Priming Oil in New Engine - No Pressure - Forums at Modded Mustangs
 
LinkBack Thread Tools
post #1 of 12 Old April 25th, 2011, 01:01 PM Thread Starter
Regular
 
BadStang23's Avatar
 
Join Date: Apr 2010
Location: Illinois
Posts: 57
 
iTrader: 0 reviews
Priming Oil in New Engine - No Pressure

I'm getting ready to startup a freshly built 4.6 L engine, and don't have oil pressure.

I removed the spark plugs and fuel pump fuse and cranked with the starter 10-15 seconds at a time, about 6 times. I have a mechanical oil pressure gauge connected where the small plug goes on the bottom of the filter housing, and it reads ZERO PSI - the needle doesn't even move while cranking.

I removed the gauge fitting and there's not even any oil in the filter housing! (I did pre-fill the filter) This tells me that the oil pump isn't circulating oil at all.

The engine sat for almost a year before I was able to get the rest of the car put together - pehaps the pump lost its prime? I've heard of others using a cheap garden sprayer connected to one of the oil filter housing ports to prime the modular engines. I plan to drain the oil and pump it back in using this method. Anyone have success building up pressure this way?

2001 4.6L GT
Engine/SC Build in Progress

Last edited by BadStang23; April 25th, 2011 at 01:04 PM. Reason: typo
BadStang23 is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old April 25th, 2011, 07:10 PM
I Post Entirely Way Too Much
 
86er's Avatar
 
Join Date: Nov 2006
Location: Memphis, TN
Posts: 7,992
                 
iTrader: 0 reviews
Send a message via AIM to 86er Send a message via Yahoo to 86er
what pump and pick up are you using, did you put the O ring on the pick up base?

Just a truck
5.4 3v: 264hp 317ft lbs rock stock

The "search" button, its not just for porn

piecing together the next project


faster than your first sexual experience
86er is offline  
post #3 of 12 Old April 26th, 2011, 09:12 AM Thread Starter
Regular
 
BadStang23's Avatar
 
Join Date: Apr 2010
Location: Illinois
Posts: 57
 
iTrader: 0 reviews
The pickup has the O-ring. It's a stock GT pump/pickup.

2001 4.6L GT
Engine/SC Build in Progress
BadStang23 is offline  
post #4 of 12 Old April 26th, 2011, 09:26 AM
I Post Entirely Way Too Much
 
86er's Avatar
 
Join Date: Nov 2006
Location: Memphis, TN
Posts: 7,992
                 
iTrader: 0 reviews
Send a message via AIM to 86er Send a message via Yahoo to 86er
did you measure the depth etc for clearance? If the pick up is too close to the pan it wont suck up any oil too

Just a truck
5.4 3v: 264hp 317ft lbs rock stock

The "search" button, its not just for porn

piecing together the next project


faster than your first sexual experience
86er is offline  
post #5 of 12 Old April 26th, 2011, 10:06 AM
a.k.a. Racecougar
 
Tang Stang's Avatar
 
Join Date: Sep 2010
Location: Imperial, MO
Posts: 4,616
                     
iTrader: 3 reviews
Quote:
Originally Posted by BadStang23 View Post
I've heard of others using a cheap garden sprayer connected to one of the oil filter housing ports to prime the modular engines. I plan to drain the oil and pump it back in using this method. Anyone have success building up pressure this way?
These engines can be a pain to prime. My super-special homemade engine oil primer has always worked though.


Rod @ AzzKicker Cars

2004 Ford Mustang GT-The Driver-BBK CAI, PP TB & Inlet, Steeda UD's, SLP LM1, & 3.73's.
1990 Mercury Cougar XR7-The Meth Addict-5.0L DOHC Stroker w/2.1L KB SC.
1995 Ford F150-Mud Toy-5.0L, 4x4, 33's, & Warn 8274 Winch
Tang Stang is offline  
post #6 of 12 Old April 26th, 2011, 02:49 PM Thread Starter
Regular
 
BadStang23's Avatar
 
Join Date: Apr 2010
Location: Illinois
Posts: 57
 
iTrader: 0 reviews
Quote:
Originally Posted by 86er View Post
did you measure the depth etc for clearance? If the pick up is too close to the pan it wont suck up any oil too
I measured for clearance before putting the oil pan on, so hopefully it's ok. Sounds like it'd be a pain to recheck with the engine installed.

