1993 SSE 3800 Engine Noise - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-17-2007, 03:12 AM   #1
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Default 1993 SSE 3800 Engine Noise

My 93 SSE not supercharge has this crazy knocking noise in the engine
this guy around my house who fix cars told me it sounds like the rocker arm lifter or some crap he said.
he told me to buy some crap called ENGINE HONEY so i did guess what didn't work
can someone please help me.
can it be fix or do i need a new engine
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Old 05-17-2007, 09:06 AM   #2
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how meny miles? could be as simple as a bad lifter. is it at idle and then goes away with rpms? or does it stay going throughout the rpms?
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Old 05-17-2007, 06:26 PM   #3
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I recommend taking the car to a repitable automotive repair facility to see exactly what is wrong with the car. It may be what the guy said, but until you have the car looked at by a professional, I wouldn't assume that the engine is toast just yet.
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Old 05-17-2007, 06:27 PM   #4
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Has the lower intake gaskets ever been replaced?
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Old 05-17-2007, 06:49 PM   #5
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Given the information, it'* impossible to make any intelligent diagnosis. There'* all kinds of things that can make a knocking noise. Best to take it to someone with a little experience. A bad lifter will make more of a ticking noise than a knock and may go away after it pumps up. An exhaust leak can sound like a lifter too. A connecting rod bearing going south will be more of a clunk, deeper and more solid sounding than a lifter. Easy to tell the difference if you know what one or the other sounds like to begin with. How'* your oil pressure? A toasted engine bearing is normally accompanied by a significant drop in oil pressure.
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Old 05-17-2007, 08:39 PM   #6
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There is one thing that can cause a horrible knocking sound on the outside of the engine - a harmonic balancer that is coming apart. That is the big pulley on the front of the engine at the bottom. When you take it to a reputable mechanic, make sure to ask him to check out that possibility. Otherwise......could be a balance shaft bearing, rod bearing, main bearing, piston pin, lifter, rocker arm, or camshaft. They all sound different. A good mechanic should be able to make a pretty good guess for you - and shouldn't charge much for just a listen and a guess.
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