🔧 Fusion - Timing Belt Replacement

Your Fusion with the 2.0L plug-in hybrid engine does not use a timing belt. It uses an internal timing chain, which is designed to last much longer and is not a normal maintenance replacement item.

If you are hearing chain rattle, have cam/crank correlation codes, rough running, or a no-start condition, the correct repair is timing chain system diagnosis, not timing belt replacement.

Difficulty Level: Advanced | Estimated Time: Diagnosis: 1-2 hours; Timing chain repair: 8-12 hours

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⚠️ Safety & Precautions

• ⚠️ Your Fusion is a plug-in hybrid. High-voltage components can cause severe injury or death.
• ⚠️ Do not touch, disconnect, probe, or remove orange high-voltage cables or high-voltage components.
• ⚠️ Unplug the charge cord before any service work.
• ⚠️ Timing chain work requires engine support and precise camshaft/crankshaft alignment. Incorrect timing can cause serious engine damage.
• ⚠️ Battery disconnect is required before disassembly near engine electrical connectors.
• ⚠️ This is not recommended as a first-time DIY repair unless you have experienced help and the correct Ford timing tools.

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🔧 Required Tools

You'll need the following tools for this repair:

• Ford 2.0L timing tool set (specialty)
• Engine support bar (specialty)
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• 10mm socket
• 13mm socket
• 15mm socket
• 18mm socket
• 21mm socket
• 8mm socket
• 1/4-inch ratchet
• 3/8-inch ratchet
• 1/2-inch breaker bar
• 3/8-inch torque wrench
• 1/2-inch torque wrench
• Socket extension set
• Serpentine belt tool (specialty)
• Crankshaft pulley holding tool (specialty)
• Harmonic balancer puller (specialty)
• Plastic trim clip remover
• Gasket scraper
• Engine oil drain pan
• Coolant drain pan
• Digital multimeter
• OBD-II scan tool with Ford hybrid system coverage

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Timing chain kit - Qty: 1
• Timing chain tensioner - Qty: 1
• Timing chain guides - Qty: 1 set
• Front timing cover gasket set - Qty: 1
• Valve cover gasket - Qty: 1
• Crankshaft front seal - Qty: 1
• Crankshaft pulley bolt - Qty: 1
• Engine mount bolts - Qty: As required if removed
• Motorcraft-approved silicone sealant - Qty: 1
• Engine oil - Qty: As required
• Oil filter - Qty: 1
• Engine coolant - Qty: As required

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📋 Before You Begin

• 🚗 Park your Fusion on level ground and set the parking brake.
• 🔌 Unplug the charge cord from the vehicle.
• 🔑 Turn the vehicle fully off and keep the key at least 10 feet away.
• ⏱️ Wait at least 5 minutes so vehicle modules can go to sleep.
• 🔋 Disconnect the 12V battery negative cable using a 10mm socket.
• 📘 A timing chain is a metal chain inside the engine that keeps the crankshaft and camshafts synchronized.
• 📘 A timing tool set locks the crankshaft and camshafts in the correct position so the engine timing does not move.
• 📘 Torque means the exact tightness of a bolt, measured with a torque wrench.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Verify This Is Not a Timing Belt Job

• Use safety glasses and open the hood.
• Look at the front of the engine where the belt-driven accessories are located.
• Your Fusion has an external serpentine belt for accessories, but the engine timing system is an internal chain.
• Do not purchase a timing belt kit for this engine.
• No timing belt is installed.

Step 2: Scan for Timing-Related Fault Codes

• Connect the OBD-II scan tool with Ford hybrid system coverage to the diagnostic port under the driver side dash.
• Turn the vehicle to Ready mode without touching any high-voltage components.
• Scan all modules and record any diagnostic trouble codes.
• Common timing-related codes may include camshaft/crankshaft correlation or variable cam timing faults.
• Do not clear codes until they are written down.

Step 3: Check 12V System Health Before Diagnosis

• Use a digital multimeter set to DC volts.
• Touch the red lead to the 12V battery positive terminal and the black lead to the negative terminal.
• Vehicle off voltage should be around 12.6 volts on a healthy, charged battery.
• Low 12V voltage can create false warning lights and confusing hybrid codes.

Step 4: Decide Whether Chain Repair Is Needed

• If there are no timing codes and the engine runs quietly, no timing chain replacement is normally needed.
• If there is startup rattle, metal noise from the timing cover, no-start, or repeated cam/crank correlation codes, continue with professional-level diagnosis.
• If high-voltage or hybrid system codes are present, stop and have the vehicle inspected by a hybrid-qualified technician.

Step 5: Prepare for Timing Chain Service

• Use wheel chocks behind the rear wheels.
• Use a floor jack (rated 3-ton minimum) at the correct front lift point.
• Support the vehicle with jack stands (rated 3-ton minimum).
• Remove the right front wheel using a 21mm socket and 1/2-inch breaker bar.
• Remove the lower splash shield fasteners using an 8mm socket and plastic trim clip remover.

Step 6: Support the Engine

• Install the engine support bar (specialty) across the upper body support points.
• Attach the support chain to the engine lifting point.
• Take light tension with the support bar before removing any mount bolts.
• An engine support bar safely holds the engine when a mount is removed.

