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#1
09-17-2002, 07:13 PM
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Loud buzzing exhast note?
I can't figure out why my exhast is making this weird buzzing noise. When I'm driving and I punch the gas, I get the sound. If I let it rev all the way up, the sound disappers around 3800 rpm and comes back at about 5200 rpm. It happens a lot more when the engine is cold. I have I/H/E and a high-flow cat (basically just a straight through resonator). Does anyone have any suggestions? The only thing I can think of is my cheap muffler (magna-flow).
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#3
09-17-2002, 10:36 PM
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Sounds like a loose weld to me. I had the same problem in my CRX and it was a broken weld around my resonator.
Graydon
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#4
09-18-2002, 12:38 AM
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you might also want to check that it's not rattling off the heat sheild.. when ya first start it up it'll shake a bit and by some off chance it might be hittin it somewhere..
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#5
09-18-2002, 01:11 AM
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True that. My A'pexi WS system I got recently seems to be vibrating up on I think it's the hangers when I'm stopped at a light, or just sitting at idle.
__________________
Silver '00 Civic EJ6 Coupe PureHonda original member since Feb. 2000 D-series revolution For pics of my baby, click here! All rights reserved... All BITERS served! "The last time you had THIS much fun driving a car, it cost a quarter, and gyrated in front of the supermarket." i have yet to see any well done imports around here. most are road toilets driven by some high school punk -Drift hessemer69 on AIM
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#6
09-18-2002, 05:57 PM
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I'm sure it has something to do with the actual exhast flow and not a loose rattling. Is it possible that it's my exhast (header) gasket? If not, I can only think of two other places where the actual exhast system can be taken apart - before and after the high flow cat. Now that I think of it though, I think the sound first started when I got my header. Is it possible that a damaged header gasket would cause this kind of sound?
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#8
09-20-2002, 03:47 PM
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I had a resonator, but I took it out.
 As soon as I did, it was a lot more responcive. It sounds more like hockey cards taped to the forks of a bicycle so that they flap against the spokes. Like something is rattling back and forth against the inside of the exhast. If this is resonance, will a different muffler solve the problem (I don't want a resonator)?
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#9
09-20-2002, 08:09 PM
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Do you still have your cat? or a test pipe?
Mine does the same thing and it started when i put a test pipe in it.
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#10
09-21-2002, 01:13 AM
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i think it's your exhaust. my friend has a magnaflow on his integra and the thing sounds like crap it sounds just like baseball cards attached to the rims of a bike. i know another kid that has one on his 89 accord, but it doesnt sound that bad now that i think about it... you aren't running your stock pipes up to the muffler are you?
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 Empty Pockets Racing Member #1
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#11
09-22-2002, 03:27 PM
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Nope, 1 1/4 or 1 1/2. I can't remember. It's just mandrel bend exhast shop tubing.
I have a high-flow cat. It is competely straight through. So yeah I guess it is a test pipe with little holes on the inside. I think mine started making the sound when I took out the resonator that I had the exhast shop put in the piping. Now I'm thinking it's just the damn magnaflow muffler.
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