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  #1  
Old March 17th, 2011, 06:55 PM
Nigel
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Ted Constantine
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Oil Pump Prime???

Ok,

So my 94 D90 has just undergone the worlds longest water pump and hose replacement. I had it apart for a year and obviously got caught up in other things. We just finishing putting it back together but now have a new problem

There is no oil pressure, the lifters are tapping away and the oil light is on. I say that without actually putting a gauge on it but there is no oil at the top cooler hose if we take it off while the engine is running. I am guessing sitting for a long time with the Rad out resulted in the pump loosing its prime.

How do you prime them? Do you think there is a larger issue? All advise welcome.

Thanks
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  #2  
Old March 17th, 2011, 08:59 PM
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Jeff Labbé
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no priming to be done here.. Have you check if there's oil in th engine first?
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Old March 17th, 2011, 09:16 PM
Nigel
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Ted Constantine
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oil is full, not even low at all.

------ Follow up post added March 17th, 2011 09:29 PM ------

So what are the other options?

First think I did was switch the oil filter to make sure it was not clogged in some way.

Oil pump actually dead?

Pressure relief issue?

We are talking no oil pumping I think.
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  #4  
Old March 17th, 2011, 10:07 PM
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Dave McHenry
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Pull the end of the oil pump and pack it with Vaseline and whey you crank the engine it will create a vacuum and prime the pump.
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Old March 18th, 2011, 03:40 AM
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Tony Sims
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You certainly can prime mechanically, using an electric drill and a tool that goes in the distributor drive

http://www.rimmerbros.co.uk/Item--i-RX1431-LATE

The vaseline trick is well regarded too. Put it in the fridge overnight and it will be easier to get it to stay put while you install the pump cover.
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  #6  
Old March 18th, 2011, 09:14 AM
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Charles Galpin
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I did this on a 94 recently and it primed right up. Undo the large bolt head on the oil pump and carefully remove (it has a spring behind it). Pack the cavity with vaseline and reinstalled the plug. The oil pressure light should go off in seconds. I did not put it in the fridge or anything - just raided the bathroom.
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Old March 18th, 2011, 12:39 PM
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Quote:
Originally Posted by Nigel View Post
There is no oil pressure, the lifters are tapping away and the oil light is on. I say that without actually putting a gauge on it but there is no oil at the top cooler hose if we take it off while the engine is running.

Thanks
I know this seems obvious but don't run the engine in this condition. Disconnect the coil and crank it on the starter until the oil light goes out or at least starts to flicker.
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Old March 18th, 2011, 12:52 PM
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William Skidmore
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Just to let the guy know that the Vaseline trick is actually in the repair Manual for the D90. Actual process to prime the pump. The old man at the Auto repair shop on base was impressed that it said that in the official manual.
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Old March 28th, 2011, 04:23 PM
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Ted Constantine
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vasoline worked perfectly...thanks for the input.

Ted
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