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  #1  
Old 07-18-2009, 03:05 PM
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Default Cylinder 4 missfire and lean

I am working on a 1997 mazda b2300 (ranger Clone).. it has the 2.3 SOHC ford engine.. i am getting 2 different codes.. P0304 and P0171 one is cylinder four missfire and the other is System too lean bank 1... I have replace the spark plugs and wires sence they were origanal and should have been done a long time ago... now i am still geting the 2 same codes... i have checked around for any vaccume leaks and to see if anything was disconnected.. but everything looks good.. also the fuel filter has been changed not too long ago so i know thats good.. any ideas???
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  #2  
Old 07-18-2009, 04:23 PM
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well i am thinking along the lines of a fuel injector... what do you guy think???
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Old 07-30-2009, 08:46 PM
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Fuel injector seems logical to me.
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  #4  
Old 08-04-2009, 09:01 PM
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I changed the #4 injector a few weeks ago and it did the trick... Thanks for the reply
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  #5  
Old 08-31-2010, 08:04 PM
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Exclamation Re: Cylinder 4 missfire and lean

Hi thanx for tha injector tip I too am havn the same problem. I will try that out and see if it works but one question. Do I need to get an obd1 reader or what? Plz help.
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1994 Mazda B2300 2.3L, throttle body spacer, intake muffler delete, no cat, 3.73 gears
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  #6  
Old 05-22-2011, 07:04 PM
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Default Re: Cylinder 4 missfire and lean

How did you determine that you needed to replace a fuel injector and which one was bad?

My ranger 4cyl has hesitation when applying gas. I have checked about everything suggested
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