I paid the main dealer around £100 to check and adjust mine soon after I bought it. 2007. Was below 70k miles. I have a Honda service schedule that says do it every 62.5k miles. I read the tighter the valves get, the quieter they get. It ran the same after adjustment but gave peace on mind.

 

I did an adjustment at maybe 130k miles--made no difference at all. Same MPG, same sound, same power. Felt like I wasted my time, honestly.

K-series engines aren't like the old B-series in the first-gen CR-Vs where they tightened up over time. The K-series valves will get looser. Honda recommends adjusting them if they appear to be noisy, or at (I think?) 100k miles.

 

I did an adjustment at maybe 130k miles--made no difference at all. Same MPG, same sound, same power. Felt like I wasted my time, honestly.

K-series engines aren't like the old B-series in the first-gen CR-Vs where they tightened up over time. The K-series valves will get looser. Honda recommends adjusting them if they appear to be noisy, or at (I think?) 100k miles.

Getting the valves adjusted isn't about improving your MPGs. It's about preventing having to replace your engine. Overtime /mileage the exhaust valve lash clearances get tighter, a point is reached where the valve don't fully close and you end up with burned valves and valve seats. The resulting repair bill is something you don't want to experience. When they check / adjust the valves they hopefully inspected the timing chain to see if it's in good shape and not worn.

 

Even 2020 CR-Vs have manual valve adjustments. I looked it up sometime last year out of curiosity.

 

All Honda engines use solid lifters. Honda says to check the clearance at 100,000 miles; however, the dealership up here do the newer Hondas at 140,000 to 150,000 miles. My service center just does it at 100,000 when they change the plugs since they have to pull the plugs anyways.

Depending on the engine, some Honda engines need it more than others -- and depending on how you drive it (driving at higher engine revolutions on a daily basis etc). Doing it at every plug change is a good rule of thumb.

One thing is that, even on the newer K24s or L15s..., the exhaust valves can get tighter and the intake valves can loosen -- which will make the valvetrain noisy (as Honda says).

Doing the valve adjustment will make the engine run smoother and restore lost horsepower -- according to ASE certified technicians.

 

EricTheCarGuy on youtube just did a video on this topic.

"Honda K Series Fail, What Went Wrong?"

 

EricTheCarGuy on youtube just did a video on this topic.

"Honda K Series Fail, What Went Wrong?"

Yep, watched it yesterday. He explains it in a way that makes sense...with the broken parts to prove it.

 

I saw that, he is a favorite for me. Just wondering what other crv owners thought. I guess will have a Honda specialist adjust the valves

 

How many of you go to the dealership to adjust the valves vs independent shop? ... or how many do your own clearance check/adjustment?

 

I do it myself. Not really much to it. I highly recommend that you have it done. It's not designed to necessarily improve performance or gas mileage. It's maintenance item that insures reliability of the engine. Like changing the oil

 

... it does improve performance as well Here's why: when the valves are too tight or too loose, you lose compression because the valves either stay open too long or not long enough. More compression = more power. You 'may' also get better gas mileage as well since the engine is operating as intended. It will also run cooler.

 

hondas have never had lifters, they are all overhead cam. Your CRV needs a valve lash adjustment but only if they get noisy....which might not happen for hundreds of thousands of miles.

 

I do mine every 30K. Of course solid lifters need adjusting. The engine probably has a bit louder ticking sound because the gap is a bit larger then it should be. You may not notice a performance difference, generally speaking. I bet it doesn't quite climb hills as well as it would with the proper gap.

 

Every Honda I have owned for the past 35 years has had the valves adjusted at 65,000 - 80,000 miles and every one of them had some tight exhaust valve clearances which burns the valves eventually. A slightly noisy valve is a happy valve. Cheaping out will save in the short term, but cost big in the long term.

 

I just adjusted mine (2011), three exhaust valves were slightly tight (maybe 2-3 thousandths) so it was probably worth doing. The spark plugs could have been put back in since they looked so good but I already had new ones.
The CRV has been on Mobil1 since about 500 miles and the engine is clean inside!

 

How often should it be done?
[/QUOTE]
Honda recommends every 100,000 miles. Can be done more often if you wish.

 

Just hit 100000 miles on 2008 crv.
Giving to granddaughter so we did 100000 mi check up and did valves.

 

It’s an interesting discussion, my 2005 has 120,000 miles and runs fine, do all maintenance and service myself. For some time now I’ve wondered whether I should adjust the valves. As has been said in the forum Honda recomends it should be done when they become noisy; however this a thing of perception, what may seem noisy to someone may not be to another. How noisy is noisy?