Back

 Vs Commodore Making Sucking Sound From Engine? - after new plugs and coil pack  

Post Topic
commodoreboy4life
  • commodoreboy4life
  • Standard User
  • Member No.: 201,120
  • Joined: 31-August 10
  • Posts: 208
  • From: 4300
Post #1 post 29th November 2010 - 08:45 PM
hey guys i got a vs commodore that we replaced the plugs,coil pack and leads etc. but when ever i put my foot down on idol it makes a strange sucking sound before it revs??? also if i pull the cable from inside the engine it doesn't do it unless i pull it quickly??? HELP!!!!

--------------------
life's a gift.....live it up
TOP
zacy-g
Post #2

Induction of air?
Sounds like you have poor throttle response..

Wraith
Post #3

Sounds like intake noise to me..

iamhappy46
Post #4

Vacuum leak, possibly from the vacuum line from the back of the manifold to the interior air lines

commodoreboy4life
Post #5

QUOTE (zacy-g @ Nov 30 2010, 04:26 PM) *
Induction of air?
Sounds like you have poor throttle response..

how would i go about fixing that mate??

Riverside
Post #6

You didnt leave the lid for the airbox unclipped did you?

commodoreboy4life
Post #7

QUOTE (Riverside @ Dec 1 2010, 11:26 AM) *
You didnt leave the lid for the airbox unclipped did you?

nah mates its all clipped up and clamped tight etc.

Wraith
Post #8

What brand is your air filter?

LEE191
Post #9

Dose it hunt around at idle? or idle high?
might be the vacuum hose under the throttle body but doubt it.

try loading it up in gear to see you have a misfire might have leads on wrong, they will idle ok on only a few cylinders.

commodoreboy4life
Post #10

QUOTE (Wraith @ Dec 1 2010, 01:13 PM) *
What brand is your air filter?

just ya standard one

commodoreboy4life
Post #11

QUOTE (LEE191 @ Dec 1 2010, 02:26 PM) *
Dose it hunt around at idle? or idle high?
might be the vacuum hose under the throttle body but doubt it.

try loading it up in gear to see you have a misfire might have leads on wrong, they will idle ok on only a few cylinders.

it idols just right its only when you put ya foot down it makes a sucking sound before it kicks in

trev084
Post #12

Didn't take the intake pipe off did you?

You don't have to remove anything else to do the plugs and coil pack on them.

Wraith
Post #13

Is there a noticeable lag or is it just a loud induction noise? Mine does it as well when I stomp it how ever I have a bigger throttle body and a K&N filter.

iamhappy46
Post #14

QUOTE (commodoreboy4life @ Dec 2 2010, 11:42 AM) *
it idols just right its only when you put ya foot down it makes a sucking sound before it kicks in


I think you will find if there is no vacuum leaks like I suggested before and the car does not miss or hunt at idle, then it is normal induction roar

commodoreboy4life
Post #15

QUOTE (iamhappy46 @ Dec 2 2010, 01:23 PM) *
I think you will find if there is no vacuum leaks like I suggested before and the car does not miss or hunt at idle, then it is normal induction roar

where would be the best place to look for a vacuum leak?

iamhappy46
Post #16

QUOTE (iamhappy46 @ Nov 30 2010, 08:13 PM) *
Vacuum leak, possibly from the vacuum line from the back of the manifold to the interior air lines


*cough*

ShowMeYourS13
Post #17

IF THERE IS ANY VAC LEAKS OR YOU THINK THERE IS ONE GO DOWN TO THE LOCAL AUTO BARN OR THE LIKE AND GET SOME I THINK WD40 OR SOMETHING LIKE THAT THE DUDES THERE WILL KNOW. JUST TELL THEM YOU HAVE A VAC LEAK AND YOU ARE TRYING TO FIND IT AND THEY WILL GIVE YOU SOME SPRAY SHIT THAT WHEN YOU SPRAY IT ON THE HOSES AND THERE IS LEAK IT WILL FUCK WITH THE IDLE IE MAKE IT HUNT,REV HIGH OR STALL THEN YOU WILL KNOW THE LEAK IS SOMEWHERE IN THE SPOT YOU SPRAYED THEN JUST ELIMINATE FROM THERE. MORAL IS YOU SPRAY THIS SHIT ON THE HOSES AND LISN FOR A CHANGE IF NO CHANGE NO LEAK.

