Engine making rattling sound like marbles

1988 CHEVROLET TRUCK
225,000 MILES
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DUSTYSCOTT123
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88 chevy 1500 350 tbi new plugs and wires and fuel filter. runs and idles fine when parked but has a racing cam when i push down on the gas it wont get up and go like it used to a couple days ago i have to let up on the gas to get it to go but sounds like marbles are in the engine?

700r4 transmission 2wd shortbed new brakes all around and lines etc.
Feb 23, 2012 at 1:12 AM
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JACOBANDNICKOLAS
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It sounds like something has happened inside the engine pull all plugs and do a compression test :-) let us know what you find.
Feb 23, 2012 at 1:30 AM
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DUSTYSCOTT123
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You were right two of the eight have low compression, I'm going to junk the truck, thanks for your help this site is the best :-)
Feb 23, 2012 at 1:33 AM
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