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Old 03-27-2015, 09:50 AM   #1
Phillysubaru89
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Default Exhaust manifold?

So I've been having problems with a rough idle. It doesn't always do it, only on occasion. Recently my cars been making this tapping/knocking noise, seems like it's coming from driver side engine bay. The problem is that it doesn't always do it, so it's hard to pinpoint. It's more noticeable when the engine is cold. Could this be an exhaust manifold leak? I'm not sure because it's not a constant noise.
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Old 03-27-2015, 09:57 AM   #2
Loyale93
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tapping/knocking sounds more like valve clatter than a manifold leak. Exhaust leaks are fairly obvious sounds.

Open the hood, turn on the car. Stick your head in there and listen. Also take a video, as that will help us pinpoint the noise as well.
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Old 03-27-2015, 10:14 AM   #3
Phillysubaru89
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Quote:
Originally Posted by Loyale93 View Post
tapping/knocking sounds more like valve clatter than a manifold leak. Exhaust leaks are fairly obvious sounds.

Open the hood, turn on the car. Stick your head in there and listen. Also take a video, as that will help us pinpoint the noise as well.

Here's a video from when it first started....it's gotten louder and worse now


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Old 03-27-2015, 10:44 AM   #4
jon7009
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That... does not sound good. Can you film it from your engine bay? Audio is very quiet but it sounds like knocking.
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Old 03-27-2015, 11:05 AM   #5
Phillysubaru89
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I already had the short block replaced right after I bought my car...it had a bad rod knock. This is different though, it's not a constant thing, and the idle is rough. When I took it to subaru they said they didn't know what it was, the tech however was some young kid who probably had no idea what he was doing
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Old 03-27-2015, 02:34 PM   #6
Phillysubaru89
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Anyone else ever have a problem like this?
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Old 03-28-2015, 05:24 PM   #7
shanenayani
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You need to show it someone who knows what he is doing...
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Old 03-29-2015, 11:38 PM   #8
Phillysubaru89
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Yeah I took it to subaru on Saturday and they gave me a rental for now, should know by tomorrow what the problem is
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