Engine tapping sound - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

HondaCBR08RR · 10-13-2016, 10:56 PM

[ame="https://www.youtube.com/watch?v=JqgbFiToVoE"]Frs tapping sound - YouTube[/ame]

62k mile, no mods completely bone stock. The tapping sound is noticeable at 2000 rpm at the 0.20 mark. Side note the tapping occurs after warm up and noticeable when rpm comes up or down to 2000-3500 rpm. The tap is lightly noticeable during 4300-7000 rpm. I know it's hard to diagnose by video i would like to know what's your opinion on it. Ty

Ultramaroon · 10-13-2016, 10:58 PM

Sounds like a bad lifter.

humfrz · 10-13-2016, 11:55 PM

Yep, either a lifter with too much space or something else in the valve train.

Do you track your car .. ??

How long has it been making that sound .. ??

Back-in-the-day ..... with a 9/16" wrench, a screwdriver and a feeler gauge, we could have quieted that puppy down ......

NOW. look at this mess .......and that's just half of it ......

humfrz

HondaCBR08RR · 10-14-2016, 02:41 AM

Quote:

Originally Posted by humfrz

Yep, either a lifter with too much space or something else in the valve train.

Do you track your car .. ??

How long has it been making that sound .. ??

humfrz

The car is my daily driver never been track. Once in awhile I would go through the gears but never been in a race or track. Forgot to mention the car is a 6 speed automatic

The sound been like that for months.

How bad is this lifter problem? Should I continue to drive or take it to see a mechanic asap?

humfrz · 10-14-2016, 03:11 AM

Quote:

Originally Posted by HondaCBR08RR

The car is my daily driver never been track. Once in awhile I would go through the gears but never been in a race or track. Forgot to mention the car is a 6 speed automatic

The sound been like that for months.

How bad is this lifter problem? Should I continue to drive or take it to see a mechanic asap?

IF it is a lifter clearance problem, it's a pain to adjust the valve clearances. The cam bridges must be taken off to adjust the clearances which, MAY necessitate pulling the engine.

What I would do is get me a long screwdriver and place it around the engine compartment (with the soft end up to your ear) and see if you can isolate where the sound is coming from.

Then, I would take it into a dealer for an evaluation by their techs. Also, ask them if any necessary repair would be covered under warranty (it looks like you are close on that).

As far as driving it making that tapping sound, IF IT IS AN OUT OF TOLERANCE LIFTER, it shouldn't hurt the car ...... it's just not opening that one valve as far as it should be opened.

Keep us posted.

Hopefully others will be along with some more insight.

humfrz

Impureclient · 10-14-2016, 04:40 AM

It was a different engine but that video sounds exactly like a wrist pin failure I had. That engine died a horrible death soon afterward.

Ultramaroon · 10-14-2016, 02:46 PM

Quote:

Originally Posted by Impureclient

It was a different engine but that video sounds exactly like a wrist pin failure I had. That engine died a horrible death soon afterward.

So hard to tell but on a second listen, it's disconcerting to hear it come and go at different speeds. Sloppy valves don't do that. They tap all the time.

BRZnut · 10-14-2016, 08:06 PM

Didn't someone on here have a bad vacuum pump that made a sound like the lifters? But I remember it being louder than the sound I am hearing in the video.

If you do find the cause, please post back!!

Ultramaroon · 10-14-2016, 09:06 PM

Quote:

Originally Posted by BRZnut

Didn't someone on here have a bad vacuum pump that made a sound like the lifters? But I remember it being louder than the sound I am hearing in the video.

If you do find the cause, please post back!!

Those have a bright/harsh intermittent knock but yes, I remember someone posted a good recording of it.

humfrz · 10-14-2016, 09:32 PM

Quote:

Originally Posted by BRZnut

Didn't someone on here have a bad vacuum pump that made a sound like the lifters? But I remember it being louder than the sound I am hearing in the video.

