Oil pump priming tool - JeepForum.com
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post #1 of 27 Old 09-09-2021, 09:42 AM Thread Starter
OCDXJ
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Oil pump priming tool

What can you use to prime the oil pump?

I have seen somewhere that you can make a priming tool, just can't find were I read that.


01'XJ,4.0l,AW4,NP231,D30,CHY8.25,3"IROlift,Bilstei n's,IRO OTKsteering,245/70R16,NokianRotiiva AT
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post #2 of 27 Old 09-09-2021, 09:58 AM
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Wish I could find a picture =1000 words-

oil pump primer jeep - they are @20$


old school -like me
using an old dist assy, removing the gear drive for cam, and fabricate a fitting where dist rotor would go to drive center shaft with a drill or impact tool. then with the dist installed it will drive oil pump.

I would pack the new pump - vasoline - no plugs installed and crank engine till oil pressure.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #3 of 27 Old 09-09-2021, 10:42 AM
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Quote:
Originally Posted by jtec View Post


old school -like me
The old distributor is the best tool ever. I had no Jeep dizzy so I got by just using a broken screwdriver. I cut off the handle part and chucked the shaft in a 1/2" drill. Stick it down to engage the pump drive shaft and spin away.

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post #4 of 27 Old 09-10-2021, 05:49 AM
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Crank with the CPS unplugged. You will see oil pressure rising on gauge in seconds. Plug CPS in and start the engine,

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post #5 of 27 Old 09-10-2021, 10:10 AM
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8 mm socket fit my ford

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post #6 of 27 Old 09-10-2021, 12:51 PM
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When I replaced my distributor, I stripped the shaft out of my old one in case I need it.
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post #7 of 27 Old 09-10-2021, 03:25 PM
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Lots of examples. http://mikestrawbridge.com/blog/2019...on-a-jeep-4-0/

Mark in Queens- Home of Spiderman and the Ramones
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post #8 of 27 Old 09-11-2021, 07:20 AM
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Waste of time. Let the starter do the work for you.

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post #9 of 27 Old 09-12-2021, 12:56 PM Thread Starter
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Originally Posted by cruiser54 View Post
Waste of time. Let the starter do the work for you.
I took your advice to just let the starter do the work, I hooked up the mechanical gauge unplugged CPS filled with oil tried turning it over to get PSI but I get nothing.

Is there a way to get oil in the pump to create a seal so it will prime without taking everything apart?

01'XJ,4.0l,AW4,NP231,D30,CHY8.25,3"IROlift,Bilstei n's,IRO OTKsteering,245/70R16,NokianRotiiva AT
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post #10 of 27 Old 09-12-2021, 03:35 PM
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Quote:
Originally Posted by cruiser54 View Post
Waste of time. Let the starter do the work for you.

how long without pressure b 4 damage to bearings.
i have a reason for asking..

99wj, 150,000 miles
00xj ,189,000 miles
10hummer3,76,000 miles
98xj, 133,000 miles
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post #11 of 27 Old 09-12-2021, 03:49 PM
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None. They're under no load. They have a film of oil on them already also.

crank longer.

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post #12 of 27 Old 09-12-2021, 05:27 PM Thread Starter
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Quote:
Originally Posted by cruiser54 View Post
None. They're under no load. They have a film of oil on them already also.

crank longer.
I finally got it had to pull the cam poured a little oil on the driver put a drill on it and got pressure pretty quick.

The mechanical gauge was at 20PSI hot idle put the sensor back in and it only read 10PSI so gauge just sucks ***, at least I have a new oil pump in and a new gasket that doesn't leak, pressure is the same as when I started.

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post #13 of 27 Old 09-12-2021, 07:31 PM
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Quote:
Originally Posted by cruiser54 View Post
None. They're under no load. They have a film of oil on them already also.

crank longer.
what about cam bearings,lifter / rocker springs?
i wonder why cranking got no oil but i finally pulled dist and used a socket.
this is on a big block ford.
afterwards i cranked and got 60.
im concerned

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00xj ,189,000 miles
10hummer3,76,000 miles
98xj, 133,000 miles
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post #14 of 27 Old 09-12-2021, 07:50 PM
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The engine has the same amount of oil on those components as an engine that was turned off how many days his hasn't run.
Let's say you park your Jeep for a month or more. You don't need to prime the oil system before you start it.

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post #15 of 27 Old 09-12-2021, 09:07 PM
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Quote:
Originally Posted by cruiser54 View Post
The engine has the same amount of oil on those components as an engine that was turned off how many days his hasn't run.
Let's say you park your Jeep for a month or more. You don't need to prime the oil system before you start it.

but ?my engine cranked last year with good oil but now, new oil pump was "primed" with oil b4 installed but no oil when cranked. without plugs it was spinning...
finally with a drill/socket it was fine.
?any damage when cranking with no pressure.??
appreciate you knowledge

99wj, 150,000 miles
00xj ,189,000 miles
10hummer3,76,000 miles
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