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Discussion Starter #1
I've spent a long time reading posts, trying different oil additives, and getting frustrated at honda. Could not get the startup actuator rattle to quiet in my accord. Would start it cold and I'd get a 1 second rattle every time if the car was sitting for more than 1-2 hrs.

I talked to a Honda specialist (not from a dealership). He told me to try a higher weight oil, that they've had success with that. I went from Mobil one 0w -20 advanced fuel economy to Mobil one 5w-20 high mileage. Plus I added half a quart Lucas synthetic oil stabilizer (not sure if I needed to do that, will try it without next time and update). Started the car hrs after the oil change and absolutely NO SOUND! car runs just as smooth and no decrease in gas mileage.

Mobil one high mileage is thicker than others of the same viscosity. The logic that thinner oil will be pushed faster to the chain makes sense, but it's not sound. Thicker oil builds maintains a higher oil pressure around the chain, thus resulting no more dry starts.

Time will tell if this remedy lasts. I have 97k on my accord. Results may vary based upon the wear already on your chain. I'm starting it in 45 degree weather so not sure what it'll do in colder temps. Will update.

If you're wrestling with this, try it! At worst you'll have wasted $25 on a 5 qt jug.
 

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Don't be adding Lucas to these engines. That is literally 110 weight.
110!!!

Besides the fact that you need the oil up to to the cam actuator SOONER. Lower viscosity makes it happen sooner.
 

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Discussion Starter #3
I should have specified, it's the pure synthetic stuff. Much lighter than the high mileage oil stabilizer. Also only added a half a qt if that.
If the viscosity is too thick for these engines, you'll know right away. Idle will turn rough and it'll lose power.

Waboom, your logic would make sense and that's why I initially went to the 0w20 advanced fuel which is thinner than standard M1. The thinner oil made the rattle louder and longer.
The vtc issue is that oil isn't held on the chain. Doesn't matter how thin the oil, it's not going to get there fast enough. So go the other way. Heavier= better maintained oil pressure and hopefully a thicker base sitting on the chain itself.
 

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I admire your enthusiasm, but from everything I have read... thicker oil will have a bad effect on the variable valve timing.
 

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Discussion Starter #5
Hmm, haven't noticed any difference in performance. Got any links to info on that, particularly for this engine? Obviously wouldn't want to eliminate a sound only to create a larger issue.
 

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Dsclmr:DIY @ YourOwnRisks
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I've spent a long time reading posts, trying different oil additives, and getting frustrated at honda. Could not get the startup actuator rattle to quiet in my accord. Would start it cold and I'd get a 1 second rattle every time if the car was sitting for more than 1-2 hrs.

I talked to a Honda specialist (not from a dealership). He told me to try a higher weight oil, that they've had success with that. I went from Mobil one 0w -20 advanced fuel economy to Mobil one 5w-20 high mileage. Plus I added half a quart Lucas synthetic oil stabilizer (not sure if I needed to do that, will try it without next time and update). Started the car hrs after the oil change and absolutely NO SOUND! car runs just as smooth and no decrease in gas mileage.

Mobil one high mileage is thicker than others of the same viscosity. The logic that thinner oil will be pushed faster to the chain makes sense, but it's not sound. Thicker oil builds maintains a higher oil pressure around the chain, thus resulting no more dry starts.

Time will tell if this remedy lasts. I have 97k on my accord. Results may vary based upon the wear already on your chain. I'm starting it in 45 degree weather so not sure what it'll do in colder temps. Will update.

If you're wrestling with this, try it! At worst you'll have wasted $25 on a 5 qt jug.
I've been going with higher viscosity route as well, and it's a lot smoother in operation, and actually getting more responsive with the gas pedal. It is true that thinner oil will get to places quicker, but the engine started up dry before oil gets to it; where higher viscosity is constantly retainining the coating of lubrication at dry start. I don't have to mean to do the scientific tests, but to me a little higher viscosity will protect the engine better from bone dry start in every morning. It seems the thin oil produces a lot rattles in the engine.
 

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Don't go crazy with thicker weight oil. The VTEC engine was designed around the thinner weight oils and I never assume I know more than the Honda engineers..keep in mind, this is a manufacturers defect and until Honda decides to do a recall, these issues are still going to be out there.

FWIW, my GFs 14' CR-V had the acuator work done by a well known Honda dealer...and every once in a while, it still does a slight rattle, but nothing close to what it was doing before.

Here's the rub: if Honda finds out you went outside the oil spec...who knows if they'll honor any of these engines, should a recall happen?
I've documented every single oil change on her CR-V for that reason alone.
 

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Discussion Starter #8 (Edited)
Well, after a few days the rattle came back and sounds exactly the same. Makes me think it was just the fact that the weather was a bit warmer. Switched back to 0-20 today (though I did switch to m1 high mileage as it's thicker than advanced fuel) since there's no point in going away from spec of there's absolutely no benefit.

What I want to know is if this issue can actually cause chain stretch or mess up timing (like some claim) in a vehicle where I'm changing oil every 5k with m1 full synthetic and babying the thing. I feel like the the only engines it's damaged have been those that were beat to hell.
Or If continue regular care, will the noise get worse?

