84SOOB Posted March 25, 2004 Share Posted March 25, 2004 On my '84 BRAT the fuel pump has started to sound like a helicopter thump thumping behind me. You can only hear it when you are stopped at a traffic light or something, but it's getting on my nerves. Is it a sign that it's on its way out or do they all sound like that after a while? Thanks, Brian. Quote Link to comment Share on other sites More sharing options...
jimkup Posted March 25, 2004 Share Posted March 25, 2004 My '88 Wagon's F.P. hums pretty loud. Has been happening prolly for at least a year or two. When the turn signal is on or I tap the brakes (while stopped) the tone changes slightly too. Hasn't given me a prob yet though. Not saying this is the norm, but, if it aint' broke.... Quote Link to comment Share on other sites More sharing options...
oddcomp Posted March 26, 2004 Share Posted March 26, 2004 check the mounts for it they usually are suspended on rubber bushings that can wear out and allow metal to metal contact i am assuming the brat is carbed? then the fuel pump will make a soft flutter/thump like noise due to its design but the bushing usually muffle the noise unless they wear out if its fuel injected then it will be a constant whine sometimes easy to hear otehr times not depends on the pump design but i would check the mounts first then look into a new pump you could add a fuel pressure gauge inline so you know if its working at the right pressure Quote Link to comment Share on other sites More sharing options...
gbianchi Posted March 26, 2004 Share Posted March 26, 2004 "On my '84 BRAT the fuel pump has started to sound like a helicopter thump thumping behind me. You can only hear it when you are stopped at a traffic light ". Thats exactly what mine does also been doing it for 2 years, the Brats name is therefor Huey:clap: Quote Link to comment Share on other sites More sharing options...
TheSubaruJunkie Posted March 26, 2004 Share Posted March 26, 2004 Its a safety feature to let you know the pump is still working, you should only worry when you DONT hear it heheh -Brian Quote Link to comment Share on other sites More sharing options...
84SOOB Posted March 26, 2004 Author Share Posted March 26, 2004 I'll take a look at the bushings I guess--Thanks guys Quote Link to comment Share on other sites More sharing options...
DaveAP Posted March 26, 2004 Share Posted March 26, 2004 my '84 brat does the same thing Quote Link to comment Share on other sites More sharing options...
edalexandr Posted March 27, 2004 Share Posted March 27, 2004 mine is quiet as a mouse:confused: Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted March 27, 2004 Share Posted March 27, 2004 My 85 does that too. I know exactly what you mean. The reason only Brat owners can hear them is the location of our pumps is right behind the driver door - under the car. My guess is that a lot of the older pumps make this noise. Ed - yours is under the hood - different pump too. GD Quote Link to comment Share on other sites More sharing options...
edalexandr Posted March 27, 2004 Share Posted March 27, 2004 yeah on the right side Quote Link to comment Share on other sites More sharing options...
vwbuge Posted March 27, 2004 Share Posted March 27, 2004 My dad's '86 has been doing it for 3 years now. Quote Link to comment Share on other sites More sharing options...
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