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Found 2 results

  1. So i have a 2000 chevy silverado 1500 4x4 with the 5.3L V8. I have replaced the seals on the injectors, new fuel pump, new fuel filter and new spark plugs and wires. The issue i am facing that i cannot figure out is why im still losing pressure in the fuel. It is no problem when it is cold it fires right up. But when its warm and i leave it shut off for more than five minutes, it takes three or four cycles of the key to start. I know im losing pressure but i do not know where or how. there is no fuel leaks anywhere that i can see. and with replacing everything i am stumped and need some help.
  2. I have a 2008 Yukon (5.3L V8, Flexfuel) that's having some starting issues after running for an extended period of time. Engine turns over fine when cold, but after driving for an extended period of time (minimum 30mins, varying speeds - city, highway), shutting the engine down and restarting after 10-30mins the vehicle starts funny. Instead of cranking over normally, it fires up almost immediately after turning the key - maybe half a crank. Engine then revs high for 5-10 seconds before returning to normal RPM. I've had the fuel pressure system tested and it came in at 55psi. I've also started monitoring if the issue pops up as the fuel level in tank decreases. I'm wondering if the Fuel Pressure Regulator on the engine block or on the tank could still be causing an issue like this? Or if the Fuel Injection System might have an issue? Any other suggestions would be greatly appreciated. Thanks!
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