9th gen Civic valve adjustment - Check service manual or Honda website for service intervals.
Is a 105k mile valve adjustment required?
https://www.reddit.com/r/CivicSi/comments/at85pk/is_a_105k_mile_valve_adjustment_required/
"Yes, valve adjustments are necessary when an engine has a lot of miles on it. Over time and miles, the valve clearance will slowly move out of spec. Your engine will run rougher and gas mpg will go down."
"Yes you can totally do the job yourself, the only specialty tool you need is a valve gauge to measure the clearance. Then you just follow a pattern to do all the intake an exhaust sides.
However, this job requires knowledge and familiarity with your valves and clearances."
" Wrenches and feeler gauges are cheap. As long as your valve cover bolts come off easy it really is easy to do yourself. You might want to get one specialty tool (I had to get it for my 03 SI) for loosening/tightening the valves back up after using the proper feeler gauges. I managed to do this to both my S2000 and my EP3 SI.
Its something like this: https://www.amazon.com/10mm-Honda-Valve-Adjustment-Tool/dp/B004QK2APS "
9th Gen Civic Valve Adjustment PSA (1.8L) - DO IT (long read and writeup)!
https://www.9thgencivic.com/threads/valve-adjustment-psa-1-8l-do-it-long-read-and-writeup.227349/
This is for K24Z7: https://www.hocivic.com/valve_clearance_adjustment_k24z7_-1141.html
"Make sure the engine is stone cold before checking/adjusting the valve lash."
Valve Clearance Adjustment - Honda Civic 8th Gen: https://youtu.be/mMbR9lsGBbk?si=21x6LYR-QweRB9h4
"Guide is suitable for the following Honda owners:
Civic 2D/4D/5D (2006 - 2014) 1.8l (R18A)
FR-V (2007 - 2009) - 1.8l (R18A)
Accord (2008 -...) - 2.0l (R20A)
CR-V (2007 -...) - 2.0l (R20A)"
Honda Civic Valve Adjustment – Restore Performance & Silence Noise:
https://fatboysoffroad.com/honda-civic-valve-adjustment/
"Most Honda Civics, especially those with the robust K-series and D-series engines, benefit from a valve adjustment every 60,000 to 100,000 miles."
"Tools You’ll Need:
Socket Wrench Set: Including 10mm, 12mm, 17mm, 19mm sockets (sizes vary by model...).
Torque Wrench: Absolutely critical for proper reassembly, especially for valve cover bolts and spark plugs. Get one that covers the low torque ranges (e.g., 5-80 ft-lbs).
Feeler Gauge Set: This is your most important tool. You’ll need a set with both straight and bent blades to accurately measure valve clearances.
Valve Adjusting Wrench (Tappet Wrench): A specialized tool that combines a 10mm box-end wrench with a screwdriver slot for the adjusting screw. Essential for easily loosening the lock nut and turning the adjuster.
Flathead Screwdriver: For the valve adjusting screw if you don’t have the specialized wrench.
Spark Plug Socket: A 5/8″ or 13/16″ socket, usually with a rubber insert to protect the plug.
Extension Bars and Swivel Joints: Useful for reaching awkward bolts.
Breaker Bar: For turning stubborn bolts like the crank pulley bolt (if needed to rotate the engine manually).
Jack and Jack Stands: For safely lifting the front of the car if you need to access the crank pulley from below.
Wheel Chocks: For added safety when the car is elevated."
"Supplies, consumables, and Replacement Parts:
New Valve Cover Gasket: Always replace this. It’s cheap insurance against oil leaks.
Spark Plug Tube Seals: Often come with the valve cover gasket set. Replace if yours are old or brittle.
RTV Silicone Sealant (HondaBond or equivalent): Used at specific corners of the valve cover to prevent leaks.
Brake Cleaner or Degreaser: For cleaning the valve cover and cylinder head mating surfaces.
Service Manual: Your Honda Civic’s factory service manual is an invaluable resource for exact valve clearances, torque specifications, and firing order. Do not skip this!"
