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Old 12-22-2013, 10:01 PM   #1
forgotten93
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tapping sound coming from engine

there is a non constant tapping sound i think coming from one of my valves. i have brought it to Toyota and Subaru and they don't know what it is. the tapping comes and goes. i can only hear it at idle cause i have a exhaust and cant hear anything over it.
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Old 12-22-2013, 10:09 PM   #2
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i cant figure out how to post a video but i know how on fb so here u go
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Old 12-22-2013, 10:28 PM   #3
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Ask a mechanic to take a look at the flux capacitor. That's probably where the noise is coming from.
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Old 12-22-2013, 10:43 PM   #4
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Hi forgotten93 .....

It could be the HPFP (High Pressure Fuel Pump) trying to do it's "cricket" thing...??

I could be a normal sound that an engine makes ..??

I wouldn't worry about it .... unless it gets louder.

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Old 12-22-2013, 11:25 PM   #5
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i put a turbo on it and change the injectors and fuel pump and it still makes the noise
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Old 12-22-2013, 11:30 PM   #6
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Originally Posted by kALMIGHTY View Post
Ask a mechanic to take a look at the flux capacitor. That's probably where the noise is coming from.
Swing and a miss.
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Old 12-23-2013, 01:44 AM   #7
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Originally Posted by forgotten93 View Post
i put a turbo on it and change the injectors and fuel pump and it still makes the noise
A turbo .. ?? Did I miss something .. ??

With that "exhaust" of yours, it's a wonder you can hear anything ....

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Old 12-23-2013, 05:36 AM   #8
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Originally Posted by forgotten93 View Post
i put a turbo on it and change the injectors and fuel pump and it still makes the noise
These cars have 2 fuel pumps.... one is in the gas tank and another high pressure unit under the hood, which is know to make chirping/ticking noises sometimes.
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Old 12-23-2013, 05:51 AM   #9
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I had the same issue ... I took it back to the dealership and three days later I was driving a new FR-S. The dealership did not know what is was, but knew I would be a pain in the ass and figured a buy-back and replacement was in order.

Now I understand that it has something to do with the fuel pump and is normal.
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Old 12-23-2013, 07:56 AM   #10
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Can it chirp and tick at the same time like that and its when ever it want to, I had the dealer replace the one in the engine already but they replaced it with a louder chirping one
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Old 12-23-2013, 09:49 PM   #11
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Most likely the injectors. They are very loud at idle (particularly after market ones), but quiet up when you start moving. Completely normal.
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Old 12-23-2013, 09:54 PM   #12
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It happens when its warmed up too
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