New old pump priming question
08-16-2018, 11:05 AM
#1
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Oil pump priming question
92 22RE
Got a new oil pump and did a search about priming. Some use vaseline, some use assembly lube, some use nothing and just crank the engine with the coil wire off. I have both vaseline & assembly lube, but wondering which one will work better, or a combination of the 2? How much vaseline or assembly lube do you pack in there?
Also, should I remove the 22mm bolt/spring on the pump and add oil in that hole to help prime? I do want to remove that bolt anyway just to make sure they didn't leave the spring out.
I do have the valve cover off, so last step before starting will be to pour oil directly on the rocker arms.
Thanks!
Got a new oil pump and did a search about priming. Some use vaseline, some use assembly lube, some use nothing and just crank the engine with the coil wire off. I have both vaseline & assembly lube, but wondering which one will work better, or a combination of the 2? How much vaseline or assembly lube do you pack in there?
Also, should I remove the 22mm bolt/spring on the pump and add oil in that hole to help prime? I do want to remove that bolt anyway just to make sure they didn't leave the spring out.
I do have the valve cover off, so last step before starting will be to pour oil directly on the rocker arms.
Thanks!
Last edited by Paul22RE; 08-16-2018 at 11:27 AM.
08-16-2018, 01:08 PM
#2
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Toyota doesn't recommend (one way or the other) "priming" the oil pump.
http://web.archive.org/web/201501160.../58oilpump.pdf
Since you need to use sealant on the pump, I would be concerned that the "priming" grease would mess up the sealant. So I would follow the FSM, not prime it, and try to assure a good seal.
If you're going to crank the engine with coil wire off, you'd be well advised to remove the COR as well. Otherwise, you're still pumping fuel; and you could end up with a lot sitting in the exhaust system.
http://web.archive.org/web/201501160.../58oilpump.pdf
Since you need to use sealant on the pump, I would be concerned that the "priming" grease would mess up the sealant. So I would follow the FSM, not prime it, and try to assure a good seal.
If you're going to crank the engine with coil wire off, you'd be well advised to remove the COR as well. Otherwise, you're still pumping fuel; and you could end up with a lot sitting in the exhaust system.
08-16-2018, 01:38 PM
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It seems to me that it would be better to crank with the EFI fuse pulled. That will shut down the fuel injectors, and I think the ignition as well, although I'm not 100% sure. In any case, the engine won't start with the injectors shut down, and no fuel will be sprayed anywhere.
Just pulling the high voltage coil wire leaves the high voltage from the coil with nowhere to go, resulting in possible arcing and carbon tracks where you don't want them. I know it's often done that way, but I don't think it's the best method.
Just pulling the high voltage coil wire leaves the high voltage from the coil with nowhere to go, resulting in possible arcing and carbon tracks where you don't want them. I know it's often done that way, but I don't think it's the best method.
08-16-2018, 03:05 PM
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Yes, EFI fuse is a better choice.
(I was doing ignition system testing, and wanted to be sure the fuel flow was off. But the EFI fuse takes out ignition too, so that wouldn't have worked for me. Taking out both ignition and fuel is exactly what Paul22re wants!)
(I was doing ignition system testing, and wanted to be sure the fuel flow was off. But the EFI fuse takes out ignition too, so that wouldn't have worked for me. Taking out both ignition and fuel is exactly what Paul22re wants!)
08-17-2018, 04:15 AM
#5
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Thread Starter
Toyota doesn't recommend (one way or the other) "priming" the oil pump.
http://web.archive.org/web/201501160.../58oilpump.pdf
Since you need to use sealant on the pump, I would be concerned that the "priming" grease would mess up the sealant. So I would follow the FSM, not prime it, and try to assure a good seal.
If you're going to crank the engine with coil wire off, you'd be well advised to remove the COR as well. Otherwise, you're still pumping fuel; and you could end up with a lot sitting in the exhaust system.
http://web.archive.org/web/201501160.../58oilpump.pdf
Since you need to use sealant on the pump, I would be concerned that the "priming" grease would mess up the sealant. So I would follow the FSM, not prime it, and try to assure a good seal.
If you're going to crank the engine with coil wire off, you'd be well advised to remove the COR as well. Otherwise, you're still pumping fuel; and you could end up with a lot sitting in the exhaust system.
08-17-2018, 04:31 PM
#7
Packing
Packing means just that, packed! Typically till it's running out any openings involved in the flow.
The thicker it is (petroleum jelly, moly lube) the better it will stay where you put it and not wind up in the gasket nor flow out down the pickup tube.
The pump is self priming. It has to refill the pickup tube (prime) every coldstart pretty much, but that said it can't hurt to pack it or prelube it unless you get it all over and it won't seal.
Regardless you typically want to protect it from corrosion due to air moisture.. Maybe something comes up and you don't wind up turning it over as soon as you think, unexpected thinks happen all the time.
The thicker it is (petroleum jelly, moly lube) the better it will stay where you put it and not wind up in the gasket nor flow out down the pickup tube.
The pump is self priming. It has to refill the pickup tube (prime) every coldstart pretty much, but that said it can't hurt to pack it or prelube it unless you get it all over and it won't seal.
Regardless you typically want to protect it from corrosion due to air moisture.. Maybe something comes up and you don't wind up turning it over as soon as you think, unexpected thinks happen all the time.
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