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factors contributing to engine noise

  #1  
Old 02-06-2009, 10:16 AM
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Default factors contributing to engine noise

Hey ppl,

I am a newbie in terms of engine and its internals. I think that when I start up my engine ( and also while driving) the engine is a bit loud as compared to what I have seen in other cars. I was wondering about what are the factors which contribute to the noise so that I could have them checked up from a mechanic. I recently had new spark plugs (NGK iridium) and that helped but only a little bit. I also have a new air filter in it.

It would be great if someone could please throw some light on it.

99 Honda accord EX sedan

Thanks

Seth
 
  #2  
Old 02-06-2009, 10:49 AM
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exhaust leak? do you have a SRI installed?
 
  #3  
Old 02-06-2009, 10:53 AM
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thanks for your reply but I am really not sure what an SRI is. Please excuse my ignorance. It would be great if you could please elaborate.

Thanks again

Seth
 
  #4  
Old 02-06-2009, 11:17 AM
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Ticking lifters on valves usually causes the most noise. Kinda sounds like a "clack clack clack" from the engine bay...

A valve adjustment may do you good.
 
  #5  
Old 02-06-2009, 11:26 AM
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Thanks finch13 for your reply. Ill make sure to get the valves checked tomorrow itself.
 
  #6  
Old 02-06-2009, 11:31 AM
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SRI = short-ram intake; in place of the stock air filter & air intake duct.

You have to give us a little better description of the kind of noise. Ticking like Finch says, or maybe an exhaust leak? Or maybe growling noise from a bad wheel bearing? The possibilities are pretty endless until you give us a clue.

Does it change with engine RPM? Does it change with load (gas pedal)?
Does it change with road speed? Does it change with steering?
 
  #7  
Old 02-06-2009, 11:52 AM
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Thanks for your reply Jim.

1st. The engine noise is "clack clack .." in the morning when I accelerate the car. If I warm it up for like 15 mns and then drive the sound does not come. But if I dont warm it up and drive right away it does come. Someone told me that it is normal in automatic cars specially in winters

2nd. After the car warms up there is no other sound except for the normal engine one. WHat I meant was that when the car is idle the normal noise of the engine is loud as compared to the other cars which generally dont make the driver feel that the car is even started. I was under the impression that when the car is idle the engine should make very less sound which is no where the case with me.

As per your questions, the sound does increase when I accelerate the car to higher speeds.

I hope this helps

Seth
 
  #8  
Old 02-06-2009, 01:37 PM
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Ticking usually gets worse when cold compared to a warm engine. Pop the hood with it running cold and put your head towards the valve cover. The ticking kind of sounds like a few ball bearings getting tossed around the inside of the cover. Be careful you don't get hair or clothing caught in the accessory belts...
 
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