Mazda 323,Mazda 626 & Mazda 929 Whether the compact 323, the mid sized 626, or the full sized 929, these vehicles remain very popular even though production has stopped.

FUEL SMELL PROBLEM!

  #1  
Old 11-05-2006, 04:39 AM
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Default FUEL SMELL PROBLEM!


Hey...I thought I had this all taken care of but the gas smell has returned. I checked one of my vacum hoses under the hood and gas dripped out, why or how this could be happening. Also my start up is getting rougher. Any suggestions would be greatly appreciated.
 
  #2  
Old 11-06-2006, 08:00 PM
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Default RE: FUEL SMELL PROBLEM!

The only hose where gas would come from would be the fuel pressure regulator on the fuel rail...that I could think of. This will also cause it to start and idle rougher.
 
  #3  
Old 11-07-2006, 04:17 AM
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Default RE: FUEL SMELL PROBLEM!


I will get the fuel pressure regulator checked out...thanks.
 
  #4  
Old 11-07-2006, 01:10 PM
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Default RE: FUEL SMELL PROBLEM!



COULD A PIN HOLE IN THE HOSE LEADING TO OR FROM THE FUEL PRESSURE REGULATOR CAUSE THE SAME PROBLEM?
 
  #5  
Old 11-07-2006, 11:09 PM
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Default RE: FUEL SMELL PROBLEM!

If you are getting raw fuel in a vacuum hose there is something wrong. The hose should be clean on the inside. The fuel pressure regulator is a diaphragm device. On one side of the diaphragm is fuel pressure and the other side is engine vacuum. The two should never come in contact with each other. It is possible to have a rupture is the diaphragm allowing fuel to escape into the vacuum hose.
 
  #6  
Old 11-08-2006, 01:41 PM
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Default RE: FUEL SMELL PROBLEM!



I will check into it....Thanks!
 
  #7  
Old 11-08-2006, 11:40 PM
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Default RE: FUEL SMELL PROBLEM!

this exact same thing happened to my 1994 mazda 626. it had horrible idle speeds (varying each day) and the start up was horrible. I took it to the dealer and they said that they couldnt find out where the gas smell was coming from, why it was idleing bad, or why it was so hard to start up. my dad and i opened the hood and the first thing i found was that gas was leaking around the fule pressure regulator. we got a new one and it solved the problem. (apparently the disc was cracked on the inside)
 
  #8  
Old 11-18-2006, 11:32 AM
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Default RE: FUEL SMELL PROBLEM!



Hey fellas, I replaced the Fuel Pressure Regulator and it runs great. Thanks for the heads up!
 
  #9  
Old 11-18-2006, 11:18 PM
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Default RE: FUEL SMELL PROBLEM!

Cool deal! We're here to help.
 
  #10  
Old 11-24-2006, 01:46 PM
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Default RE: FUEL SMELL PROBLEM!



An update on my Fuel Smell Problem...after the install of the new fuel pressure regulator no fuel smell, the car starts right up but now it seems to be missing terribly...very sluggish ride. Any suggestions!
 

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