2001 4.6L GT
Engine/SC Build in Progress
BadStang23 is offline  
post #7 of 12 Old April 26th, 2011, 07:20 PM Thread Starter
Regular
 
BadStang23's Avatar
 
Join Date: Apr 2010
Location: Illinois
Posts: 57
 
iTrader: 0 reviews
Quote:
Originally Posted by Tang Stang View Post
These engines can be a pain to prime. My super-special homemade engine oil primer has always worked though.
Thanks for the pic! I'll see if I can build my own "super-special" primer.

2001 4.6L GT
Engine/SC Build in Progress
BadStang23 is offline  
post #8 of 12 Old April 26th, 2011, 10:40 PM
mm's nitrous mod
 
SWEET2KSTANG's Avatar
 
Join Date: Oct 2006
Location: N.W. AR
Posts: 12,933
                 
iTrader: 8 reviews
i never had any issue at all prining these engines, but then again i have the primer set up for these things too. i dont recall ever having oil pressure during crank on fresh build. that is big reason why a good assembly lube is a must.



project warhorse under construction
wagon burner built! track times coming soon!(04 lightning)

being built by MP2 Performance
follow shop builds on facebook at: MP2 Performance
SWEET2KSTANG is offline  
post #9 of 12 Old April 26th, 2011, 10:49 PM
I Post Entirely Way Too Much
 
stal94gt's Avatar
 
Join Date: May 2010
Location: eglin afb florida
Posts: 11,462
                     
iTrader: 2 reviews
i never did any priming on new motors. i just sprayed the cylanders down with wd 40, made sure i used oem chain tensoners with the locks on them and pushed them out to make sure there was no slack in the chains. then when everything is all together i just keep the crank trigger senser unplugged and turn it over for about 10 sec, then start the car.
stal94gt is online now  
post #10 of 12 Old April 26th, 2011, 10:50 PM
mm's nitrous mod
 
SWEET2KSTANG's Avatar
 
Join Date: Oct 2006
Location: N.W. AR
Posts: 12,933
                 
iTrader: 8 reviews
2v's not as big of a deal. ive never had had a 2v jump on me, or a 4v either. my machinist had almost all 3v's and some 4v's jump on him.



project warhorse under construction
wagon burner built! track times coming soon!(04 lightning)

being built by MP2 Performance
follow shop builds on facebook at: MP2 Performance
SWEET2KSTANG is offline  
post #11 of 12 Old April 27th, 2011, 10:58 AM Thread Starter
Regular
 
BadStang23's Avatar
 
Join Date: Apr 2010
Location: Illinois
Posts: 57
 
iTrader: 0 reviews
May be fine to just fire it up, but I'm a bit conservative/anal with my new build and wanted to make sure I had oil pressure immediately for a little peace of mind.

I assembled the homemade version (under $12) of the Ford Racing primer pump using a garden chemical sprayer (with the wand removed), a 1/4" female brass coupling to a 1/4" hose barb adapter to a piece of clear 1/4" hose and another adapter and screwed into the 1/4" port at the bottom of the oil filter housing.

I was able to build pressure and pump about 3 qts in this way, rotating the engine 90 degrees at a time, then the rest through the fill tube. I still had to crank a few times at 10 second bursts, but my mechanical oil pressure gauge finally jumped from zero all the way to a steady 50-60 PSI. I think that jacking up the rear axle and cracking the oil filter loose slightly also helped get the pump primed.

When I started the engine up, I had 75 PSI oil pressure almost instantly.

Next time, I would probably use this method to prime it on an engine stand before dropping the engine in.

2001 4.6L GT
Engine/SC Build in Progress

Last edited by BadStang23; April 27th, 2011 at 10:59 AM. Reason: .
BadStang23 is offline  
post #12 of 12 Old April 27th, 2011, 11:26 AM
a.k.a. Racecougar
 
Tang Stang's Avatar
 
Join Date: Sep 2010
Location: Imperial, MO
Posts: 4,616
                     
iTrader: 3 reviews

Rod @ AzzKicker Cars

2004 Ford Mustang GT-The Driver-BBK CAI, PP TB & Inlet, Steeda UD's, SLP LM1, & 3.73's.
1990 Mercury Cougar XR7-The Meth Addict-5.0L DOHC Stroker w/2.1L KB SC.
1995 Ford F150-Mud Toy-5.0L, 4x4, 33's, & Warn 8274 Winch
Tang Stang is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Forums at Modded Mustangs forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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

Password:


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

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

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