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Camshaft Position Sensor is on the back of the valve cover on the right side (if looking directly at the engine from the front of the car).
The fuel pump is located inside the gas tank.
Pictorial guide: http://www.miata.net/garage/clutch2.html
I use 5-W30 in my 1990, and since the 1993 is almost as old, I would recommend the same oil weight.
The idle air control valve is on the the bottom of the throttle body.
Check the rear light wires, could be a short
automatic has a dipstick under the hood. manual should have a plug on the side of it.
Under the dash, to the left of the steering column. It's a gray box, that says "Flasher" on it. It is held in by a single clip, then pull straight down to remove it.
generally there is a card or something that's in the owners book with the # for it.. otherwise go by the Mazda dealership they usually have a universal that can solve the problem
The fuel filter is underneath the car , just inside of and in front of the passenger side rear wheel. It is covered by a sheet metal protective piece that can be removed with a 10mm socket.
1993 what?
The B2600i does not have an EGR valve, because the truck is fuel injected the ECU monitors driving conditions and retards ignition timing to lower NOx emissions. Kyrasis6 Mazdatruckin.com