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      03-19-2020, 07:28 PM   #1
AZ1
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Interesting train sound from engine.

Just that. What is it? Video below.
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      03-19-2020, 07:29 PM   #2
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      03-20-2020, 04:35 PM   #3
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Quote:
Originally Posted by AZ1 View Post
Are you talking about the ticking? Injectors are pretty loud on these cars.
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      03-20-2020, 06:37 PM   #4
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Quote:
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Quote:
Originally Posted by AZ1 View Post
Are you talking about the ticking? Injectors are pretty loud on these cars.

the puffing sound. In the video it sounds a bit like ticking but it definitely was more of a puff puff puff puff puff puff. It is in unison with the ticking
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      03-20-2020, 07:05 PM   #5
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Hard to tell. Boost leak and BOV flutter maybe?
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      03-20-2020, 07:49 PM   #6
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Sounds like the evap purge valve, goes away with a little blip of the throttle right? Harmless despite the noise
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      03-21-2020, 01:58 AM   #7
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Quote:
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Sounds like the evap purge valve, goes away with a little blip of the throttle right? Harmless despite the noise

Precisely. But then comes right back when idling for a couple seconds.

What is the evaporation purge valve doing to make this sound. Haven't heard it before.
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      Yesterday, 10:11 AM   #8
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Quote:
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Precisely. But then comes right back when idling for a couple seconds.

What is the evaporation purge valve doing to make this sound. Haven't heard it before.
I couldn't tell you to be honest, but I've had this on my current 135 and a 335 I used to own with no ill effects.

I believe it hangs off the intake manifold by the throttle body and would be a cheap replacement.
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