Step 7: Remove Accessory Drive Components

• Use the serpentine belt tool (specialty) to rotate the belt tensioner.
• Slide the serpentine belt off the pulleys and slowly release the tensioner.
• Use a 15mm socket and 3/8-inch ratchet to remove accessible accessory bracket fasteners as needed.
• Keep bolts organized by location.
• Take photos before removing parts.

Step 8: Remove the Engine Mount and Timing Cover Access Parts

• Use a 15mm socket, 18mm socket, and 1/2-inch breaker bar to remove the right-side engine mount fasteners.
• Remove only after the engine is safely supported by the engine support bar (specialty).
• Use a 10mm socket and 13mm socket to remove timing cover brackets and small cover fasteners.
• Do not pry against sealing surfaces with metal tools.

Step 9: Remove the Crankshaft Pulley

• Install the crankshaft pulley holding tool (specialty).
• Use a 1/2-inch breaker bar and the correct socket from your set to loosen the crankshaft pulley bolt.
• Use the harmonic balancer puller (specialty) to remove the pulley if it does not slide off by hand.
• Discard the crankshaft pulley bolt if it is torque-to-yield. Torque-to-yield bolts stretch and should not be reused.

Step 10: Remove Valve Cover and Front Timing Cover

• Use a 10mm socket and 1/4-inch ratchet to remove valve cover fasteners.
• Lift the valve cover carefully and remove the old valve cover gasket.
• Use a 10mm socket and 13mm socket to remove front timing cover fasteners.
• Use a gasket scraper carefully to separate old sealant without gouging aluminum.

Step 11: Lock Engine Timing

• Rotate the crankshaft by hand using a 1/2-inch breaker bar until cylinder 1 is at top dead center.
• Top dead center means the piston is at the very top of its travel on the compression stroke.
• Install the Ford 2.0L timing tool set (specialty) to lock the crankshaft and camshafts.
• Do not move the crankshaft or camshafts after the timing tools are installed.

Step 12: Replace Timing Chain Components

• Use a 10mm socket and 13mm socket to remove the timing chain tensioner and guides.
• Remove the old timing chain kit components.
• Install the new timing chain guides, timing chain tensioner, and chain from the timing chain kit.
• Align all timing marks exactly as directed by the timing tool set.
• Torque values vary by fastener and build configuration. Use the Ford service specification for each bolt before tightening.
• Torque to Ford service specification

Step 13: Recheck Timing Before Closing the Engine

• Remove the Ford 2.0L timing tool set (specialty) only after the tensioner is set.
• Rotate the engine by hand two full crankshaft turns using a 1/2-inch breaker bar.
• Reinstall the timing tools to confirm alignment.
• If the tools do not fit easily, stop and correct the timing before reassembly.

Step 14: Reseal and Reinstall the Timing Cover

• Clean old sealant from the cover and engine block using a gasket scraper.
• Install a new crankshaft front seal.
• Apply Motorcraft-approved silicone sealant in the correct locations.
• Install the timing cover using a 10mm socket and 13mm socket.
• Tighten fasteners in an even pattern.
• Torque to Ford service specification

Step 15: Reinstall Removed Parts

• Reinstall the valve cover with a new valve cover gasket using a 10mm socket.
• Reinstall the crankshaft pulley using a new crankshaft pulley bolt and 1/2-inch torque wrench.
• Reinstall the right engine mount using a 15mm socket, 18mm socket, and 1/2-inch torque wrench.
• Torque to Ford service specification
• Remove the engine support bar (specialty) only after all mount bolts are installed and torqued.

Step 16: Reinstall Belt, Shield, and Wheel

• Use the serpentine belt tool (specialty) to reinstall the serpentine belt on the correct pulley path.
• Install the splash shield using an 8mm socket and plastic trim clip remover.
• Install the right front wheel using a 21mm socket.
• Lower the vehicle from the jack stands (rated 3-ton minimum) using the floor jack (rated 3-ton minimum).
• Torque wheel lug nuts to 135 Nm (100 ft-lbs)

Step 17: Refill Fluids and Reconnect Battery

• Refill engine oil if drained and install a new oil filter.
• Refill engine coolant if drained.
• Reconnect the 12V battery negative cable using a 10mm socket.
• Start the vehicle in Ready mode and check for leaks.

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✅ After Repair

• ✅ Let your Fusion reach operating temperature and check for oil or coolant leaks.
• ✅ Use the OBD-II scan tool with Ford hybrid system coverage to clear codes and recheck for returning timing faults.
• ✅ Listen for abnormal rattles from the timing cover area.
• ✅ Recheck engine oil and coolant levels after the first heat cycle.
• ✅ If the engine runs rough, stalls, or sets cam/crank correlation codes, shut it off immediately and recheck mechanical timing.

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💰 DIY vs Shop Cost

Shop Cost: $1,800-$3,500+ for timing chain service

DIY Cost: $450-$1,100 for parts, fluids, sealants, and specialty tools

You Save: $900-$2,400 by doing it yourself, if you already have the skill and tools!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 8-12 hours.

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🎯 Ready to get started?

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