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Author Topic: clicking noise sound about 6-7 times per second on load  (Read 19253 times)
crackerx
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« on: February 24, 2017, 12:59:45 AM »

please you can helpme with a advice
about a mechanical problem on my 1.8t 224hp

from yesterday, when the engine is on load from 3 or 4gear for example
from 3000 to 4500 rpm
a clicking noise sound about 6-7 times per second
but on the neutral this sound not apear,if i rev the engine in neutral from idle to max this sound not appear
only on load and only from 3500 rpm when turbo make pressure >600mb

i put the car on elevator, rev with 6gear to 0kmh to 200kmh no sound
i rev the car on neutral from 1000 rpm to max 6000rpm no sound
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KasperH
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« Reply #1 on: February 24, 2017, 02:12:43 AM »

Sounds like a transmission or power transfer problem?
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crackerx
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« Reply #2 on: February 24, 2017, 02:41:58 AM »

Sounds like a transmission or power transfer problem?

i do not know...i`am interested about all your opinions
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KasperH
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« Reply #3 on: February 24, 2017, 03:20:52 AM »

When I think about it it could also be wastegate chatter, does the car stutter when this noise appears?
« Last Edit: February 24, 2017, 06:52:41 AM by KasperH » Logged
crackerx
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« Reply #4 on: February 24, 2017, 03:53:48 AM »

When I think about it it could also be wastewater chatter, does the car stutter when this noise appears?

i do not understand what you mean "it could also be wastewater chatter"

but the car NOT stutter when this noise appears.acceleration is ok
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KasperH
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« Reply #5 on: February 24, 2017, 06:54:10 AM »

sorry autocorrect, i meant to say "wastegate"

can you post a log of a run? Smiley
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crackerx
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« Reply #6 on: February 24, 2017, 09:56:42 AM »

sorry autocorrect, i meant to say "wastegate"

can you post a log of a run? Smiley

shure , i have vcds

tellme what measuring blocks you want to log
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KasperH
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« Reply #7 on: February 24, 2017, 10:18:10 AM »

Me7logger please Smiley and just a typical log, just make sure that it at least have wastegate duty cycle.

But I mostly think it's transmission related.

Could you describe the sound more precisely?

Is at full load or part throttle and is it always at the same RPM in all gears or just one gear?

Do you have a aftermarket DV?
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crackerx
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« Reply #8 on: February 24, 2017, 10:49:31 AM »

Me7logger please Smiley and just a typical log, just make sure that it at least have wastegate duty cycle.

But I mostly think it's transmission related.

Could you describe the sound more precisely?

Is at full load or part throttle and is it always at the same RPM in all gears or just one gear?

Do you have a aftermarket DV?

DV is original

the sound is as "valve tapping" and appear only on engine load after 3000rpm to aprox 4500rpm , pronunced on 3th and 4th gear on load

another thing, probably important, is i rebulid my turbo 1000km ago with a original borg warner core and china aftermarket hotside of turbo with wastegate and actuator
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KasperH
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« Reply #9 on: February 24, 2017, 11:26:18 AM »

Then i would think it is your wastegate actuator that is bad, but that would also translate into some weird engine behavior.

So a log would confirm or deny my assumption Smiley
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TijnCU
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flying brick


« Reply #10 on: February 24, 2017, 12:46:16 PM »

Could be a cv joint is on the way out. That would only show under load. Most of the times this shows with sharp steering, but I have had cv joints click hard on acceleration before. Would be a speed dependant sound then, not rpm related.
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KasperH
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« Reply #11 on: February 24, 2017, 01:01:42 PM »

Could be a cv joint is on the way out.

I thought that too for some time too, but that would be a "constant" noise and get faster with more wheel speed, not only present within a RPM band Smiley
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crackerx
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« Reply #12 on: February 26, 2017, 04:29:49 AM »

Hear on youtube on the first seconds of movie
You must hear carefully
https://youtu.be/LoAqaRGJJxo
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KasperH
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« Reply #13 on: February 26, 2017, 05:08:08 AM »

Can't really hear much, have you checked if anything is loose on the engine/exhaust?
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DT
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« Reply #14 on: February 26, 2017, 06:45:36 AM »

Hear on youtube on the first seconds of movie
You must hear carefully
https://youtu.be/LoAqaRGJJxo
Wastegate!
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