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Old 01 Dec 2011, 08:31 pm
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Default 2000 Honda Civic making weird rattling knocking sound?

Whenever i push on the gas pedal, my car is making a rattling knocking sort of sound. I thought maybe it was from the vibrations from the engine... But it doesn't make the noise when i'm stopped at a red light, or when i take my foot of the accelerator and let the car coast. I just checked my oil and coolant... I think there might be a small leak... It looks like small spots of oil(its dark...) I'm clueless, please help!?
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Old 01 Dec 2011, 09:01 pm
Join Date: Aug 2007
Posts: 73

Sounds like an external part on the engine, like a pump or pulley. when the speed is increased, that might cause a bad pulley or a bearing in say, the power steering pump to rattle. I have seen that. At idling speeds, it makes an almost unnoticeable sound, but when the rpm is even slightly increased, a sound is heard. It is also possible a bolt or bracket is loose, also a possible cause for rattling noises.

try putting the car in neutral, and give it a little gas. Don't let the rpm go over 2,000 and have your foot on the brake so when you put it back in gear it doesn't take off or roll when you're testing it. have someone else inspect the running engine while you increase the rpm and have them look for excessively vibrating parts and listen to where the noise is coming from.
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Old 01 Dec 2011, 09:16 pm
Join Date: Aug 2007
Posts: 87

what a bunch of totally wrong answers. These are the answers you get in rip off repair shops.

Go to the nearest gas station and fill up with a higher octane gas than you are using. Peoblem solved. The leak requires more info.
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