Fuel system noise - Car Troubleshooting


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

Lukewarm Heat............

New antifreeze reverse flush heater core...

multiple warning lights

2013 GMC Terrain 130,000 miles 4 cylinde...

2014 Nissan Sentra Shaking

Car recently started shaking when accele...

Buy Flualprazolam Powder Online Whatsapp: +1(424) 328-1086

N/A

1989 toyota pickup 3.0 crank no start

I have a 1989 toyota pickup 3.0 crank no...

Strut spring orientation and strut mount tension nut

2017 Nissan rogue awd 2.5 L Put in Monro...

Transmission stuck in part, I have tried everything

So I'm working on my elderly fathers 201...

2017 dodge journey LED headlights on/off randomly

Year of vehicle 2017 Make of vehicle dod...

Kia Soul starter replacement issues!

Okay so my car is a 2010 Kia soul 2.0 en...

Please Help - Knock sound & engine fail

Hi all, Hoping to get some insight and ...

Fuel system noise

Sign up here!

Search for (search options)

Auto Repair Home>> Automotive Repair>> Car Troubleshooting

redbones
New User

Apr 14, 2008, 12:36 PM

Post #1 of 5 (3089 views)

Fuel system noise	Sign In

Anybody know what would cause a pulsating noise/vibration thru the entire fuel line?

http://www.youtube.com/watch?v=WcEuhpQ4isk

The fuel lines(feed, return, evaporation) go through the door sill on the driver's side. You can hear this sound in the cabin. It sounds like the vid at 750rpms, and the sound rate increases as the rpms go up. But the sound goes away once the clutch is engaged. I used the stethoscope and I can hear this sound only on the fuel lines along from the engine, all the way to the fuel tank. When I touch the lines, I can also feel the pulsation. Please help. Thanks

(This post was edited by redbones on Apr 14, 2008, 12:37 PM)

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 14, 2008, 1:47 PM

Post #2 of 5 (3085 views)

Re: Fuel system noise	Sign In

What kind of vehicle is this?

T

redbones
New User

Apr 14, 2008, 2:47 PM

Post #3 of 5 (3082 views)

Re: Fuel system noise	Sign In

Sorry, this is for a 2006 impreza wrx. with 20K miles.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Apr 14, 2008, 6:17 PM

Post #4 of 5 (3078 views)

Re: Fuel system noise	Sign In

Lines may not be mounted properly. Why isn't this a warranty concern?

T

redbones
New User

Apr 16, 2008, 8:55 PM

Post #5 of 5 (3067 views)

Re: Fuel system noise	Sign In

I think I found the culprit. There is this device that looks like a pressure regulator along the fuel lines, but called a pressure damper valve in the manual. This device regulates the pressure vibrations caused by the fuel pump and injectors. I also hear that this does not regulate actual fuel pressure, so that explains why the car runs perfectly fine.

What do you guys think?

Search for (options) Privacy Sitemap