Intro

[dmention7]

Looks like i'll have to remove the coolant hoses going thru the firewall. If i do this, will coolant spray everywhere?

Your best bet is to clamp them off before you pull them, but you're still going to get the entire heater core draining out the tubes sticking from the firewall. Even if you went and drained the coolant, you're still going to have to deal with a few cups more than likely. I used to be super careful about draining coolant before I did any work like that, but now I just throw a big flat rubbermaid tub (like the under-bed storage) below where I'm working and yank the hose off.

 

[concealer404]

Is it possible for a coil pack to have the correct resistance reading but still be bad? Both of mine read 12.6kΩ but one is clearly not putting out spark.

Yes but not likely. What year is this thing again? It has two coils, trying to remember how spark is really controlled.

 

[Cmezz331]

It's a 1993

 

[220swift]

Quick off-topic question: does anyone know if ALL pre-06 miatas had 4x100 wheels?

 

[220swift]

Nevermind, i solved the problem myself.

 

[220swift]

New coil pack is installed. Plug wires are replaced and sealed with dielectric grease. Still no spark. Looks like its time for a carbureted, distributor ignited v8 swap. I don't care if it only makes 200hp. I'm done with electronics.

 

[220swift]

Update: Dunno if anyone is following this anymore, but i'm 99.99% sure i figured it out. http://www.rivercityroad.com/garage/cas.htm"

One comment. It is not unusual for one of the wires in the CAS plug to break. I have seen this happen on a friends car where the yellow/blue wire broke. The car did not start of course, nut when checking for spark, one coil did fire. I can't recall which one.

 

[concealer404]

Oh i forgot the 1.6 had a CAS... you should probably look into that.

 

[220swift]

The plug pins all have proper voltage and continuity. I ordered a replacement CAS the other day so i might have her running by week's end. I went with the magnetic one from the NB yattas.

 

[MaxVandervelde]

I feel like we've been down this road before
>Surely it's the Fuel injectors
>Surely it's the coil packs

 

[Cmezz331]

are you sure the nb one works with the na?

 

[220swift]

There's literally nothing else it can be. New plugs, new wires, new coil pack, good CAS plug, good CPU, timing belt is still there...

 

[MaxVandervelde]

Totaled. Give up.

 

[220swift]

are you sure the nb one works with the na?

Yes. While the NA used an optical sensor, and the NB used a magnetic sensor, the actual electrical output is identical. The physical shape of the two units are also interchangeable. The only difference is that the plug sticks out at a slightly different angle, but not enough to cause wiring problems.

>inb4 the 1.8 engine had the CAS on the exhaust cam

 

[Cmezz331]

wait you used a 1.8 cas? do dat shyt werk?

 

[MaxVandervelde]

Now for the real question:
How can we set it on fire again?

 

[220swift]

Yes, "dat shyt werk."
No, we will not set fire to it again.

 

[MaxVandervelde]

Yes, "dat shyt werk."
No, we will not set fire to it again.

That's what you think

 

[220swift]

Will work. The only way we set it on fire is if we get shit tires and do a flaming burnout.

 

[Cmezz331]

flaming (gay) burnout......because miata...HAHAHAHLOLOLOL