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Old Dec 13, 2013 | 03:13 PM
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Default Engine Noise

Just started my 73 Vette. My brother had and It hasn't started four a year finally got a new battery for it. It started right up but it was very loud. It sounded like clanking noise. Any suggestions on what i should look for before i tear it apart?
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Old Dec 13, 2013 | 03:46 PM
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Define "clanking." Did you check the oil level before you lit it up?

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Old Dec 13, 2013 | 03:50 PM
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Default engine noise

Checked the oil before starting. Almost like a bang. Probably should take out spark plugs and give them a look at. Also maybe water pump?
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Old Dec 13, 2013 | 04:01 PM
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Take a video to.give us an idea. . Clanking or big bang could be a hundred things. If you hadn't started in over a year it could have been just a loud back fire or bad fuel in the system not firing right causing nkocking.. does it sound like a metal on metal bang or what?
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Old Dec 13, 2013 | 04:29 PM
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Default engine noise

Sounds more of a metal on metal sound.
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Old Dec 13, 2013 | 04:37 PM
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Maybe a cat hung in the fan shroud.

Thumping as it spins around


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Old Dec 13, 2013 | 05:16 PM
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Default engine noise

Or maybe some mice in there thumping around.
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Old Dec 13, 2013 | 05:23 PM
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If it's a manual transmission car, cover plate on bellhousing can give you fits when it grinds against the flywheel
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Old Dec 13, 2013 | 05:29 PM
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Default engine noise

Well automatic trans but i just had it towed here. I dont know going to get my son to video it tomorrow. Dosnt sound like valves it just clanking
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Old Dec 13, 2013 | 06:09 PM
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Originally Posted by LS4 PILOT
Maybe a cat hung in the fan shroud.

Thumping as it spins around


What an awful fate for a fan shroud.
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Old Dec 13, 2013 | 06:20 PM
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Spun big end bearing?
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Old Dec 13, 2013 | 06:25 PM
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Check under your valve covers. Rocker arm maybe loose. Had that happen on my 71 350 corvette.
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Old Dec 13, 2013 | 06:28 PM
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Default engine noise

Originally Posted by sug
Check under your valve covers. Rocker arm maybe loose. Had that happen on my 71 350 corvette.
Give that a look at thanks
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