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92 chevy 1500 350
just installed used motor in my truck 350 fuel injected other motor had bad rings motor ran fine for a few days drove truck about 150 miles interstate 70 mph no smoke or noises got alomost home started losing power missing real bad got home retimed it starts if hold throttle half open pours black smoke then dies out won't idle reset timing no change all sensors throttle body n distributor are off motor i took out of trk any ideas?
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