Why are the spark plugs on a Miata not straight?
The ceramic insulator on the spark plug has straight sides – not ridges like the factory NGK plugs. As a result, the rubber boots on the spark plug wires sometimes grabs the ceramic insulator so tightly that the boots stay behind when the wires are removed.
How long do ignition plugs last on a Miata?
OEM plugs usually are somewhere in the middle. Common Problem! The factory ignition wires on the Miata only seem to last between 30,000 and 50,000 miles. If you are experiencing misfiring and hesitation and you haven’t changed your wires, this is most likely the cause.
What do you use to grease the plugs on a Miata?
Apply Silicon Grease to inside of bottom seals of plug wires (i.e. inner surface of plug wire which mates to the ceramic insulators on the plugs)
Where are the spark plugs on a Mazda MX 5?
The spark plugs sit on top of the cylinders on a MX-5. Looking at the engine you can see a set of spark plug leads running down the engine with 4 rubber boots in the centre of the engine’s rocker cover. The spark plugs are set about 80mm under those rubber boots.
Why is my spark plug not working on my Miata?
Change the wires! In case you forget which plugs is which, refer to the firing order diagram below. This is caused by breakdown of the insulation on the wires which results in the spark arcing through the insulation to the metal valve cover instead of through the spark plug electrodes.
OEM plugs usually are somewhere in the middle. Common Problem! The factory ignition wires on the Miata only seem to last between 30,000 and 50,000 miles. If you are experiencing misfiring and hesitation and you haven’t changed your wires, this is most likely the cause. Change the wires!
How do you check the ignition on a Miata?
An easy way to check is, pull #1 spark plug, and drop the dipstick down the hole. Turn the motor by hand and watch the dipstick until it peaks at top dead center. This will tell you the crank shaft is at TDC. Now check to see where the timing mark on the crank pulley lines up.
How can I tell if my Miata is at TDC?
An easy way to check is, pull #1 spark plug, and drop the dipstick down the hole. Turn the motor by hand and watch the dipstick until it peaks at top dead center. This will tell you the crank shaft is at TDC. Now check to see where the timing mark on the crank pulley lines up.