commodoreboy4life
Post #18

lube mobile came around and did some shit in the engine and left the air filter unclipped and the pipe wasnt clamped etc. but its all back on right.....

commodoreboy4life
Post #19

QUOTE (ShowMeYourS13 @ Dec 2 2010, 09:58 PM) *
IF THERE IS ANY VAC LEAKS OR YOU THINK THERE IS ONE GO DOWN TO THE LOCAL AUTO BARN OR THE LIKE AND GET SOME I THINK WD40 OR SOMETHING LIKE THAT THE DUDES THERE WILL KNOW. JUST TELL THEM YOU HAVE A VAC LEAK AND YOU ARE TRYING TO FIND IT AND THEY WILL GIVE YOU SOME SPRAY SHIT THAT WHEN YOU SPRAY IT ON THE HOSES AND THERE IS LEAK IT WILL FUCK WITH THE IDLE IE MAKE IT HUNT,REV HIGH OR STALL THEN YOU WILL KNOW THE LEAK IS SOMEWHERE IN THE SPOT YOU SPRAYED THEN JUST ELIMINATE FROM THERE. MORAL IS YOU SPRAY THIS SHIT ON THE HOSES AND LISN FOR A CHANGE IF NO CHANGE NO LEAK.

cheers mate

milehigheric
Post #20

QUOTE (ShowMeYourS13 @ Dec 2 2010, 09:58 PM) *
IF THERE IS ANY VAC LEAKS OR YOU THINK THERE IS ONE GO DOWN TO THE LOCAL AUTO BARN OR THE LIKE AND GET SOME I THINK WD40 OR SOMETHING LIKE THAT THE DUDES THERE WILL KNOW. JUST TELL THEM YOU HAVE A VAC LEAK AND YOU ARE TRYING TO FIND IT AND THEY WILL GIVE YOU SOME SPRAY SHIT THAT WHEN YOU SPRAY IT ON THE HOSES AND THERE IS LEAK IT WILL FUCK WITH THE IDLE IE MAKE IT HUNT,REV HIGH OR STALL THEN YOU WILL KNOW THE LEAK IS SOMEWHERE IN THE SPOT YOU SPRAYED THEN JUST ELIMINATE FROM THERE. MORAL IS YOU SPRAY THIS SHIT ON THE HOSES AND LISN FOR A CHANGE IF NO CHANGE NO LEAK.



It apears your caps lock is in the on position....

Beanos351
Post #21

QUOTE (commodoreboy4life @ Dec 3 2010, 09:42 AM) *
lube mobile came around and did some shit in the engine and left the air filter unclipped and the pipe wasnt clamped etc. but its all back on right.....



... So lube mobile is to blame, FUCK OFFF.... How are they going to compensate you for that...? if it sucked any of those bolts or clamps into your engine - BOOM..

If it was Lube Mobile,, them **** can get fucked!
Thats what you get for paying 'mobile mehcanics....' ask here first, and save yourself the hassle

iamhappy46
Post #22

^^ Thankfully, that is what the AFM wire screen is for :thumbsup:

turbo x-trail
Post #23

Most cars will have a bit more induction roar with new plugs, the stronger spark improves throttle response. All my cars have done it.

Beanos351
Post #24

So true..

iamhappy46
Post #25

QUOTE (turbo x-trail @ Dec 7 2010, 05:52 PM) *
Most cars will have a bit more induction roar with new plugs, the stronger spark improves throttle response. All my cars have done it.


New spark plugs actually have weaker initial capacitive phase spark, since the ion build up on the electrodes makes the spark 'dribble' across the gap resulting in a longer inductive phase. 1000km old spark plugs will make more power due to a bigger initial fireball than brand new plugs :P

turbo x-trail
Post #26

QUOTE (iamhappy46 @ Dec 8 2010, 03:38 PM) *
New spark plugs actually have weaker initial capacitive phase spark, since the ion build up on the electrodes makes the spark 'dribble' across the gap resulting in a longer inductive phase. 1000km old spark plugs will make more power due to a bigger initial fireball than brand new plugs B)


Here I am, just offering some innocent advice, then you have to come and get all science on my ass?!

hahahaha What background do ya have in science bro?

  • Member Login

    If you have a BoostCruising account enter your user name and password into the yellow box.

    Alternatively, you can quickly login with Facebook.

    If you don't have an account create one below.

    Create Account
  • Forgotten your password?
  • Login with Facebook

    Login using your Facebook account!

1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
Loading...
x