The Honda K24 is one of the most respected four-cylinder engines ever built - commonly seen in the Accord (2003+), CR-V, TSX, and Element. It routinely passes 250,000 miles, but a handful of small issues come up often enough to know about.
The K24 is among the most reliable engines on the road. Most failures trace back to skipped valve adjustments or neglected oil changes - not design flaws.
The VTEC solenoid gasket and oil pressure switch are notorious for slow leaks. Watch for oil dripping near the front of the head. Cheap fix, easy DIY.
Run free diagnosis →The K24 uses solid valve lash (no hydraulic lifters) and requires inspection every 100K-110K miles. Skipped adjustments cause ticking, eventually burnt valves.
Run free diagnosis →Front and rear motor mounts wear by 100K-150K miles, causing thumping during shifts and vibration at idle. Common, easy to diagnose.
Run free diagnosis →The K24 is an interference engine with a cam chain (not a belt). Cam chain tensioner rattle on cold start is a warning sign - address before failure.
View P0341 Diagnosis →Some high-mileage K24s consume up to a quart per 3,000-5,000 miles. Not a defect, just normal aging on cars near 200K miles.
Run free diagnosis →Rubber radiator hoses harden with age. Plan to replace upper and lower hoses around year 10-12 to prevent stranded coolant leaks.
Run free diagnosis →Run a free AI diagnosis tailored to your exact Honda. Get the most likely cause and repair estimate in under 30 seconds.
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Any K24 with no valve-adjustment record past 110K miles - budget for the inspection at first oil change.
2008-2012 Accord K24Z3, 2007-2011 CR-V K24Z6, and 2004-2008 TSX (K24A2) are widely considered the strongest K24 variants.
Plan for around $300-$500 every 100K miles for a valve adjustment plus motor mounts and a VTEC switch refresh. Total lifetime non-routine repair cost on a well-maintained K24 typically stays under $2,500.
Codes that show up most often on K24 engines.
A maintained K24 routinely passes 250,000 miles, with many examples reaching 350K+. Oil changes and valve adjustments are the keys.
Yes - the K24 is interference. The cam chain rarely fails, but tensioner rattle on cold start should not be ignored.
Honda recommends inspection every 100K-110K miles, but every 60K-80K is safer if you hear ticking or have driven the engine hard.
Almost always the VTEC solenoid gasket or oil pressure switch - a $20 part and a 30-minute job.
Different goals. K24 makes more torque and is the better daily driver. K20 revs harder and is the enthusiast pick. Both are bulletproof.