Vacuum Leak Help! - Ranger-Forums - The Ultimate Ford Ranger Resource

General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

LinkBack Thread Tools Search this Thread
Old 08-27-2008
Mr. Special's Avatar
Thread Starter
Join Date: May 2005
Location: Irvine, CA
Posts: 3,411
Icon4 Vacuum Leak Help!

Alright I have searched and searched without finding any specific answers.

Whenever I accelerate, either from a stop or already moving my vents go from panel to defrost. I have checked the vacuum ball by the intake and it doesn’t seem to have any cracks or damage. I have looked behind my glove box and behind the hvac controls and all the plugs are connected and I have looked everywhere I can figure is vacuum related in the engine and made sure the plugs are tight.

Where can I look from here?? I'm sure it is a vacuum leak but I have no idea what to look for now nor how to fix it.... not constantly having vents nor ac sucks with this heat =(
Reply With Quote
Old 08-27-2008
Level III Supporter
iTrader: (2)
Join Date: Jun 2004
Location: usa
Posts: 24,936
smoke test.. smoke the leak out..
Reply With Quote
Old 08-27-2008
acortez's Avatar
Join Date: May 2008
Location: Albuquerque
Posts: 127
may try the oil filler cap and dip stick. Its worth a shot.
Reply With Quote
Old 08-27-2008
Join Date: Nov 2005
Location: Elizabeth City, NC
Posts: 767
Chances are good that it is simply the checkvalve on the vaccuum ball.

It is the rubber fitting where the engine vaccuum line attaches to the ball. You can usually get them at the auto parts store in the HELP section. You can add an external checkvalve and leave the bad one in place, if necessary.

It is common for that particular vaccuum line to get rubbed through or cracked. Same goes for the heater control valve line. If you have a heater control valve, it will be located on the heater hose near the firewall. Your leak could be there too.
Reply With Quote
Old 08-27-2008
My91Ranger's Avatar
iTrader: (1)
Join Date: Apr 2007
Location: Roseville, Michigan
Posts: 2,252
One method of checking for an engine vacuum leak is to use starter fluid and spray it in the area's that you suspect there may be a leak. If there is a leak the engine will suck the starter fluid in and you will hear the engine rev up momentarily due to the starter fluid. This method can atleast help you find the area of the leak.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Vacuum leak? Vents no longer work jtslmn720 2.9L & 3.0L V6 Tech 25 03-21-2011 12:54 PM
vacuum leak? ranger_1999 General Ford Ranger Discussion 4 09-06-2008 11:10 AM
Vacuum Leak neb32 4.0L OHV & SOHC V6 Tech 3 08-28-2008 02:53 PM
EATC vacuum leak HELP madman4049 General Technical & Electrical 3 08-03-2008 11:52 PM
vacuum leak? Booncha57 2.3L & 2.5L I4 Tech 3 06-20-2007 12:09 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -6. The time now is 01:39 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.