S2000 Under The Hood S2000 Technical and Mechanical discussions.

air leak sound coming from engine

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Old 12-04-2008, 02:24 PM
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Default air leak sound coming from engine

Okay well yesterday I started noticing a weird sound coming from my motor, its like someone blowing into a straw kind of sound. I even took my coil packs off just to investigate a little and I turned the engine over with a breakover bar from the crank, and when i turn it, you can hear that sound when it turns over. I can seem to hear it a little better with the coils out. Does anyone have a clue what this could be?
Old 12-05-2008, 07:13 AM
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Mine always sounds like it's drawing air someplace, gets louder with the airbox lid off.
Old 12-05-2008, 08:10 AM
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Mine is much louder with the airbox lid off too. It's probably just the engine drawing air in.
Old 12-05-2008, 09:05 AM
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if its a new sound, and you didn't mess with the air intake, then check to make sufre nothing came loose
Old 12-05-2008, 09:35 AM
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Did a check engine light come on?
Old 12-05-2008, 09:37 AM
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Only reason i ask is because i just put in a X-brace and from too much force of trying to get the brace to fit i kind of broke off a little nipple from a little box where a vacuum line goes into and now there is a little suction noise and it kicked a check engine light as well....
Old 12-05-2008, 11:58 AM
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well I know its not the intake, but if I put my ear right up to the spark plug holes i can hear the air, it sounds like its just like blowing out somewhere, I also did a compression check today..the numbers were:

#1 #2 #3 #4
180 180 150 120

I'm thinking it is something serious like that b/c the CEL came on and started blinking, I immediately turned the car off..and when I came out to put a scan tool on it real quick the light was off again and hasnt turned back on.
Could this be bent valves?
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