Engine noise question
Thread Starter
Advanced
Joined: Jan 2006
Posts: 74
Likes: 4
From: Rockwall Texas
Engine noise question
I have the manual tranny with 800 miles on my C-7. To me, it sounds like I have a lot of weird engine/valve noise inside the car at idle with a warm engine. Is this normal for these vettes? I've never owned a late model one and I can't compare it to my 82'. I'm running 93 octane 100% gas.
Melting Slicks
Joined: Nov 2013
Posts: 2,016
Likes: 73
From: Texas
As you said, DI injectors are noisy as they operate at very high pressures. Don
Last edited by W88fixer; Jan 5, 2014 at 05:08 PM.
Racer
Joined: Oct 2013
Posts: 357
Likes: 0
From: Snohomish WA
Yes, totally normal. I voiced this concern about a month ago when I noticed the clicking sawing machine / diesel engine sound my car made. I received quite a few reassuring replies stating that this is totally expected from a DI engine.
I have since gotten used to it and it's actually started sounding like music to my ears.
I have since gotten used to it and it's actually started sounding like music to my ears.
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Racer
Joined: Dec 2004
Posts: 310
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I have the manual tranny with 800 miles on my C-7. To me, it sounds like I have a lot of weird engine/valve noise inside the car at idle with a warm engine. Is this normal for these vettes? I've never owned a late model one and I can't compare it to my 82'. I'm running 93 octane 100% gas.
Instructor
Joined: Jan 2014
Posts: 105
Likes: 0
Mine is noisy, but it comes from the A/C compressor. Most make noise, some louder than others.
It's noticeable at idle and low speed. Turn off the compressor, sound disappears.
Luxury cars actually have minature mufflers on the high pressure line out of the compressor in order to quiet this. Guess the Corvette folks thought we weren't the luxury type.
It's noticeable at idle and low speed. Turn off the compressor, sound disappears.
Luxury cars actually have minature mufflers on the high pressure line out of the compressor in order to quiet this. Guess the Corvette folks thought we weren't the luxury type.
Last edited by ahesq; Mar 12, 2014 at 05:51 PM. Reason: typo