they are about six kinds of annoying.

 

We refer to those as the Cam Sensor--the Factory Manual refers to is as the "Camshaft Position Sensor"

So if anything it should be called the CPS (there is no reference to CAS in any 99-05 FSM).

The acrynom CAS, for all intents and purposes, herby only refers to the Crank Angle Sensor on the back of all NA miata camshafts.

 

you are right. I am a bit used to CAS since m.net tends to use them interchangeably.

 

So they look like this

 

That's how my plugs look when they come out. Probably a sign that you're a bit on the rich side if you're NA, but I've never been good at reading plugs.

As for the oil leak, if you're still chasing that down... My '99 was leaking at the back of the valve cover where the cam sensor would be on a '94-'97 and it took me forever to find it. There's a plug that slips in between the head and the valve cover that the oil was leaking under. I pulled it out and put some gasket maker on it and it fixed the problem.

 

this car is burning a lot of oil. I can check the plugs tomorrow

 

So last night I turn on my car and something just wan't right. Wasn't even driving it hard last time I drove it. 150 140 140 120 dry. The car is running very rich 11-12. lots of black smoke.
But cylinder 2 and 3 seem to be the ones missing. Idle doesn't really change when 2 and 3 plug wires are removed even at the same time. moved the coils and no improvement. swapped out the cam and crank sensor. I'm going to replace the timing wheel tomorrow.

Replaced the plugs this morning no improvement and swapped the coils and wires ALL around.



anything I haven't tried or is it rebuild time?

 

Well it started to play nice and threw a code P0302
Cylinder 2 has 140 compression.
new plugs, tried different wires and coil packs.
Maybe missing a tooth on the timing trigger one of them looks short.

 

I got gas in the oil from a stuck injector...

 

Injector woes suck.