If you do find the cause, please post back!!

@HondaCBR08RR .... now, that would be easier to check, as opposed to tearing the engine apart.

Maybe put your screwdriver and ear back that way and give a listen .. ??

humfrz

extrashaky · 10-14-2016, 09:42 PM

Quote:

Originally Posted by humfrz

What I would do is get me a long screwdriver and place it around the engine compartment (with the soft end up to your ear) and see if you can isolate where the sound is coming from.

Or you can pull the cushions out of the couch and root around under all the car seats to scrape together $4 for an actual mechanic's stethoscope, which has a better, longer probe and better earpieces than a screwdriver.

http://www.harborfreight.com/mechani...ope-69913.html

Ultramaroon · 10-14-2016, 10:14 PM

Quote:

Originally Posted by extrashaky

Or you can pull the cushions out of the couch and root around under all the car seats to scrape together $4 for an actual mechanic's stethoscope, which has a better, longer probe and better earpieces than a screwdriver.

http://www.harborfreight.com/mechani...ope-69913.html

That's an absolutely terrible idea.

humfrz · 10-14-2016, 11:14 PM

Quote:

Originally Posted by Ultramaroon

That's an absolutely terrible idea.

REALLY! Heck, anybody can find sounds with that thing ......

Besides, if you would get that thing even close to a FA20 engine ...... it would deafen you .......

humfrz

Ultramaroon · 10-14-2016, 11:39 PM

Quote:

Originally Posted by humfrz

REALLY! Heck, anybody can find sounds with that thing ......

Besides, if you would get that thing even close to a FA20 engine ...... it would deafen you .......

humfrz

Yeah, or you could snag a staple or a nail digging around in your couch.

10-13-2016, 10:56 PM	#1
HondaCBR08RR Junior Member Join Date: Nov 2015 Drives: Frs Location: LA Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 1 Post(s)	Engine tapping sound [ame="https://www.youtube.com/watch?v=JqgbFiToVoE"]Frs tapping sound - YouTube[/ame] 62k mile, no mods completely bone stock. The tapping sound is noticeable at 2000 rpm at the 0.20 mark. Side note the tapping occurs after warm up and noticeable when rpm comes up or down to 2000-3500 rpm. The tap is lightly noticeable during 4300-7000 rpm. I know it's hard to diagnose by video i would like to know what's your opinion on it. Ty

10-13-2016, 10:58 PM	#2
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,394 Thanks: 53,054 Thanked 37,230 Times in 19,309 Posts Mentioned: 1118 Post(s)	Sounds like a bad lifter. __________________ service manuals

10-13-2016, 11:55 PM	#3
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,436 Thanks: 29,833 Thanked 32,866 Times in 16,849 Posts Mentioned: 717 Post(s)	Yep, either a lifter with too much space or something else in the valve train. Do you track your car .. ?? How long has it been making that sound .. ?? Back-in-the-day ..... with a 9/16" wrench, a screwdriver and a feeler gauge, we could have quieted that puppy down ...... NOW. look at this mess .......and that's just half of it ...... humfrz Attached Images

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10-14-2016, 04:40 AM	#6
Impureclient Banned Join Date: May 2015 Drives: 2015 FR-S Location: NPR, Florida Posts: 2,404 Thanks: 1,802 Thanked 2,903 Times in 1,282 Posts Mentioned: 25 Post(s)	It was a different engine but that video sounds exactly like a wrist pin failure I had. That engine died a horrible death soon afterward.

10-14-2016, 08:06 PM	#8
BRZnut Senior Member Join Date: Oct 2012 Drives: BRZ DGM Limited Location: USA Posts: 1,237 Thanks: 5 Thanked 431 Times in 250 Posts Mentioned: 8 Post(s)	Didn't someone on here have a bad vacuum pump that made a sound like the lifters? But I remember it being louder than the sound I am hearing in the video. If you do find the cause, please post back!!

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