engine

Lifter - Single

for 2021 Honda Accord 1.5L I4 Turbo · FWD

Editorial review:Chris Hackleman — Master Technician · 20+ years · Jeff Moore — Master Lexus & Toyota Mechanic · 20+ years

Difficulty

Advanced

Time

4.0 h

Tools

Steps

✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman & Jeff Moore — 20+ years each). Always follow the vehicle's factory service information and torque specs.

This procedure replaces a single hydraulic valve lifter on the 2018-2024 Honda Accord 1.5L turbo engine, requiring removal of the camshaft and rocker arm assembly to access the lifter.

Warnings

⚠️SAFETY-CRITICAL PROCEDURE: Incorrect camshaft installation or improper valve timing can cause catastrophic engine damage, piston-to-valve contact, and potential injury from component failure. If you are not experienced with camshaft removal and timing procedures, seek professional service.

⚠️Never rotate the crankshaft with the camshaft removed or timing chain disconnected. This will cause piston-to-valve contact and severe engine damage.

⚠️Engine must be completely cold before beginning work. Hot components can cause severe burns.

⚠The cam chain must be properly supported during camshaft removal to prevent it from falling into the timing cover. Dropping the chain requires timing cover removal to retrieve it.

⚠Rocker arm components must be reinstalled in their exact original positions. Keep all parts organized and labeled during disassembly.

⚠All rocker arm shaft bolts must be tightened evenly and in the correct sequence to prevent warping and oil leakage.

Tools required

Socket set (8mm-19mm)Essential

Torque wrench (10-50 Nm range)Essential

Cam chain holding tool or wireEssential

Plastic mallet

Magnetic pickup toolEssential

Engine support fixture or hoist

Dial indicator with magnetic base

Feeler gauge set

Clean lint-free shop towelsEssential

Parts organizer or labeled containersEssential

Parts

Hydraulic valve lifter × 1 — Use OEM Honda specification
Valve cover gasket × 1 — Use OEM Honda specification
Valve cover spark plug tube seals × 4 — Use OEM Honda specification
Rocker arm shaft seal washers × 8 — Use OEM Honda specification
Engine oil × 1 — Honda Genuine 0W-20

Fluids

Honda Genuine 0W-20 — 4 qt

Preparation

Ensure engine is completely cold to the touch
Disconnect negative battery cable and wait 3 minutes for airbag system to discharge
Remove engine cover by pulling upward on front and rear edges
Drain engine oil completely and reinstall drain plug
Remove air intake duct and air cleaner assembly
Disconnect ignition coil connectors and remove all four ignition coils
Label and photograph all vacuum hoses and electrical connections to valve cover area
Disconnect PCV hose, breather hose, and any vacuum lines attached to valve cover
Position cylinder #1 to Top Dead Center (TDC) on compression stroke by rotating crankshaft clockwise until timing marks align on crankshaft pulley and timing pointer, and camshaft lobes for cylinder #1 point outward
Mark the relationship between cam chain and camshaft sprocket with paint marker or permanent marker
Place clean shop towels around work area to catch any debris