Thoughts or experiences, with 9th Feb accord in particular?
 

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We need to somehow get Honda's head office's attention. We need to flood them with reports of this VTC actuator affecting 9th gen accords so they can get a TSB on it
 

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Discussion Starter #12
We need to somehow get Honda's head office's attention. We need to flood them with reports of this VTC actuator affecting 9th gen accords so they can get a TSB on it
I'd absolutely be willing to write a letter. Would have to be a vehicle wide recall for us who are outside of warranty. And they'd have to include 08-2016 accord and cr v though lol. And that's a whole LOT of dough considering the job.

Like I said though, I'd be willing to put out a letter or phone calls. I've heard of people getting half off the job.

Yea that one has been around for awhile. Thing is, even that tsb was flawed because at the time it was issued, all accords were out of warranty AND the updated part turned out to be faulty. They released a second part # in 2017. Haven't heard much about it.
The point is, Honda should be covering this as a recall for all vehicles affected, not a tsb bulletin informing dealerships how to do a $1000 repair and charge it to the customer.

That TSB is for accords from 2008 to 2012 which is Gen 8. My accord is a 2014, so the dealership wouldn't accept it
Same. Mine is a 2013. Different engine. Same issue.
 

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The engines on accords from 2013-2017(9th gen) are K24W and engines on 2008-2012(8th gen) are K24Z. Honestly, Honda should have this TSB(and a recall) made on ALL their K24 engines.
And....they should have extended their tranny warranty on the the 6 gens to the 2002 Accord, also.
But they did not.
All about lawyers...money, etc.
 

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Figured I'd post my update on this from another thread:

Thought I'd update everyone. Dealer reproduced and diagnosed to be bad VTC actuator. Good news is Honda covered most of the replacement even though it's out of warranty. Before they started with the replacement he told me they recommended timing chain replacement, tensioner and gasket/seals. Said in the other ones of these they've done, they've seen the chain is stretched out. They think as a result of some low oil issues. So once they got in there sure enough the chain was stretched out, they showed me videos/pics. The tensioner was fully extended and sure enough he could push the chain down or pull it up about 1/2 to 1 inch. Not sure when and if that would have caused a problem, but since they were basically there anyways to do the VTC actuator replacement and a lot of the labor was already covered, I said go ahead.

Good news is the noise is now gone, hopefully it lasts.
 

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Discussion Starter #19
Is there a form for Canadians or do we both use the same one? In any case I sent a one.
Honda Canada

Scroll down to the "email us" tab. It may seem pointless, but if we get enough people contacting them over the same issue maybe we can change something

Figured I'd post my update on this from another thread:

Thought I'd update everyone. Dealer reproduced and diagnosed to be bad VTC actuator. Good news is Honda covered most of the replacement even though it's out of warranty. Before they started with the replacement he told me they recommended timing chain replacement, tensioner and gasket/seals. Said in the other ones of these they've done, they've seen the chain is stretched out. They think as a result of some low oil issues. So once they got in there sure enough the chain was stretched out, they showed me videos/pics. The tensioner was fully extended and sure enough he could push the chain down or pull it up about 1/2 to 1 inch. Not sure when and if that would have caused a problem, but since they were basically there anyways to do the VTC actuator replacement and a lot of the labor was already covered, I said go ahead.

Good news is the noise is now gone, hopefully it lasts.
How many miles did you have on the accord when they replaced it? Any idea how long it had been rattling before replacement? Did you have any other rrattling aside from the initial 1 second rattle on startup? Just want to know how long that took for that kind of wear and where mine is at.

Yea it's worth it to do all that when they're in there. an extra $200-300 through my dealership ($1000 total)

One other question: had you been losing oil between changes? Wondering what they meant by "low oil". As in low oil in the engine or no oil on the chain.
 

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How many miles did you have on the accord when they replaced it? Any idea how long it had been rattling before replacement? Did you have any other rrattling aside from the initial 1 second rattle on startup? Just want to know how long that took for that kind of wear and where mine is at.

Yea it's worth it to do all that when they're in there. an extra $200-300 through my dealership ($1000 total)

One other question: had you been losing oil between changes? Wondering what they meant by "low oil". As in low oil in the engine or no oil on the chain.
It's a '13 EX-L I4 with about 88k. I would say it had been rattling for 2-3 months, maybe 3-4k miles. I had a couple small rattles here and there in the console and the dash(but not engine related). Probably not related but since getting this fixed I haven't heard anything, but some of those were temperature dependent.

I have another thread here where I can dig it up if you can't find it, but about 10k ago, maybe 15k I started to lose oil slowly(before that I wouldn't lose a drop) and I saw build-up on the bottom of the oil pan. Dealership diagnosed that the timing chain cover was leaking and sealed it up. Much better since then.

I wasn't totally clear if they were tying the timing chain stretch to a VTC issue or my oil loss issue, but either way it was definitely stretched from what they showed me.
 
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