spot on ezq'z me good advice -
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 06-02-2013, 04:13 AM Thread Starter
Senior Member
eddypro's Avatar
Join Date: Feb 2011
Location: brisbane
Posts: 3,493
Unhappy spot on ezq'z me good advice


Don't go too crazy with throttle body synch process and make it more complex then neccesary. On Fuel Injection sytems such as we have the air bleed screws are used to achieve harmonious intake manifold pressure (measured in vacuum, either mm or inches of mercury) at idle. The number is not important, only the balance. After achieving balance all 4 screws should be turned equally in or out to achieve proper idle rpm at normal operating temperature (neither hot or cold). Air bleed screws should NOT be bottomed out to achieve proper idle, or you have another problem (air leak?). As long as no one has ever messed with the linkage connecting the throttle plates together, you should not have to mess with them either. Rule of thumb: Don't touch any screws involved with throttle plates.

Unless you have other drivability problems above and beyond just normal service inspection you will find that you need only make very minor corrections for proper throttle body synch to accomodate for normal changes in engine condition over time (normal wear).

On the other hand, if you DO have drivability issues then the vacuum measurment can be a valuable diagnostic tool, one of many available to the knowledgable technician. Hope that helps a little bit

do not ever touch that f/n balance screw ,just cost me 1,150 dollars ,good advice above.

cheers eddy
eddypro is offline  
Sponsored Links

Quick Reply

Register Now

In order to use all of the features of the site, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome