07-24-2009, 08:52 PM
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fuel pump noise
i come out of the bank today and i noticed a buzzing noise coming from the rear of my car around the fuel tak area. i killed the car and when i turned the key on and the fuel pump starting priming .....i heard the noise. now whenever i drive the car its a constant buzzing sound thats driving me crazy!!
 im pretty sure its the fuel pump, but what does this mean? is it fixing to go out? safe to drive? change it now? if so, how bad of a job is it?help!!oh, by the way its a 1998 z-28
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07-24-2009, 10:07 PM
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everything is ok. the pump runs all the time. thats how it made.
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 names Tom: 1994 camaro z28, LT1 383 stroker 10.5 to 1 compression, 160* t stat, 488 cam, 3.42 gear, 50`s all around, firm shift, pcmforless, all free mods, p pump!, cats!
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07-24-2009, 11:22 PM
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If it is getting louder then yes its a sign that it is wearing out. Thats not saying it will die in the next day or so but you might want to look into getting it replaced.
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Glenn "Worry looks around, Sorry looks back, Faith looks up." 95 Z28  Sig pic courtesy of Laura
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07-25-2009, 05:16 PM
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I ran the Walbro 255 pump and it was right at 100 bucks but mine is an LT1 so Im not so sure they are the same. Probably not since you have the returnless fuel system.
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Glenn "Worry looks around, Sorry looks back, Faith looks up." 95 Z28 Sig pic courtesy of Laura
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07-25-2009, 09:53 PM
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Unless they changed it the Racetronix kit comes with the Walbro pump. At least mine did cause thats what I had on my car, and its the fuel pump that is in my car
 But you are correct you have to modify it a bit. Just took a dremel and ground some of the parts that kept the pump from sitting flush in the bucket.
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Glenn "Worry looks around, Sorry looks back, Faith looks up." 95 Z28 Sig pic courtesy of Laura
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07-25-2009, 09:55 PM
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Quote:
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Tony 
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07-25-2009, 09:56 PM
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Hmmm mine wasnt but hey it was a while back when I got one and also mine was for an LT1 so maybe the LSx is different.
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Glenn "Worry looks around, Sorry looks back, Faith looks up." 95 Z28 Sig pic courtesy of Laura
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07-25-2009, 10:03 PM
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Quote:
the racetronx kit has a walbro255, it is made to be a direct replacement of the stock pump with no extra modification, unless you get the hotwire, only thing you need to do with that is plug it in. all on the outside of the car. the regular walbro255 you will have to trim out the bucket for it to fit in i believe. and i'm not sure if it goes fine with the venturi system or if you have to cut the bottom of the bucket.
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Tony
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