Xzn31

I have a 2007 TL Type-S w/ 114k miles on it. Under medium-heavy acceleration, it will make RANDOM ticking/metallic clicking 3,000RPM and above, or above 30 MPH.

I cannot replicate it just revving in neutral, and I cannot replicate it if I tell the tip tronic to force it to stay in 1st gear.

The ticking/clicking is completely random, like a bad drummer learning how to play, does not increase with RPM/Speed until I reach my desired speed (70mph). However it does not do it if I accelerate lightly.

I had my valves done about 10k miles ago, so that problem is gone (used to have loud valves)

SharksBreath

iTrader: (33)

where is the sound coming from? sounds like maybe an exhaust leak, jpipe flex material worn away. how long does the sound last for when it starts?

Xzn31

I can't quite tell.. Engine bay? Maybe under? The sound is only present when I'm under medium - heavy acceleration (50%+ of throttle). It starts once I pass 30mph, or 2800rpm or so, then stops when I let off the gas. If I accelerate semi-quickly from 70-80mph, I'll hear it again.

justnspace

iTrader: (1)

Check spark plug number 5!

Xzn31

Can you elaborate on that?

justnspace

iTrader: (1)

quite often in Honda's the spark plug likes to eject.
the heads are aluminum; which is a soft metal.

most people hear a ticking noise before a spark plug ejects.
its usually cylinder # 5.

its the middle one closest to the radiator.
Check it to see if its not loose. if it is, tighten it.

gwiffer

iTrader: (7)

Check the torque on all of your spark plugs.

Xzn31

I'll take a look - but when I go through first gear 1000 - 6000 rpm (speed is relatively low), the noise cannot be recreated. Is that odd?

1black_seven

iTrader: (2)

If its not the plug I would check the motor mounts.

I had a similar issue, and the clicking went away after replace a broken mount.

swoosh

iTrader: (5)

check spark plugs and are there any other symptoms? loss in power/mpg?

how many miles on the car? I know the injectors are known to tick as well

Xzn31

I'm taking it to a shop today to have the pads and rotors replaced and I'll have them check it. It's not a constant ticking that follows the RPM, it sounds like a muted drum cymbal being hit at complete randomness that DOESNT follow the RPM, once I pass 3,000RPM or 3rd gear and higher. I CANNOT recreate it in first or second gear (speed of how fast I'm going I assume). Car has 114k on it. Power/mpg is still at the usual avg of 21-22 per fillup.

CV joint?

Xzn31

I found a thread here on acurazine that closely resembles what I have: except mine is all the time / moreso when everything is warmed up:

SYMPTOM
While driving under light acceleration, you hear an intermittent pinging, rattling, or squealing from the engine compartment. The noise can easily be mistaken for an engine ping or a spark knock. In some cases, the noise happens only during engine warm-up.

PROBABLE CAUSE
The intermediate shaft heat shield is loose in its mounting bushings.

CORRECTIVE ACTION
Replace the intermediate shaft heat shield and any specified nuts or gaskets.