Checks, in order
- Find the source before paying for anythingDegrease the engine, drive it, and look with a light at the rear of each cylinder head where the cam housing meets the head, above the exhaust manifold. A wet seam there is the cam tower. Oil only along the valve cover edge is a valve cover gasket, which is a far cheaper job.easy $ · under about $50
- Rule out the easy leaksCheck the oil filter housing, the VVT-i oil lines and the valve cover gaskets. Any of them can drip onto the same manifold and copy the smell.easy $ · under about $50
- The repairValve covers, timing cover and chains come off so the cam housings can be lifted and resealed with Toyota FIPG, usually both banks at once. Shops quote 7–8 hours or more; dealer estimates reported by owners run roughly $3,800–5,500, independent Toyota shops less. Some owners got goodwill help from Toyota while the truck was still young. There was never a recall.hard $$$ · shop-level job, $500+
- Living with a slow oneA seep that costs a quart between oil changes is not an emergency; a leak that soaks the manifold is a fire and oxygen-sensor risk. Oil on the sensor harness near the manifold is a known cause of A/F sensor heater codes.easy $ · under about $50
Applies to: 2nd generation Tundra, 2007 to 2021, with the 5.7L 3UR-FE V8 (most trucks), the 4.6L 1UR-FE (2010–2019) and the 4.7L 2UZ-FE (2007–2009). Engine-specific items say which engine they apply to. Assumes a stock truck.
Tools and parts for these checks
Links below are Amazon affiliate links: as an Amazon Associate, toyotadata earns from qualifying purchases, at no extra cost to you. Confirm fitment for your exact truck before you order.
| ITEM | USED FOR | BUY |
|---|---|---|
| UV leak detection kit | Pinpointing exactly where a leak starts | Shop on Amazon |
| Engine degreaser | Cleaning the area so the leak shows up | Shop on Amazon |
| Bluetooth OBD2 scanner with live data | Reading and clearing codes and watching live sensor data | Shop on Amazon |
Go deeper
The same problem on other Toyotas
Other engine problems on the 2nd Gen Tundra
More 2nd Gen Tundra problems
- Check engine light, VSC and 4LO flashing, truck stuck in limp mode (P0418, P2440, P2442, P2445) (Emissions)
- Pink crust or a drip at the front of the engine, coolant level dropping (Cooling)
- Turn the key: one click or nothing, engine does not crank (Starting & Charging)
- Brake booster motor buzzing, sinking or hard pedal, ABS/VSC/TRAC lights (Brakes)
- Gear oil on the inside of a rear wheel or on the brake backing plate (Drivetrain)
- Rust on the frame rails or rear crossmember, flaking or soft spots (Frame & Body)
All 10 2nd Gen Tundra symptoms in the interactive troubleshooter →
General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.