🔧 Civic - Timing Belt Replacement

Your Civic with the 2.0L inline-4 uses a timing chain, not a timing belt. That means there is no scheduled timing belt replacement service for your Civic.

If you are hearing rattling on startup, have cam/crank correlation codes, or suspect timing chain wear, the repair is a more advanced timing chain service that requires engine timing tools and careful alignment.

Difficulty Level: Advanced | Estimated Time: 6-10 hours

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⚠️ Safety & Precautions

• ⚠️ Do not remove the timing chain unless you are prepared to lock and verify engine timing. Incorrect timing can cause severe engine damage.
• ⚠️ Disconnecting the battery is required before removing engine covers and working near the starter/alternator wiring.
• ⚠️ Support the engine correctly before removing any engine mount parts.
• ⚠️ The crankshaft pulley bolt is extremely tight and may require high-force tools.
• ⚠️ Keep sealant out of the engine. Loose sealant can block oil passages.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 12mm socket
• 14mm socket
• 17mm socket
• 19mm socket
• 3/8-inch drive ratchet
• 1/2-inch drive breaker bar
• 1/2-inch drive torque wrench
• 3/8-inch drive torque wrench
• Honda crankshaft pulley holder tool (specialty)
• Crankshaft pulley bolt socket 19mm
• Engine support bar (specialty)
• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Plastic scraper
• Gasket scraper
• Serpentine belt tool with 14mm adapter (specialty)
• Trim clip remover
• Drain pan 2-gallon minimum
• Flashlight
• Paint marker
• Safety glasses
• Mechanic gloves

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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
• Timing cover sealant - Qty: 1
• Front crankshaft seal - Qty: 1
• Valve cover gasket set - Qty: 1
• Engine oil - Qty: As needed
• Engine coolant - Qty: As needed
• Serpentine drive belt - Qty: 1 if worn

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📋 Before You Begin

• Park your Civic on level ground, set the parking brake, and let the engine cool fully.
• Disconnect the negative battery cable using a 10mm socket.
• Raise the front of the vehicle with a floor jack rated 2-ton minimum and support it with jack stands rated 2-ton minimum.
• A timing chain keeps the crankshaft and camshafts synchronized so the valves and pistons move at the right time.
• If you only meant the outside accessory belt, that is the serpentine belt, not the timing belt.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm the Service Needed

• Use a flashlight to inspect the front of the engine.
• Your Civic does not have a rubber timing belt to replace.
• Only continue if you are servicing the internal timing chain, tensioner, guides, or front timing cover.
• No timing belt exists on this engine.

Step 2: Disconnect the Battery

• Use a 10mm socket and 3/8-inch drive ratchet to loosen the negative battery terminal.
• Remove the negative cable and position it away from the battery post.

Step 3: Raise and Support the Vehicle

• Use a floor jack rated 2-ton minimum to lift the front of your Civic at the approved front jacking point.
• Place jack stands rated 2-ton minimum under the approved support points.
• Gently lower the vehicle onto the stands and shake the vehicle lightly to confirm it is stable.

Step 4: Remove Splash Shields and Access Covers

• Use a trim clip remover to remove plastic clips from the lower splash shield.
• Use a 10mm socket and 3/8-inch drive ratchet to remove shield bolts.
• Set the splash shield aside.

Step 5: Remove the Serpentine Belt

• Use the serpentine belt tool with 14mm adapter to rotate the belt tensioner and release tension.
• Slide the belt off one smooth pulley, then slowly release the tensioner.
• Remove the belt from the remaining pulleys by hand.
• Take a routing photo first.

Step 6: Support the Engine

• Install the engine support bar across the upper body structure as directed by the tool instructions.
• Apply light upward support to the engine.
• Use a floor jack rated 2-ton minimum with a wood block under the oil pan only as backup support, not as the main support.

Step 7: Remove Engine Mount Components

• Use 14mm socket, 17mm socket, and 3/8-inch drive ratchet to remove the passenger-side engine mount brackets blocking the timing cover.
• Keep bolts organized by location.
• Reinstallation torque varies by mount fastener location, so use service data for the exact bolt position.

Step 8: Remove the Crankshaft Pulley Bolt

• Install the Honda crankshaft pulley holder tool into the crank pulley.
• Use a 19mm socket with a 1/2-inch drive breaker bar to loosen the crankshaft pulley bolt.
• The bolt is very tight. Keep the tool square so it does not slip.
• Remove the crankshaft pulley after the bolt is removed.

