YotaTech Forums

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

3vze idle drop when remove oil cap??

Thread Tools
 
Search this Thread
 
Old 04-30-2013, 03:23 PM
  #1  
Registered User
Thread Starter
 
hockey88fan's Avatar
 
Join Date: Mar 2013
Location: Leesport, PA
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
3vze idle drop when remove oil cap??
Just like the title says, I have recently rebuilt 3vze, just replaced the cam plug cause it was leaking. So I started it up after the fix, and I don't know why but I removed the oil cap and the the idle dropped pretty significantly. I put my hand over the oil fill hole and it niether sucked my hand nor pushed air out. Is the idle drop normal? My buddy was pretty surprised, he's never heard of that happening in the fords he works on.
Thanks
hockey88fan is offline  
Reply Like
Old 04-30-2013, 03:29 PM
  #2  
Contributing Member
 
rworegon's Avatar
 
Join Date: Nov 2010
Location: Columbia River Gorge, Oregon...east side
Posts: 5,125
Likes: 0
Received 2 Likes on 2 Posts
Yes, normal to have idle drop.
rworegon is offline  
Reply Like
Old 04-30-2013, 04:47 PM
  #3  
Registered User
Thread Starter
 
hockey88fan's Avatar
 
Join Date: Mar 2013
Location: Leesport, PA
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by rworegon
Yes, normal to have idle drop.
Great, thanks!
hockey88fan is offline  
Reply Like
Old 04-30-2013, 04:54 PM
  #4  
Contributing Member
 
rworegon's Avatar
 
Join Date: Nov 2010
Location: Columbia River Gorge, Oregon...east side
Posts: 5,125
Likes: 0
Received 2 Likes on 2 Posts
...or just funky idle either way with the cap off.
rworegon is offline  
Reply Like
Old 04-30-2013, 04:58 PM
  #5  
Registered User
Thread Starter
 
hockey88fan's Avatar
 
Join Date: Mar 2013
Location: Leesport, PA
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
I'm thinking cause it's fooling the air in take?
hockey88fan is offline  
Reply Like
Old 04-30-2013, 05:35 PM
  #6  
Contributing Member
 
rworegon's Avatar
 
Join Date: Nov 2010
Location: Columbia River Gorge, Oregon...east side
Posts: 5,125
Likes: 0
Received 2 Likes on 2 Posts
Yeah, it basically creates a vacuum leak. There was another thread recently on this exact issue and someone had a good explanation, IIRC.
rworegon is offline  
Reply Like
Old 05-01-2013, 06:57 AM
  #7  
Registered User
 
MudHippy's Avatar
 
Join Date: Jan 2007
Posts: 6,106
Likes: 0
Received 23 Likes on 20 Posts
I resurrect thee...
https://www.yotatech.com/forums/f5/2...-wierd-141477/
MudHippy is offline  
Reply Like

Trending Topics

Old 05-01-2013, 08:14 AM
  #8  
Registered User
Thread Starter
 
hockey88fan's Avatar
 
Join Date: Mar 2013
Location: Leesport, PA
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by MudHippy
Haha thanks! My buddy says it doesn't happen on the fords he's worked on, why is that, different vacuum set up?
hockey88fan is offline  
Reply Like
Old 05-01-2013, 12:25 PM
  #9  
Registered User
 
MudHippy's Avatar
 
Join Date: Jan 2007
Posts: 6,106
Likes: 0
Received 23 Likes on 20 Posts
Happens on any non-carbureted engine with a PCV system.
Last edited by MudHippy; 05-01-2013 at 12:29 PM.
MudHippy is offline  
Reply Like
Old 05-01-2013, 12:57 PM
  #10  
Registered User
Thread Starter
 
hockey88fan's Avatar
 
Join Date: Mar 2013
Location: Leesport, PA
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by MudHippy
Happens on any non-carbureted engine with a PCV system.
Makes sense he works and rebuilds classic cars, he doesn't touch the new stuff, thanks.
hockey88fan is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
20R Distributor Differences 1979-1980
msane99
Pre 84 Trucks
6
07-11-2015 08:08 PM
4runner stalling in gear... Do this again please
Jnkml
95.5-2004 Tacomas & 96-2002 4Runners
3
07-06-2015 01:20 PM
93 runner build
MTLroadierunner
86-95 Trucks & 4Runners
0
07-06-2015 12:17 PM
FS[NorAtl]: 1989 pickup beds and leer cap Rhode island
mickyd9990
Misc Stuff (Vehicle Related)
0
07-06-2015 09:01 AM
New AC Questions (Not the same old ones)
HRDC0R19
86-95 Trucks & 4Runners
3
07-05-2015 06:43 PM
Back to Subforum
86-95 Trucks & 4Runners
View Next Unread
Valve covers, any options on anything other than plastic




Advanced Search
Quick Reply: 3vze idle drop when remove oil cap??


Reply Closed Thread Share

All times are GMT -8. The time now is 09:26 PM.