Fluttery sound from engine - 2017 Touring AWD

I hope is not a failed cam as described on TSB 18-147. Download the PDF from the link below which has a sound link embedded. See if it sounds like it.

https://www.nhtsa.gov/vehicle/2018/HONDA/CR-V/SUV/FWD#manufacturerCommunications

Service Bulletin - Under certain circumstances, the vehicle may experience driveability issues..... or a whirling noise coming from the engine compartment.

Here is another link to the PDF file for TBS 18-147
https://drive.google.com/file/d/1ax...a6mCA7GOMiNWKNYJOZVfr7n33-2sEh7_hyCZL88tZ0f5c

Thanks for the info on TSB 18-147. I haven't had driveability problems, and the "regular" engine noise when driving at above about 12 mph drowns it out, so I *think* the cylinders are firing correctly, but I'm not an automotive tech or engineer... we'll see! (Trying to keep a good attitude.)

ARFunk said:

Thanks for the info on TSB 18-147. I haven't had driveability problems, and the "regular" engine noise when driving at above about 12 mph drowns it out, so I *think* the cylinders are firing correctly, but I'm not an automotive tech or engineer... we'll see! (Trying to keep a good attitude.)

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Did you have any oil dilution prior to this? Also how many miles do you have on you CRV?

ARFunk said:

Thanks for the info on TSB 18-147. I haven't had driveability problems, and the "regular" engine noise when driving at above about 12 mph drowns it out, so I *think* the cylinders are firing correctly, but I'm not an automotive tech or engineer... we'll see! (Trying to keep a good attitude.)

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Please let us know what they come up with. I for one would be interested. Good luck.

ARFunk said:

Oh, and I asked about the replacement shifter button and was told they only replace them when they fail... so my service advisor is getting the price of the part, and if it isn't ridiculously expensive I'll buy one so I have a spare stashed in my glove box.

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They should replace the button even if it's just loose, it shouldn't need to fail first. My dealer replaced ours on our 2017, no questions asked, they just took care of it.

rd082298 said:

Did you have any oil dilution prior to this? Also how many miles do you have on you CRV?

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I haven't noticed oil dilution, but I haven't checked for it all that much... possibly a mistake. And I have a little over 13,000 miles – my commute is only 1/2–mile each way, and when the weather is good and I don't have to be in before 6 AM (which is unfortunately quite rare) I walk.

And I'll definitely report back on whatever it turns out to be.

Replaced Cylinder Head, Turbo, Timing Chain

From service report: "Cams were binding inside head and had stretched timing chain... chain was loose... stripped 2 side tubo bolts, tried to remove but broken inside turbo housing and not able to drill out."

They also found "a/c line leaking oil. both suction and discharge lines were completely soaked in oil where clamp fitting were not clamped tight enough. also system overcharged by .21 kg." "replace both suction and discharge lines and destin bag." (Anyone know what a destin bag is?)

ARFunk said:

From service report: "Cams were binding inside head and had stretched timing chain... chain was loose... stripped 2 side tubo bolts, tried to remove but broken inside turbo housing and not able to drill out."

They also found "a/c line leaking oil. both suction and discharge lines were completely soaked in oil where clamp fitting were not clamped tight enough. also system overcharged by .21 kg." "replace both suction and discharge lines and destin bag." (Anyone know what a destin bag is?)

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Sorry to hear that. Looks like another case of cam failure; TSB 18-147 likely caused by poor lubrication / oil dilution.

Destin bag??? Could it have been desiccant?

Yes, the CRV has a replaceable desiccant bag that fits in the receiver / drier. Replace whenever you open the A/C system

TEXASCRVs said:

Sorry to hear that. Looks like another case of cam failure; TSB 18-147 likely caused by poor lubrication / oil dilution.

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And since I live in Georgia, their "fix" for oil dilution isn't available to me.

ARFunk said:

And since I live in Georgia, their "fix" for oil dilution isn't available to me.

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I would ask the dealer for the "fix" anyway and see if Honda will apply it now. The "fix" has not worked for many but I can't understand why they do not apply it to all, if nothing else just for PR reasons. It takes .7 hours of labor and 3.5 quarts of oil. IMO they would be better off spending the money and avoiding the negative PR that it causes. They obviously don't care as long as sales remain high but the issue may snowball. I just visited the Honda USA Facebook site and there are many complaining there as well.

I asked about the "fix" – since the dealer and I are in Georgia, it's not an option. Hadn't even thought of Facebook... just visited and left a short post about this.

ARFunk said:

I asked about the "fix" – since the dealer and I are in Georgia, it's not an option. Hadn't even thought of Facebook... just visited and left a short post about this.

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Might want to consider joining these groups also.
https://www.facebook.com/groups/201...Owners-Group-North-America--1369291403116406/
https://www.facebook.com/groups/602980600050747/

Sorry to hear about your problem..

With only a half mile commute your engine never gets up to temp to burn off any diluted gasoline.

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