Procedure

1
Remove valve cover
Remove the valve cover bolts in reverse of tightening sequence (working from outside to center). Carefully lift valve cover off cylinder head. If stuck, tap gently with plastic mallet on reinforced areas only. Remove and discard old valve cover gasket and spark plug tube seals.
2
Support cam chain and remove camshaft sprocket
Using wire or a cam chain holding tool, secure the cam chain to prevent it from falling into the timing cover. Remove the camshaft sprocket bolt (requires holding camshaft steady with wrench on hex section). Carefully slide camshaft sprocket off camshaft while maintaining chain tension with support wire. Do not allow chain to drop or lose position.
⚠If cam chain falls into timing cover, timing cover removal will be required. Keep constant tension on chain.
3
Remove rocker arm assembly
Loosen rocker arm shaft bolts in reverse sequence (work from outside bolts toward center bolts) in 2-3 passes, loosening each bolt 1/4 turn at a time to prevent warping. Once all bolts are loose, remove them completely. Carefully lift the entire rocker arm assembly straight up off the cylinder head. Note the locations of different length bolts.
⚠Do not pry on rocker arm assembly. If stuck, tap gently on shaft ends with plastic mallet.
4
Remove camshaft
With rocker arms removed, carefully lift the camshaft straight up and out of the cylinder head bearing journals. Keep camshaft horizontal during removal to prevent damage to bearing surfaces. Place camshaft on clean protected surface with journals facing up.
5
Identify and remove failed lifter
Identify which lifter requires replacement (typically the one showing wear, noise, or reduced valve clearance). Lifters sit in bores in the cylinder head directly under the rocker arms. Use magnetic pickup tool to carefully extract the failed lifter straight up from its bore. Note the lifter position and valve number for reference.
ℹ️Lifters may be difficult to remove if they have seized in the bore. Ensure lifter comes out completely without breaking.
6
Inspect lifter bore and prepare new lifter
Thoroughly clean the lifter bore with clean lint-free shop towel. Inspect bore for scoring, excessive wear, or damage. Bore should be smooth with no vertical scratches. Prime the new lifter by submerging in clean engine oil and manually pumping the plunger 10-15 times until resistance is felt (this removes air from hydraulic chamber). Coat new lifter exterior with clean engine oil.
7
Install new lifter
Carefully insert the primed and oiled new lifter into the bore, ensuring it slides in smoothly and sits fully down in its bore. Lifter should drop to bottom of bore under its own weight when properly installed. Verify lifter can rotate freely in bore.
8
Reinstall camshaft
Lubricate all camshaft bearing journals and cam lobes with clean engine oil. Carefully lower camshaft into cylinder head bearing journals, ensuring cam lobes align properly with valve stems. Rotate camshaft to align timing mark and sprocket mounting position with original TDC position. Verify camshaft rotates smoothly in bearings.
⚠Ensure no cam lobes are pressing down on valves during installation. Camshaft should sit evenly in all bearing journals.
9
Reinstall rocker arm assembly
Install new rocker arm shaft seal washers on all rocker arm shaft bolts. Apply clean engine oil to all rocker arm contact surfaces and shaft. Carefully position rocker arm assembly onto cylinder head, ensuring all rocker arms align with their respective valve stems and the assembly seats fully. Install rocker arm shaft bolts in their original positions. Tighten bolts evenly in sequence (center bolts first, then work outward) in 2-3 passes to final torque specification.
⚠️Rocker arm shaft bolts must be tightened evenly in correct sequence to prevent shaft warping and oil starvation to rocker arms.
Torque spec
Rocker Arm Shaft Bolts25 Nm (18 lb-ft)
10
Reinstall camshaft sprocket and verify timing
Remove cam chain support wire/tool and position chain onto camshaft sprocket, aligning paint marks made during disassembly. Slide sprocket onto camshaft, ensuring timing marks align correctly. Install camshaft sprocket bolt and tighten to specification. Verify engine is still at TDC position for cylinder #1 and all timing marks align correctly. Manually rotate crankshaft two complete revolutions clockwise and recheck timing marks align at TDC.
⚠️Incorrect cam timing will cause engine damage. Triple-check all timing marks before proceeding.
11
Install new valve cover gasket and reinstall valve cover
Clean valve cover and cylinder head mating surfaces thoroughly with lint-free shop towels. Ensure no old gasket material remains. Install new spark plug tube seals into valve cover. Position new valve cover gasket onto cylinder head (gasket has locating pins). Place valve cover onto cylinder head, ensuring gasket seats properly. Install valve cover bolts and tighten in correct sequence (center to outside pattern) to specified torque.
Torque spec
Cover Bolts15 Nm (11 lb-ft)
12
Reinstall ignition coils and accessories
Reinstall all four ignition coils and tighten bolts to specification. Reconnect ignition coil electrical connectors. Reconnect PCV hose, breather hose, and all vacuum lines to their original positions using reference photos. Reinstall air cleaner assembly and intake duct.
13
Refill engine oil and final checks
Fill engine with 4.0 quarts of Honda Genuine 0W-20 engine oil. Reconnect negative battery cable. Install engine cover. Double-check all connections, bolts, and hoses are properly installed. Verify no tools or shop towels remain in engine bay.

Reassembly

Always use new valve cover gasket, spark plug tube seals, and rocker arm shaft seal washers
All rocker arm components must return to their exact original positions
Rocker arm shaft bolts must be tightened in sequence from center outward in multiple passes
Verify camshaft timing marks align correctly at TDC after reassembly and after rotating engine two full revolutions
Apply clean engine oil to all moving parts during assembly

Verification

Start engine and verify no oil leaks from valve cover or rocker arm area
Engine should idle smoothly with no abnormal valve train noise or ticking
Allow engine to reach operating temperature and verify no leaks develop
Check engine oil level after running and top off if necessary
Road test vehicle and verify normal engine operation under load
Monitor for any check engine lights or unusual sounds during first 50 miles of operation
Recheck valve cover bolt torque after engine has fully cooled from first heat cycle

🔧Stuck on this lifter - single? Take it to The Diag Desk.A human with 20+ years in the bay answers about YOUR Honda within 24 hours — never AI. $25, and you're not charged unless you get an answer.Ask a tech →