Air Leaking Sound: Any ideas? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TIMSPEED · 05-22-2003, 01:19 PM

When I drive my truck, I hear a sound like air is leaking from somewhere. It's only like when I go from stop to part throttle. (Like off a stop sign). It's like a "shh shh shh shh shh shh" sound. I've checked to make sure all my header bolts were tight. The header gaskets are brand new. I don't have any smog equipment. (Such as an AIR Pump, that MIGHT make that noise) any ideas?
I got to thinking, that maybe that's just a normal sound for long tube headers to make on trucks. (Like air rushing through the primary tubes)

PHOENIX · 05-22-2003, 04:14 PM

Without hearing the sound I guess its hard to call.

Is it a constant shhhhhhhhhh, or does it go shh shh shh etc.?

If your are talking about a constant shhhhhhhhhhhh:
I hear it too when driving next to a wall or curb at lower speeds.
I also here the sound coming from vehicles that drive by me.

TIMSPEED · 05-22-2003, 04:16 PM

Quote:

Originally posted by PHOENIX
Without hearing the sound I guess its hard to call.

Is it a constant shhhhhhhhhh, or does it go shh shh shh etc.?

If your are talking about a constant shhhhhhhhhhhh:
I hear it too when driving next to a wall or curb at lower speeds.
I also here the sound coming from vehicles that drive by me.

It's a shh shh shh shh shh shh shh. I was thinking a bearing was out in something (water pump or somethin) But there's no bearings to BE out, since everything's brand new. Maybe it's coming from my EGR valve? I don't have anything hooked to it, so maybe it's letting air out somehow..but that EGR valve will be gone in a week, as soon as my blockoff plate gets here

Primered_69 · 05-22-2003, 04:23 PM

POWER BRAKE BOOSTER? MINE DID THAT WHEN IT WENT OUT

TIMSPEED · 05-22-2003, 04:29 PM

Quote:

Originally posted by Primered_69
POWER BRAKE BOOSTER? MINE DID THAT WHEN IT WENT OUT

Naw..don't got power brakes

*1FaastC10* · 05-22-2003, 04:37 PM

you just put an open element air cleaner on it, correct? did it do it before you did that? the stock filter housing muffles alot of noise.

TIMSPEED · 05-22-2003, 05:09 PM

Quote:

Originally posted by 1FaastC10
you just put an open element air cleaner on it, correct? did it do it before you did that? the stock filter housing muffles alot of noise.

Actually, I haven't put the open element on yet...

*rage'nrat638* · 05-22-2003, 05:49 PM

disconnect the vacuum hose that flipps the heater and a/c door under the dash..should be on the left side..of fire wall to the intake

it runs to the control panel....

TIMSPEED · 05-22-2003, 06:18 PM

Quote:

Originally posted by marksdoor69
disconnect the vacuum hose that flipps the heater and a/c door under the dash..should be on the left side..of fire wall to the intake it runs to the control panel....

Don't have one of those because my truck never had A/C. The heater/defrost door is controlled by a cable.

pkbinplano · 05-22-2003, 07:32 PM

dragging brake shoes/pads ?

TIMSPEED · 05-22-2003, 07:33 PM

Quote:

Originally posted by pkbinplano
dragging brake shoes/pads ?

Good guess. When I get paid, I'll replace them. MIIGHT be dragging brakes.

apstguy · 05-22-2003, 08:14 PM

Tires??? Mine did that and went flat

pkbinplano · 05-22-2003, 08:16 PM

HMMM, good point. I'd just put all new radials and brakes on to be on the safe side/ lol

TIMSPEED · 05-22-2003, 08:30 PM

Quote:

Originally posted by pkbinplano
HMMM, good point. I'd just put all new radials and brakes on to be on the safe side/ lol

Tires are all brand new.

apstguy · 05-22-2003, 08:34 PM

Doesn't mean it won't have defects!

pkbinplano · 05-22-2003, 08:44 PM

Defects are common in tires and aren't covered under warranty without shipping them back yourself. lol

05-22-2003, 01:19 PM	#1
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	Air Leaking Sound: Any ideas? When I drive my truck, I hear a sound like air is leaking from somewhere. It's only like when I go from stop to part throttle. (Like off a stop sign). It's like a "shh shh shh shh shh shh" sound. I've checked to make sure all my header bolts were tight. The header gaskets are brand new. I don't have any smog equipment. (Such as an AIR Pump, that MIGHT make that noise) any ideas? I got to thinking, that maybe that's just a normal sound for long tube headers to make on trucks. (Like air rushing through the primary tubes) __________________ I have a few cars... See Them Here

05-22-2003, 04:14 PM	#2
PHOENIX Registered User Join Date: Oct 2002 Location: Phoenix, Arizona Posts: 4,703	Without hearing the sound I guess its hard to call. Is it a constant shhhhhhhhhh, or does it go shh shh shh etc.? If your are talking about a constant shhhhhhhhhhhh: I hear it too when driving next to a wall or curb at lower speeds. I also here the sound coming from vehicles that drive by me. __________________ * AVOID: LOPER'S PERMORANCE / LOPERSPEED.COM OF PHOENIX, AZ & COTTMAN TRANSMISSION *

05-22-2003, 04:23 PM	#4
Primered_69 Registered User Join Date: Sep 2002 Location: Fort Worth Posts: 1,409	POWER BRAKE BOOSTER? MINE DID THAT WHEN IT WENT OUT __________________ 1969 Chevy LWB - with shaved handles; 3 1/2 front/ 5 1/2 rear drop; (waiting to be put back together)

05-22-2003, 07:32 PM	#10
pkbinplano pkbinplano Join Date: Nov 2002 Location: Plano Texas Posts: 370	dragging brake shoes/pads ? __________________ http://www.picturetrail.com/gallery/...7496&members=1 84 chevy silverado aka The Bananna Boat

05-22-2003, 08:14 PM	#12
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	Tires??? Mine did that and went flat __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

05-22-2003, 04:37 PM	#6
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	you just put an open element air cleaner on it, correct? did it do it before you did that? the stock filter housing muffles alot of noise.

05-22-2003, 05:49 PM	#8
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	disconnect the vacuum hose that flipps the heater and a/c door under the dash..should be on the left side..of fire wall to the intake it runs to the control panel....

05-22-2003, 08:16 PM	#13
pkbinplano pkbinplano Join Date: Nov 2002 Location: Plano Texas Posts: 370	HMMM, good point. I'd just put all new radials and brakes on to be on the safe side/ lol __________________ http://www.picturetrail.com/gallery/...7496&members=1 84 chevy silverado aka The Bananna Boat

05-22-2003, 08:34 PM	#15
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,087	Doesn't mean it won't have defects! __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

05-22-2003, 08:44 PM	#16
pkbinplano pkbinplano Join Date: Nov 2002 Location: Plano Texas Posts: 370	Defects are common in tires and aren't covered under warranty without shipping them back yourself. lol __________________ http://www.picturetrail.com/gallery/...7496&members=1 84 chevy silverado aka The Bananna Boat



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