Car

Family Mazda

2009 MAZDA Mazda5 · Sport

Specifications

Body
Body style
Wagon
Engine & drivetrain
Engine
2.3L
Transmission
Automatic
Fuel type
Gasoline
Drive
FWD
Manufacturer
Displacement
2.3L
Engine model
L3V (2.3L) Federal
Body class
Wagon
Vehicle type
Passenger CAR
Doors
4
GVWR
Class 1: 6,000 lb or less (2,722 kg or less)
Assembly plant
Hiroshima, Japan
Manufacturer
Mazda Motor Corporation

2026

Nick and I replace the valve cover gasket and spark plugs

When we had the alternator replaced, the garage said we had a mild oil leak from the valve cover. The gasket was pretty cheap, and it was a simple job of removing 12 bolts and a few hoses, so I thought Nick and I would do the work at home. He gets the chance to learn about car maintenance, and I save some $.

Maintenance
New valve cover gasket, spark plugs and check clearance
2026-08-12 · manufacturer service · completed·Self
$100.07

From the manufacturer maintenance schedule. Includes overdue items — verify whether any were already done.

  • Mazda Valve Cover Gasket
    Valve Cover Gasket
    Brand
    Mazda
    Part no.
    L501-10-230
  • NGK Spark plug ×4
    Spark plug
    Brand
    NGK
    Part no.
    LTR5IX-11
    Quantity
    4
  • Performance Tool Feeler gauges (32)
    Feeler gauges (32)
    Brand
    Performance Tool
    Part no.
    W125C

We did the work on Sunday, and it was pretty straight forward. Of course, YouTube was our guide. There are quite a lot of videos on replacing the gasket, but this one was short and to the point.

We had the cover off in about 15 minutes.

And the new gasket was very easy to replace. The old one had hardened pretty bad and around one spark plug was a decent pool of oil, so clearly leaking.

The most difficult part was removing some of the clips that sit over the top of the bolts that connect to the wires for the ignition coils. But after some slim screwdrivers were inserted inside, we quickly figured out how to release them without breaking them.

All in all, done in under an hour. We replaced the gasket and the plugs.