No oil pressure after replacing oil pan gasket!
#1091102
10/09/11 01:52 AM
10/09/11 01:52 AM
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Joined: Dec 2005
Posts: 2,886
Bowling Green KY / Nashville, ...
300by500
OP
master
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OP
master
Joined: Dec 2005
Posts: 2,886
Bowling Green KY / Nashville, ...
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'71 Dart, 318/904. I pulled the pan to install a new gasket earlier this week, finally got around to working on it today. The rod bearings were original and showed some wear, so I threw a new set in. Replaced the caps and torqued to spec, same with the oil pump and oil pan. Converted to a mini-starter while I was under it... filled it with oil and checked oil level, figured I was good to go. Whenever I start an engine after doing any work involving the rotating assembly I pull the coil wire and crank it to make sure there's good oil pressure. I have zero oil pressure. Could the pump have lost prime? I took great care to clean the oil pan, pump, and pickup, as a previous owner had used some sort of additive that had really gummed up in the bottom of the pan. Should I have taken the cover off of the oil pump and re-filled it? I don't wanna tear this thing apart again.... 
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Re: No oil pressure after replacing oil pan gasket!
[Re: 300by500]
#1091103
10/09/11 02:39 AM
10/09/11 02:39 AM
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Joined: Jan 2003
Posts: 1,607
Western Washington
Sixgun
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,607
Western Washington
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I saw this a few times on high mileage engines. If the pump is worn seriously, it cannot pull air up thru itself and get the liquid prime (which takes up some of the clearances, air will NOT) You need to install a new pump down the road and /or freshen up the motor or find a fresher one to install. For now, try this a** backwards method.Unscrew your oil pressure sending unit and using a small funnel or squeeze bottle,squeeze as much as you can into there, like a quart if you can.Real quick, screw the sender or gauge back in and crank again.This is assuming you filled up the oil filter FIRST before installing.Do that if you have not. This MAY work for now... 
I'm 55 now, no time to waste. Not a week goes by that I don't hear about someone passing on.Let's get out there,smoke some tires,have a beer with a good friend,do what you have always wanted to do.I am pretty sure no one will ever say on their deathbed "gee I'm glad my life was calm and boring"
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Re: No oil pressure after replacing oil pan gasket!
[Re: Sixgun]
#1091106
10/09/11 06:17 AM
10/09/11 06:17 AM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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you will have to pull the gear and shaft out to use the primeing tool I have done the oil down the sender hole before and it worked. when you have a pump off its a good idea to remove the plate and pack it with vasaline,this will help prime the pump by not sucking aire the vasaline will thin out in the oil and not clog the filter,but I do change the oil few soon after. yes allways fill the filter as much as posiable to help prime it. good luck...nothing worse thasn to have to pull a well sealed oil pan right back off of it 
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Re: No oil pressure after replacing oil pan gasket!
[Re: RapidRobert]
#1091110
10/09/11 09:31 AM
10/09/11 09:31 AM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Quote:
Or just turning the filter to break the seal so that it can bleed the air.
That then drill prime it again (CW since you mentioned prior BB's)
Robert - first line , first post. ''71 Dart, 318/904'
Prime clockwise. small block. No need t prime with drill for this. Remove coil wire and spin starter to bleed if needed. Just filling filter should be should suffice.
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Re: No oil pressure after replacing oil pan gasket!
[Re: roe]
#1091112
10/09/11 10:33 AM
10/09/11 10:33 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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MFL; agreed but no appreciation for quoting/agreeing with your post  . Yes for some reason I assumed it was a new build/cam breakin prob since there's been so many of em lately plus it was 6AM. Roe I appreciate the backup and support, it's always good to have people in your corner
live every 24 hour block of time like it's your last day on earth
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Re: No oil pressure after replacing oil pan gasket!
[Re: roe]
#1091113
10/09/11 10:36 AM
10/09/11 10:36 AM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Quote:
Quote:
Quote:
Or just turning the filter to break the seal so that it can bleed the air.
That then drill prime it again (CW since you mentioned prior BB's)
Robert - first line , first post. ''71 Dart, 318/904'
Prime clockwise. small block. No need t prime with drill for this. Remove coil wire and spin starter to bleed if needed. Just filling filter should be should suffice.
I think Robert was just reminding him to prime CW with a SB because the OP mentioned he was using a BB priming shaft. 
That is the way I read it too but it is:
Prime clockwise small block - counter clockwise big block. priming shafts are the same.
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Re: No oil pressure after replacing oil pan gasket!
[Re: MoparforLife]
#1091114
10/09/11 10:48 AM
10/09/11 10:48 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I'll work on improving my sentence structure. Bottom line, we're trying to help as many people as fast and accurately as possible and maintain Mopar superiority. Good tech/meticulousness/k.i.s.s./eliminating frustration/asking for help/experimentation/thinking outside the box
live every 24 hour block of time like it's your last day on earth
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Re: No oil pressure after replacing oil pan gasket!
[Re: Oyvind Mopar]
#1091116
10/09/11 01:45 PM
10/09/11 01:45 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Quote:
Please notice: The priming shaft for big block will have to be turned down a minor amount in the end appx 2" from the hex and up, if used in small block, as the entrance in the block through the pump is smaller on the small block. If you use the same diameter as the smallblock oilpump shaft it works without problems. It could happen that a big block primer will fit, but it could also happen that it will seize in the block as it is a close fit. Sometimes it goes through, but it could also stick. If you have difficulties to enter the pump hex with the tool now you know why...I learned it the hard way.
My 
They only list one. P4286800 BB/SB. Have used the same shaft for many years and never had a problem.
What is going to seize in the block??? They also use the same intermediate shaft bushing where the shaft passes through to the block to the oil pump.  That's new one. Learn something new everyday.
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Re: No oil pressure after replacing oil pan gasket!
[Re: MoparforLife]
#1091117
10/09/11 01:58 PM
10/09/11 01:58 PM
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Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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What Oyvind is referring to is if you had used a stock 440 oil pump drive to make a priming tool... The shaft area that rides in the bushing can bind... The hex shaft priming tool won't have any problem...
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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