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Hard to start below freezing.

fixum1fixum1 Posts: 2
edited January 2015 in Chevrolet
Hey guys, My Chevy 1500 with 4.8 has started to become hard to start when below freezing. I have to attempt to start it four or five times. Once it starts and warms up it is good for the rest of the day. I have changed coolant temp.
sensor, fuel pressure regulatator. It does have aftermarket k&n cold air intake on it. Once the outside temps are 35 or above starts every time. Any ideas?

Comments

  • fixum1fixum1 Posts: 2
    Fixed the Problem. Bad Check Valve in the Fuel pump allowing fuel to drain back to the tank. Fuel pump is fine. Just added a 20.00 dorman inline check valve.
  • steverstever Posts: 52,462
    Thanks for reporting back.
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