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P0303 Cylinder 3 Misfire

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Old Mar 26, 2023 | 04:14 PM
  #11  
greg8453's Avatar
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Joined: 03-29-2022
Posts: 1,240
From: Davison MI
Originally Posted by Jfidelh
I later figured out that P303 code was set due to very low gas. I was driving around trying to get the gas to low so that I could replace the fuel pump.
Absolutely not.
Old Mar 26, 2023 | 04:27 PM
  #12  
donbrew's Avatar
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Joined: 01-23-2009
Posts: 26,484
From: Fredericksburg,VA
Not "absolutely".
Here is the logic: the pump is not getting full "gulps" of gas resulting in low fuel pressure. Low fuel pressure finds the most gummed up injector. For reasons I don't know #3 is the most common misfire, maybe because the knock sensor location.

BTW, a 13 year old thread.
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