When you do timing belt work on 2001-2005 Mazda Miata 1.8 engines, there is an important step you can take to avoid a common no-start condition after the repair is complete.
These engines use a sensor plate that sits behind the crankshaft pulley. The plate is critical to proper timing and engine function. The plate is also directional — so if you don’t mount it facing the correct way, the engine will not start.
We recommend that before removing the plate during your repair work, you should mark the forward face so that it’s easily identifiable. This side should face FORWARD (toward the front of the vehicle) when reinstalled.
IF YOU FORGET TO MARK THE PLATE:
- Look for marks left on the plate by the crankshaft pulley and the pulley boss
- The crankshaft pulley has a LARGER diameter and is the FRONT of the plate (the side that should face forward when reinstalled)
These helpful tips are included in this episode of Inside the Brands, and should help you avoid a no-start situation with the 2001-2005 Mazda Miata 1.8-liter engine. If you are looking for a complete timing belt kit for this engine, look no further than the ContiTech ProSeries and ProSeries Plus lines of timing kits.