Before you can fix it, you need to diagnose what the problem is. Have you checked fuses and relays? Do you have continuity in the high beam circuit on the switch? Is there power to the point where the wiring harness splits off to supply each high beam lamp? Have you checked the bulbs? There are several different reasons why your high beams could be malfunctioning... without narrowing down the cause, you'll just end up wasting money by throwing parts at it until you get it right (if you do at all).
possibley change the valve guide seals
Miata's tend to tick a little.You can try 5-30 oil at your next oil change but it's unusual for a Miata not to tick a little at start up.
Replace the bulb. The low beams and high beams use separate parts inside the bulb. If replacing the bulb does not fix the problem, check the fuses.
If the high beam switch is broken that it should be replaced. When the unit is replaced the high beams will work again.
You dont. You replace it. Leave it to a professional. You dont want to experiment with brakes. DJ FLIP Housepartykings.com
Here you can find the whole instructions how to change your timing belt on a Miata http://www.racecaddy.com/mx5/tech/timing-belt-mx5.html it has good images and it is well explained good luck
OBD code P0304 indicates a misfire in cylinder 4 of your Mazda Miata. To fix this issue, first, check and replace the spark plug and ignition coil for cylinder 4, as these are common culprits. Additionally, inspect the fuel injector and ensure there are no vacuum leaks or issues with the fuel supply. If the problem persists, further diagnostics may be needed to assess the engine's compression or other underlying issues.
REPLACE OR CHECK THE EYE ATTACHED TO YOUR REARVIEW MIRROW
In a Fix - 2004 Nightmares and Beams was released on: USA: 17 March 2004
The Mazda Miata is a fun, easy sports car that can easily be worked on and fixed up. Because it's a Mazda, the parts are not especially expensive and can be found in many junk yards.
Make sure the bulbs are not burned out.
To fix the gas gauge on a 1990 Mazda Miata, first check the fuse related to the instrument cluster to ensure it's not blown. If the fuse is intact, inspect the fuel sender unit located in the fuel tank for any faults or debris. Additionally, verify the wiring and connections between the sender and the gauge for any signs of damage or corrosion. If these components are functioning properly, the issue may lie within the gauge itself, which may require replacement.