Loping engine I have a 2001 chevy z71 silverado with a 4.8 vortec engine. When i am dirving at slow speeds and let off the gas and try to accellerate again my truck lopes just for a couple of seconds and then resumes running fine.
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If the engine is turning over than none of the things you replaced will make the engine"start".
You will need to check for fuel pressure and spark first.
This sounds llike weak feul pressure, the fuelpump may need replacing, the first thing to do is have the fuel pressure tested and if the pressure is low then have the pump replaced. the pump is located inside the fuel tank and the tank will need to be dropped to replace the pump, good luck ,
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