won't stay running. Dumb question but have u done a boost leak test.

 

[Cynxe]

I did a boost leak test the other day. Held 40psi. Im on speed density so id assume it doesn't matter regardless. I have spark and air of course. It almost seems like my injectors aren't firing.

 

[Vegas Smith]

Loosen the fuel rail and see if the injectors spray.

 

[Cynxe]

Loosen the fuel rail and see if the injectors spray.

Thats my next go

 

[doubleclutch]

Are you sure your timing is right? Sounds like backfiring and rough/loppy idle.

 

[Cynxe]

Are you sure your timing is right? Sounds like backfiring and rough/loppy idle.

Yup, 100% checked it twice. Before this issue i was having an issue with some wire on my ignitor plug, but this issue may be a wire or something, im trying to find help before i dig into my harness

 

[motomattx]

Could still have a blown head gasket in between cylinders!

 

[Cynxe]

Could still have a blown head gasket in between cylinders!

Extremely unlikely. Compression is good

 

[motomattx]

Extremely unlikely. Compression is good

Compression doesnt tell the whole story, which is why we modern day mekaniks use a leak down test before manufacturers will pay for teardown, too many warranty dollars wasted due to lack of information about the internals from only a compression test.

 

[Cynxe]

Compression doesnt tell the whole story, which is why we modern day mekaniks use a leak down test before manufacturers will pay for teardown, too many warranty dollars wasted due to lack of information about the internals from only a compression test.

Well, if all my cylinders are 150psi+ thats way more than enough for my car to start and run good. Because thats what they were when i put the engine in my car. If it were a bad gasket, or a bad valve. The compression test will definitely show low compression on 1 or more cylinders.

 

[motomattx]

The 150 is good, almost too good, I am suspicious of it in fact, have you checked the coolant for bubbling when you crank it?

 

[Cynxe]

No. But it's never overheated. Coolant stays full. Doesn't push coolant out. It's probably not an issue even related to this tbh

 

[Cynxe]

Avtu

The 150 is good, almost too good, I am suspicious of it in fact, have you checked the coolant for bubbling when you crank it?

Actually when it died on me and didn't want to start again. I had accepted already that it blew up. I thought it was my rings but nope

 

[joemamma]

assume nothing check it all again-look for bubble in coolant, check timing, check ignition componets, do a leak down test etc

 

[miguelmcv]

Sounds more like off timing, I know you have said you checked it but can you check it again and take some pics to the bottom and top marking lines, we might see something you aren't seeing.
Also what cas do you have is it a 1g or 2g.

 

[doubleclutch]

If it is backfiring, it is either getting fuel or spark at the wrong time. It is very easy to be off of timing and think it is ok. I have done the timing belt 5 times and it still is tricky. Did you pull the cover? how do you know bottom end didn't move?

 

[joemamma]

If it is backfiring, it is either getting fuel or spark at the wrong time. It is very easy to be off of timing and think it is ok. I have done the timing belt 5 times and it still is tricky. Did you pull the cover? how do you know bottom end didn't move?

i agree it totally sounds like it