...
Is a 105k mile valve adjustment required?
https://www.reddit.com/r/CivicSi/comments/at85pk/is_a_105k_mile_valve_adjustment_required/
"Yes, valve adjustments are necessary when an engine has a lot of miles on it. Over time and miles, the valve clearance will slowly move out of spec. Your engine will run rougher and gas mpg will go down."
"Yes you can totally do the job yourself, the only specialty tool you need is a valve gauge to measure the clearance. Then you just follow a pattern to do all the intake an exhaust sides.
However, this job requires knowledge and familiarity with your valves and clearances."
" Wrenches and feeler gauges are cheap. As long as your valve cover bolts come off easy it really is easy to do yourself. You might want to get one specialty tool (I had to get it for my 03 SI) for loosening/tightening the valves back up after using the proper feeler gauges. I managed to do this to both my S2000 and my EP3 SI.
Its something like this: https://www.amazon.com/10mm-Honda-Valve-Adjustment-Tool/dp/B004QK2APS "
9th Gen Civic Valve Adjustment PSA (1.8L) - DO IT (long read and writeup)!
https://www.9thgencivic.com/threads/valve-adjustment-psa-1-8l-do-it-long-read-and-writeup.227349/
This is for K24Z7: https://www.hocivic.com/valve_clearance_adjustment_k24z7_-1141.html
"Make sure the engine is stone cold before checking/adjusting the valve lash."
Valve Clearance Adjustment - Honda Civic 8th Gen: https://youtu.be/mMbR9lsGBbk?si=21x6LYR-QweRB9h4
"Guide is suitable for the following Honda owners:
Civic 2D/4D/5D (2006 - 2014) 1.8l (R18A)
FR-V (2007 - 2009) - 1.8l (R18A)
Accord (2008 -...) - 2.0l (R20A)
CR-V (2007 -...) - 2.0l (R20A)"
How to Adjust Valves on Honda Civic:
Honda Civic Valve Adjustment – Restore Performance & Silence Noise:
https://fatboysoffroad.com/honda-civic-valve-adjustment/
"Most Honda Civics, especially those with the robust K-series and D-series engines, benefit from a valve adjustment every 60,000 to 100,000 miles."
"Tools You’ll Need:
Socket Wrench Set: Including 10mm, 12mm, 17mm, 19mm sockets (sizes vary by model...).
Torque Wrench: Absolutely critical for proper reassembly, especially for valve cover bolts and spark plugs. Get one that covers the low torque ranges (e.g., 5-80 ft-lbs).
Feeler Gauge Set: This is your most important tool. You’ll need a set with both straight and bent blades to accurately measure valve clearances.
Valve Adjusting Wrench (Tappet Wrench): A specialized tool that combines a 10mm box-end wrench with a screwdriver slot for the adjusting screw. Essential for easily loosening the lock nut and turning the adjuster.
Flathead Screwdriver: For the valve adjusting screw if you don’t have the specialized wrench.
Spark Plug Socket: A 5/8″ or 13/16″ socket, usually with a rubber insert to protect the plug.
Extension Bars and Swivel Joints: Useful for reaching awkward bolts.
Breaker Bar: For turning stubborn bolts like the crank pulley bolt (if needed to rotate the engine manually).
Jack and Jack Stands: For safely lifting the front of the car if you need to access the crank pulley from below.
Wheel Chocks: For added safety when the car is elevated."
"Supplies, consumables, and Replacement Parts:
New Valve Cover Gasket: Always replace this. It’s cheap insurance against oil leaks.
Spark Plug Tube Seals: Often come with the valve cover gasket set. Replace if yours are old or brittle.
RTV Silicone Sealant (HondaBond or equivalent): Used at specific corners of the valve cover to prevent leaks.
Brake Cleaner or Degreaser: For cleaning the valve cover and cylinder head mating surfaces.
Service Manual: Your Honda Civic’s factory service manual is an invaluable resource for exact valve clearances, torque specifications, and firing order. Do not skip this!"
...
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