2016-2018 Chevrolet Spark Timing Cover: Leaks, Oil Pump, and Replacement Costs
This guide covers the common failure points, inspection tips for used parts, and replacement costs for the timing cover on the 2016-2018 Chevy Spark 1.4L engine.
- The timing cover for the 2016-2018 Spark's 1.4L engine includes the oil pump and front crankshaft seal.
- The most common failure is an oil leak from the cover's gasket, but a failure can also cause critical low oil pressure issues.
- Replacement is a labor-intensive and difficult job (4/5), with shop labor costs often exceeding $1,300.
- When buying a used cover, inspect for cracks and always install a new front crankshaft seal before installation.
Symptoms of a Failing 2016-2018 Spark Timing Cover
Failure of the timing cover assembly typically relates to two things: the gasket failing and causing an oil leak, or a problem with the integrated oil pump. The symptoms for each are distinct but can be related.
1. Oil Leaking from the Front of the Engine
This is the most common symptom. The gasket that seals the timing cover to the engine block can become hard and brittle over time, allowing oil to seep out. You might notice:
- Visible Drips or Puddles: Small spots or a puddle of fresh oil on the ground directly under the front of the engine, near the passenger side.
- Oil Stains on the Engine: A dark, grimy layer of oily residue on the front of the engine block and around the oil pan.
- Burning Oil Smell: If the leaking oil drips onto the hot exhaust manifold, you may notice a sharp, acrid smell, especially after the car has been running.
2. Low Engine Oil Level
A persistent leak will cause the engine oil level to drop over time. If you find yourself needing to top off the oil between changes and can see evidence of a leak at the front of the engine, the timing cover gasket is a likely suspect. Letting the oil level get too low can lead to serious engine damage.
3. Low Oil Pressure Warning Light
Because the oil pump is built into the timing cover on the 1.4L LV7 engine, a severe leak or a failure of the pump itself can cause a drop in oil pressure. This may trigger the oil pressure warning light on your dashboard. This is a critical warning; if you see it, you should stop the engine as soon as it is safe to do so to prevent catastrophic failure.
Warning: Do not ignore a low oil pressure warning. Continuing to drive can destroy the engine in a very short amount of time.
Known Issues, TSBs, and Recalls
As of this writing, there are no specific recalls or widespread, common failure trends directly involving the timing cover for the 2016-2018 Chevrolet Spark. However, several Technical Service Bulletins (TSBs) exist for other engine-related issues on the 1.4L LV7 engine that a technician or DIYer should be aware of when diagnosing engine problems:
- TSB 21-NA-268: Addresses a crank/no-start condition or various engine performance DTCs (P0014, P0017) which may be caused by an out-of-phase exhaust camshaft reluctor wheel.
- TSB PIP5472E: Pertains to a rough idle or misfire (DTC P050D, P0300) during a cold start in cold weather, potentially caused by the exhaust Stationary Hydraulic Lash Adjusters (SHLAs).
- TSB 16-NA-118: Concerns the engine wiring harness rubbing against the ECM (Engine Control Module) bracket, which can cause shorts and a variety of electrical issues, including a no-start condition.
While these do not point to a faulty timing cover, they are important related issues for anyone troubleshooting the 1.4L LV7 engine.
Buying a Used 2016-2018 Spark Timing Cover: What to Check
A used OEM timing cover can be an excellent value, offering the same fit and quality as a new dealer part for a fraction of the price. Aftermarket availability for this specific cover is limited, making a quality recycled part an even better option. Here’s what to inspect before buying.
Key Inspection Points:
- Check for Cracks: Carefully inspect the entire cover, especially around the bolt holes and mounting bosses. Any hairline cracks can cause leaks and make the part unusable.
- Examine Sealing Surfaces: Run your finger along all the surfaces where gaskets will sit. They should be smooth, flat, and free of deep scratches, corrosion, or warping that could prevent a proper seal.
- Verify Part Number and Engine Code: Ensure the cover is from a 2016-2018 Spark with the 1.4L LV7 engine. The correct OEM part number is 12665904. A later part number, 12688812, fits 2019 and newer models and may not be compatible.
- Inspect the Integrated Oil Pump: Ask about the mileage and history of the donor vehicle. A cover from a low-mileage, running vehicle is ideal. While the integrated pump is generally robust, it is a wear item. Inspect the pump gears for any visible scoring or damage if possible.
Pro Tip: Always install a new front crankshaft seal into the used timing cover before installation. This seal is inexpensive and replacing it is cheap insurance against having to do the entire job over again to fix a leak from an old seal.
Replacement Overview & Difficulty
Replacing the timing cover on a 1.4L Spark is a difficult and labor-intensive job. It is not recommended for beginners.
- Difficulty Rating: 4 out of 5
- Primary Challenge: Accessing the cover requires removing the serpentine belt, engine mount, and most importantly, the crankshaft pulley (harmonic balancer). The balancer often requires a special puller tool to remove.
- General Steps: The process involves draining the oil, supporting the engine, removing the passenger-side engine mount, removing the belt and tensioner, removing the crankshaft pulley, unbolting the cover, cleaning all surfaces, and then reassembling with new gaskets and seals.
Cost Comparison: New vs. Used
Labor is the most significant expense for this repair. The part itself is relatively inexpensive, but the time required for replacement drives up the cost significantly.
| Part or Service | Estimated Cost | Notes |
|---|---|---|
| New OEM Part (12665904) | $85 - $135 | Price from a GM dealership or online OEM retailer. |
| New Aftermarket Part | Not Widely Available | Aftermarket options for the complete cover assembly are scarce. |
| Used OEM Part | $50 - $90 | Offers OEM quality and fit at a lower price point. |
| Shop Labor | $1,300 - $1,900 | This is a high-labor job. This estimate is based on the labor required for a timing chain tensioner replacement, which involves the same disassembly. |
Frequently Asked Questions (FAQ)
Is the oil pump really part of the timing cover on the 2016-2018 Spark?
Yes. On the 1.4L LV7 engine used in these models, the oil pump is integrated into the timing cover assembly. This is why a problem with the cover can lead to oil pressure issues.
Can a leaking timing cover cause major engine damage?
Yes, absolutely. A significant leak can lead to a low oil level, causing oil starvation that can damage bearings, camshafts, and other internal components, potentially leading to catastrophic engine failure.
Do I need special tools to replace this timing cover?
Yes. You will almost certainly need a harmonic balancer puller to remove the crankshaft pulley, which is a required step. You will also need a torque wrench for proper reassembly and a way to support the engine while the passenger-side mount is removed.
Should I replace the timing chain and tensioner at the same time?
Since replacing the timing cover requires accessing the timing components, it is highly recommended to inspect the timing chain, guides, and tensioner. If the engine has high mileage or if you are already experiencing timing-related noises, replacing these components at the same time is a smart move that will save you from paying for the same labor twice in the future.
Technical Specifications
OEM Part Numbers: 12665904
Material: Aluminum. Fits Engine: 1.4L LV7. Integrated Components: Engine Oil Pump, Front Crankshaft Seal.
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chevrolet Spark:
- Symptoms of a Failing 2016-2018 Spark Timing Cover
- 1. Oil Leaking from the Front of the Engine
- 2. Low Engine Oil Level
- 3. Low Oil Pressure Warning Light
- Known Issues, TSBs, and Recalls
- Buying a Used 2016-2018 Spark Timing Cover: What to Check
- Key Inspection Points:
- Replacement Overview & Difficulty
- Cost Comparison: New vs. Used
- Frequently Asked Questions (FAQ)
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