Fuel System Noise

Reply Subscribe

Thread Tools

Search this Thread

Nov 10, 2008 | 08:47 AM

#21

phunk

CJ Motorsports

iTrader: (21)

Joined: Apr 2003

Posts: 3,997

Likes: 3

From: West Chicago, IL

westpak are you running twins or a single?

Nov 10, 2008 | 08:49 AM

#22

phunk

CJ Motorsports

iTrader: (21)

Joined: Apr 2003

Posts: 3,997

Likes: 3

From: West Chicago, IL

Quote:

Originally Posted by leeboyNY

It definitely gets louder as the engine gets heat soaked. It hums pretty loud after driving for longer than an hour. Should I be concerned or is this normal? I believe pumps are running fine, but I would like your input Charles.

when its humming really loud try opening the gas cap and see if the sound chills out a bit. if it does that gives me somewhere to start... but without hearing the noise myself i cant tell for sure if the noise youre hearing is normal or if there is something to look into

Nov 10, 2008 | 08:50 AM

#23

phunk

CJ Motorsports

iTrader: (21)

Joined: Apr 2003

Posts: 3,997

Likes: 3

From: West Chicago, IL

Quote:

Originally Posted by westpak

Mine whines a bit but not too loud, but I took a long drive a few weeks ago (couple hundred miles) and it so so loud when we got to ur destination it was crazy

Charles are these just cheap pumps? are there better quality drop in pumps out there?

i dont think its an issue caused by cheap pumps... they are certain rather cheap compared to the bosch 044 or the likes, but the opening of the gas tank flange is too small to put 2 of those in there.... the walbros flow well and can be reliable as long as they dont starve or cavitate

Nov 10, 2008 | 08:54 AM

#24

XKR

Registered User

iTrader: (1)

Joined: Sep 2007

Posts: 5,256

Likes: 0

From: Texas, Arizona,Cayman Island

Quote:

Originally Posted by phunk

does it actually get louder as the car warms up or is it possible that it just sounds louder since the idle sits lower at operating temp?

At idle you can hear my CJM Twins...but driving you have to be looking for the sound over the exhaust to hear it

Nov 10, 2008 | 09:03 AM

#25

westpak

SFZCC

iTrader: (19)

Joined: May 2002

Posts: 7,420

Likes: 2

From: Lake Worth, FL

Quote:

Originally Posted by phunk

westpak are you running twins or a single?

single

Nov 11, 2008 | 12:04 AM

#26

Havok_RLS2

Registered User

iTrader: (9)

Joined: Aug 2005

Posts: 2,384

Likes: 0

From: Bowie, MD

I hear mine as well. I just turn up the volume on the DVD player.

Any other ways to kill the buzz?

Nov 11, 2008 | 05:07 AM

#27

leeboyNY

Kimchi Eater

iTrader: (21)

Joined: Mar 2004

Posts: 1,414

Likes: 1

From: Korea & SF

Quote:

Originally Posted by westpak

Seems like you and I have the same symptom...

Nov 11, 2008 | 06:54 AM

#28

jonnylaw

Thread Starter

Registered User

iTrader: (3)

Joined: May 2006

Posts: 1,957

Likes: 2

From: Meifumado

Quote:

Originally Posted by phunk

Symptons/causes for starvation or cavitation?

Also, this may be a really stupid question, but is it harder for a fuel pump to push the requisite gas when the gas tank isn't full (e.g. 1/4 full)?

I noticed on my AFK that when I was at 1/4 of a tank, I was running a little lean, but after I filled up the tank, the AFR's were running how they should...

Mar 15, 2009 | 05:17 AM

#29

G35cTT

Registered User

iTrader: (2)

Joined: Dec 2004

Posts: 471

Likes: 0

From: So Cal

Hopefully someone can help me here since it's of same topic. I just got a new fuel pump assembly so had to redrill everything and put the old pump back in. The car drove great and then a week or 2 after it just kept cranking not turning over to start. Before I would hear the pump turn on and it'd fire up. Checked the fuse and it's good any clues? It's not the crank position sensor also as that has been changed.