Step 9: Remove Valve Cover and Timing Cover

• Use a 10mm socket and 3/8-inch drive ratchet to remove valve cover bolts.
• Lift the valve cover off carefully.
• Use 10mm socket, 12mm socket, and 14mm socket to remove timing cover bolts.
• Use a plastic scraper to gently separate the cover. Do not gouge the aluminum sealing surface.

Step 10: Set Engine to Top Dead Center

• Use a 19mm socket and 1/2-inch drive breaker bar on the crankshaft bolt area to rotate the engine clockwise only.
• Align the crankshaft and camshaft timing marks to their correct top dead center positions.
• Use a paint marker to mark the chain and sprocket locations before removal.
• Top dead center means cylinder 1 is at the top of its compression stroke.

Step 11: Remove Chain Tensioner, Guides, and Chain

• Use a 10mm socket and 3/8-inch drive ratchet to remove the timing chain tensioner bolts.
• Use a 10mm socket or 12mm socket as needed to remove timing chain guide bolts.
• Remove the chain carefully without turning the crankshaft or camshafts.
• If any shaft moves, stop and realign timing marks before continuing.

Step 12: Install New Timing Chain Components

• Install the new timing chain guides using a 10mm socket or 12mm socket.
• Route the new timing chain kit over the crankshaft and camshaft sprockets with the timing marks aligned.
• Install the new timing chain tensioner using a 10mm socket.
• Release the tensioner only after the chain is fully seated and all timing marks are aligned.
• Torque timing chain guide/tensioner bolts to OEM specification for the exact bolt location.

Step 13: Verify Timing by Hand

• Use a 19mm socket and 1/2-inch drive breaker bar to rotate the crankshaft clockwise two full turns.
• Stop if you feel hard resistance. Do not force it.
• After two turns, recheck that the timing marks return to their correct positions.
• Hand-turning prevents costly mistakes.

Step 14: Clean and Reseal the Timing Cover

• Use a plastic scraper and gasket scraper to clean old sealant from the timing cover and engine block.
• Install the new front crankshaft seal.
• Apply timing cover sealant in the correct bead pattern around the cover sealing surface.
• Install the timing cover before the sealant skins over.
• Torque timing cover bolts to OEM specification by bolt size and location.

Step 15: Reinstall Valve Cover

• Install the new valve cover gasket set into the valve cover.
• Use a 10mm socket and 3/8-inch drive torque wrench to tighten valve cover bolts evenly.
• Torque valve cover bolts to OEM specification.

Step 16: Reinstall Crankshaft Pulley and Engine Mount

• Install the crankshaft pulley by hand.
• Use the Honda crankshaft pulley holder tool, 19mm socket, and 1/2-inch drive torque wrench to tighten the crankshaft pulley bolt.
• Torque crankshaft pulley bolt to OEM specification.
• Use 14mm socket, 17mm socket, and 3/8-inch drive torque wrench to reinstall engine mount components.
• Torque engine mount bolts to OEM specification for each bolt location.

Step 17: Reinstall Serpentine Belt and Covers

• Use the serpentine belt tool with 14mm adapter to move the tensioner and reinstall the serpentine belt.
• Use a flashlight to confirm the belt ribs are fully seated in every pulley groove.
• Use a 10mm socket and trim clip remover to reinstall the lower splash shield and covers.

Step 18: Reconnect Battery and Refill Fluids

• Use a 10mm socket to reconnect the negative battery cable.
• Check and top off engine oil if any was drained or lost.
• Check and top off engine coolant if any coolant hoses or components were disturbed.

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✅ After Repair

• Before starting, verify all tools are removed from the engine bay.
• Start your Civic and listen for abnormal rattling, knocking, or scraping.
• Let the engine idle while checking around the timing cover for oil leaks.
• Watch the serpentine belt from a safe distance to confirm it runs straight.
• If the check engine light comes on, scan for codes before driving.
• After a short test drive, recheck oil level, coolant level, and timing cover area for leaks.

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💰 DIY vs Shop Cost

Shop Cost: $1,200-$2,200 USD equivalent for timing chain service

DIY Cost: $250-$650 USD equivalent for parts and sealants

You Save: $950-$1,550 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour in the U.S. This repair takes a shop approximately 6-10 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.