84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

check for oil pressure w/o gauge?

Thread Tools
 
Search this Thread
 
Old 02-01-2009, 05:53 PM
  #1  
Registered User
Thread Starter
 
live4soccer7's Avatar
 
Join Date: Nov 2008
Posts: 1,319
Received 2 Likes on 1 Post
check for oil pressure w/o gauge?

I just got done putting the my 22r back together ( cracked head and blown HG) and I want to make sure I have adequate oil pressure before I go ahead and fire it up. Is there a way w/o hooking up a mechanical oil pressure gauge because I can't get the sensor off. I have the ign wire disconnected from the distributor so the engine doesn't actually start. Will the oil light (bottom left in gauge) go off when cranking if there is good pressure?

Thanks
Old 02-01-2009, 06:19 PM
  #2  
Registered User
 
Hayes's Avatar
 
Join Date: Apr 2006
Location: Aurora, CO
Posts: 2,018
Likes: 0
Received 0 Likes on 0 Posts
the light will not turn off until it starts. You are doing any good by cranking it like that either. Just run it, give it a few seconds to build pressure... If it doesn't turn it off and find the problem. The engine is without oil pressure for a few seconds after every oil change, just make sure it isn't for a long time.
Old 02-01-2009, 06:52 PM
  #3  
Donny, you're out of your element
Staff
iTrader: (23)
 
DeathCougar's Avatar
 
Join Date: Jan 2003
Location: Marysville, WA
Posts: 17,689
Received 54 Likes on 34 Posts
Originally Posted by Hayes
the light will not turn off until it starts. You are doing any good by cranking it like that either. Just run it, give it a few seconds to build pressure... If it doesn't turn it off and find the problem. The engine is without oil pressure for a few seconds after every oil change, just make sure it isn't for a long time.
Not true. The light will go off once you have oil pressure. This is how I verify oil pressure in my race cars. Disconnect the distributor, pull the EFI fuse (to prevent fuel overload) and crank it over. The light will go out once you have established oil pressure. Also, a good way to speed this process up is to fill the oil filter up with oil before installing it. This will help establish oil pressure faster, by taking less time to fill the filter once cranking begins. It may take a few seconds (often times it takes 10+ seconds if when my cars sit for the winter season) but the light WILL go out once you have pressure.

NEVER NEVER NEVER start the engine before you have good oil pressure after a rebuild. Most engine damage is done in the first 3-5 seconds after starting, on any day, and thats on a normal engine. Imagine the damage you are doing to an engine that was just rebuilt. Just do as I outlined above, and you will be fine.

Last edited by DeathCougar; 02-01-2009 at 06:54 PM.
Old 02-01-2009, 08:29 PM
  #4  
Registered User
 
okie81's Avatar
 
Join Date: Aug 2008
Location: Nor, CAL
Posts: 1,816
Likes: 0
Received 0 Likes on 0 Posts
With older domestic engines, you can prime the oil pump with a drill and an extension through the distributor opening...too bad the toyotas are run off the crank.
Old 02-01-2009, 08:56 PM
  #5  
Registered User
Thread Starter
 
live4soccer7's Avatar
 
Join Date: Nov 2008
Posts: 1,319
Received 2 Likes on 1 Post
thanks, I think I am good to do on this. The light went off and I was able to start it up and get things going.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bigjstang
86-95 Trucks & 4Runners
20
08-25-2021 12:41 AM
toyotamonster
3.4 Swaps
7
04-16-2020 06:02 PM
GreatLakesGuy
The Classifieds GraveYard
8
09-04-2015 09:27 AM
Huntingtruckcletus
Other Makes Cars/Trucks
0
07-08-2015 05:26 PM
HRDC0R19
86-95 Trucks & 4Runners
3
07-05-2015 06:43 PM



Quick Reply: check for oil pressure w/o gauge?



All times are GMT -8. The time now is 07:38 AM.