Sr20probs

I did man still nothing I’ll keep trying to figure out why it’s not spraying fuel while cranking

S14rebuild

Injector pulse comes from a signal from the cas... it tells the ecu when to ground each injector driver, which fires the fuel injector.


Have u checked to see if u have that signal via cranking the engine and using the monitors on the megasquirt software?

Sr20probs

I have not, I definitely will tho sorry this megasquirt thing is all new to me.i appreciate the time to reply with detailed responses.

Sr20probs

I have everything ready to install the CAS, one thing tho on the FRS post is the dots seem to be opposite, like my right dot is lower than the left, every video I?ve seen the lower dot is on the left. Heres a picture of how the Dots are positioned. https://imagizer.imageshack.com/v2/3...923/GwW7Ol.jpg

S14rebuild

Yea, its s diffrent version of cas...i have the same one u do...u got it installed right. Even if it was a tooth off, if u turn it all tje way left or right it will still start.

But were at a point of no injector pulse..... even if u took the cas out, plugged it in..turn the key on and spin the cas by hand, u should hear the injectors fire/click.

Please check for cas signal on megasquit

Sr20probs

With my CAS lined up on the lower dot on the right, is trigger wheel correct? https://imageshack.com/i/poFV22Arj

S14rebuild

Do this.......

Sr20probs

Going to do it now, where can I find it on tinder studio and any tips before?

Sr20probs

Plugged in my CAS I heard some clicking from the injectors for a little bit then it stopped. Unplugged it and Plugged it back in then nothing. I turned my fuel pump on, 43psi, and nothing

S14rebuild

Well, what are u missing? Postive 12volt or ur pulsing ground on the injectors?


Also id recommend tryn another know good cas.

Sr20probs

Okay so where do I go to check the 12v and ground on tuner studio?

Sr20probs

Now I’m getting slight pops with fuel pump on . That’s it tho

Sr20probs

Update. Have fuel from all 4 injectors. Have spark at all 4 plugs. Plugs are covered in fuel. Mechanical timing is correct. CAS is stabbed correctly. When using starter fluid it will backfire out of the intake. Injectors seeem plugged in right. Can’t figure this out. Bad CAS?

metako42

This is a long shot but did you remove the CAS chopper plate from the CAS? If so, you might have installed the chopper plate backwards like I once did. Soon as I flipped it the thing started.