2G Crank no start/ what I’m I overlooking

[miliman13]

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here’s a lill history because I know it will come up

I’ve built the car over 10yrs now
2 summers ago she made 530hp blah blah
I’m obsessive; so I’m very meticulous

This why I haven’t had to touch her in two years now for anything.

I have verified the following
Spark
Fuel
Fuel pressure
Compression
Mechanical timing
Ignition timing

I still changed out plugs / coils/ power transistors/
Speed density sensor

And nothing...

So it’s something else not so common; that’s what I need help investigating
Thanks all.


“””Ps she went from perfect, to this over night while parked”””

 

[arrowhead]

Do you still have a cat?

 

[miliman13]

How did u verify spark? U may be getting it on all cylinders but may be weak ok some. I had this happened on my talon. Spark was present on 2,3 but not as bright as 1,4. Coils were in spec. Swapped different coil packs on 2,3 for the heck of it and ran great afterwards. Mine was experiencing similar issues as yours.

Thanks for stopping by !!
I did verify spark on all 4
I even swapped out coils , but it wasn’t that .

 

[miliman13]

Do you still have a cat?

Good thinking.
But no , not since ever .

 

[miliman13]

Used a different ecu and injectors
And still no start

For fun
I verified spark and fuel flow/ pressure again
And 150psi across the board



No idea what else to try

 

[kodylk08]

I know it sounds too simple to solve the issue, but what is the battery voltage? I had a similiar issue a few years ago and it turned out to be a shit battery. Hopefully you have this figured out by now and this is completely irrelevant.

 

[DogWhistle]

Mili — how did I miss this post? Sorry to be late to the discussion, but check your TPS, both visually and on Link.

We feel for you. Recently had a no start of our own on the GSX and it turned out to be a loss of 12v power to one of the ecu “in” pins.

The only other thought was jumped timing belt...

Update your post and maybe someone will catch something overlooked.