Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

bad vacuum leak where to start???

Thread Tools
 
Search this Thread
 
Old Sep 21, 2011 | 05:26 PM
  #1  
BUST'EM504's Avatar
Thread Starter
Registered User
 
Joined: Aug 2011
Posts: 120
Likes: 0
bad vacuum leak where to start???

Well I have been under the hood for 2 hours trying to find this damn leak and can't find it any help?? The good news is it sounds like I have a cam in this som ma bitch
Reply
Old Sep 21, 2011 | 05:32 PM
  #2  
b4wheeler's Avatar
Registered User
iTrader: (1)
 
Joined: Apr 2006
Posts: 239
Likes: 1
From: Pasadena, Md
Start spraying carb cleaner or ether around the vacuum lines and when you hear a change in the idle, you wil have found the leak...
Reply
Old Sep 21, 2011 | 05:37 PM
  #3  
mountaingoat's Avatar
Registered User
 
Joined: Oct 2007
Posts: 134
Likes: 0
From: Bozeman, MT
How do you know it's a vacuum leak?
Reply
Old Sep 21, 2011 | 05:46 PM
  #4  
BUST'EM504's Avatar
Thread Starter
Registered User
 
Joined: Aug 2011
Posts: 120
Likes: 0
I not 100 percent but I can hear it sucking sounds like vacuum
Reply
Old Sep 21, 2011 | 05:58 PM
  #5  
BUST'EM504's Avatar
Thread Starter
Registered User
 
Joined: Aug 2011
Posts: 120
Likes: 0
I sprayed the whole motor down with starting fluid and it's still running rough and rich. It's idling about 600
Reply
Old Sep 21, 2011 | 06:01 PM
  #6  
BUST'EM504's Avatar
Thread Starter
Registered User
 
Joined: Aug 2011
Posts: 120
Likes: 0
I also just changed the water pump but I don't think that has anything to do with it
Reply
Old Sep 21, 2011 | 07:25 PM
  #7  
westjohns yota's Avatar
Registered User
 
Joined: May 2011
Posts: 1,751
Likes: 0
From: pensacola FL
is your timing set right? might have jumped, injectors clean? it can be more then a vaccum leak, also some vaccums are connected to the brake booster which has a seal that tends to go bad, thats what happended to mine causeing it to run rich again mines carbed but its the same principle, good luck!
Reply
Old Sep 22, 2011 | 07:06 PM
  #8  
BUST'EM504's Avatar
Thread Starter
Registered User
 
Joined: Aug 2011
Posts: 120
Likes: 0
Well good news I started her up today still ran rough .decided to take a little cruise I'm pulling back in the driveway she started purring like kitten
Reply
Old Sep 23, 2011 | 12:53 AM
  #9  
TNRabbit's Avatar
Contributing Member
 
Joined: Apr 2006
Posts: 4,787
Likes: 36
From: TENN Native Languishing in Virginia
If it sounds like it has a souped up cam, could be the EGR valve sticking open or a bad vacuum distribution disc.
Reply
Old Sep 23, 2011 | 06:10 AM
  #10  
BUST'EM504's Avatar
Thread Starter
Registered User
 
Joined: Aug 2011
Posts: 120
Likes: 0
I thought something like the egr or pcv is there a way to delete this emissions crap??
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
zd92655
86-95 Trucks & 4Runners
9
Mar 6, 2022 12:58 PM
JF9243176
86-95 Trucks & 4Runners
18
Oct 8, 2017 04:21 AM
voiddweller
86-95 Trucks & 4Runners (Build-Up Section)
19
May 2, 2016 09:10 PM
Sandman
86-95 Trucks & 4Runners
5
Jul 23, 2015 08:15 PM
JF9243176
Newbie Tech Section
0
Jun 24, 2015 04:53 AM




All times are GMT -8. The time now is 01:27 AM.