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Old 14 Sep 2007, 02:04 pm
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Default 1992 Honda prelude Knocking noise under hood?

Ok i was told it was a 96 prelude but it turns out its a 92. It has 127k miles and its an automatic. I hear a slight knocking sound coming from what i think are the valves. What's the cost of getting the valves all redone? And what is the most possible reason for the noise???
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Old 14 Sep 2007, 02:08 pm
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old gas is one possible cause for knocking and rough running
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Old 14 Sep 2007, 02:10 pm
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15 year old hard abused 127k sell it and get something else if it needs valves it needs amotor and brakes and struts and exhaust and... and...and
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Old 14 Sep 2007, 02:18 pm
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Sounds like there could be sludge in the engine, especially if u haven't been doing regular oil changes and maintenance.
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Old 14 Sep 2007, 02:28 pm
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If it a slight knocking it is probably NOT a blown engine. It could be valves. It also could be a head gasket, or a oil pump leak. If your oil pump is not working right, it will not filter the oil to all of the part of the car and knocking will occur. A oil pump could cost as much as $ 1,000 or more depending on where you go. Find out if your exhast pipe is dripping water-if it is, you may need a rebuilt motor. Before you decide to get a rebuild motor, you need to find out what other condition your car is in. It is a 92 so it is over 10 years old.
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Old 14 Sep 2007, 02:36 pm
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i would suspect that you have noisy lifters you may find it's real noisy when you first start the car and then quietens down after a few moments caused by irregular servicing and or old age it's probably not worth fixing but could be improved with an aftermarket additive for noisy lifters [hydraulic valve lifters] plus regular oil changes.
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Old 14 Sep 2007, 02:40 pm
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i'd say get another car. don't trust those used cars beleive me i had too many episodes with used cars
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Old 14 Sep 2007, 02:44 pm
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It'll be the valves. Go to a local shop and ask how much it'd be to get them re-adjusted.
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