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Old 06-14-2008, 09:41 PM
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Priming oil pump

One of the shop manuals advises to prime the oil pump by packing it with petroleum jelly before screwing down the cover. This is to induce the pump to prime.

Anyone tried this?

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Old 06-14-2008, 10:10 PM
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I've never done that. If it takes thick gooooo to get the pump to work, you need a new pump!! LOL I just pour a little oil inside and bolt it on!

Mark
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Old 06-14-2008, 10:12 PM
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I like to pack it with assembly fluid. The OLD school procedure was using petroleum jelly. I have used STP, Morey's, Lithium Grease, Wheel Bearing grease, in the past with no problems. Any thick lubricant will work.

I just prefer to use Assembly Fluid.
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Old 06-14-2008, 10:16 PM
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Quote:
Originally Posted by Jmark
I've never done that. If it takes thick gooooo to get the pump to work, you need a new pump!! LOL I just pour a little oil inside and bolt it on!

Mark
Hey Mark, I do not use regular oil unless I am ready to fire it off right away. JMO
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Old 06-14-2008, 10:20 PM
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Oil only for me. Like Jmark said, if you're not getting pressure just from spinning the pump, its a bad pump. Putting grease or petroleum jelly in a pump means that you have to push that thick paste past bearings, through little orifices, and all around.

When installing the pump, just pour some oil down the pickup tube so it has lubrication. Once you're ready to fire the engine, just spin the pump. You should be pressure almost instantly You want as little crap in the way as possible. Use only oil on journals, assembly lube on direct contact surfaces like rockers and cam lobes. Every engine I've built has lived a happy life like this
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Old 06-14-2008, 10:32 PM
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Do You Want Fries With That?
Yes, can you make it a biggie? ROFLMAO!
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Old 06-14-2008, 11:03 PM
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I've never installed a pump that I didn't take apart. You'd be surprised! After I check them and do whatever I do, all it get's is oil.
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Old 06-15-2008, 02:08 AM
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I too, check out a new pump before bolting on. (height mic)

Oil it.

Prime it RIGHT before start up.
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Old 06-15-2008, 07:50 AM
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Quote:
Originally Posted by carsavvycook
Do You Want Fries With That?
Yes, can you make it a biggie? ROFLMAO!

Yea, I like that one too! Got it in an email yesterday. Wait till I get my new bumper sticker on my truck!!! LOL I'll post a picture!
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Old 06-15-2008, 08:21 AM
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I use Lubriplate #105 assembly lube. It's light yet hangs in there until ready. It also mixes easily with the oil after firing it up. I turn the pump by hand and let the pump draw it in until it's pretty full, then install the pump. I always have oil pressure almost immediately when the engine starts spinning over. Then I hook up the ignition, fuel and fire it off.
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