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Oil Pump Lost Prime
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<blockquote data-quote="SecondhandSnake" data-source="post: 16567716" data-attributes="member: 116684"><p>Bought a used 302 to throw in the fox. Engine turns freely. I changed the oil and put a new filter on. Went to prime it by turning the oil pump shaft with an extension and drill, and it just won't pick up or push oil. I'm turning it the correct direction (verified in the Chilton's manual). There's enough oil in it.</p><p></p><p>I know the normal approach is packing the pump with petroleum jelly or even assembly lube to get a good prime and then turning it. That's always worked for me on fresh builds, and that's with the same heavy duty drill. But this one has been sitting, and it's already in the car so I don't want to have to drop the pan.</p><p></p><p>Are there any other good ways to get it primed again? The only two I can think of are removing the filter and trying to push oil back into the block through the filter inlet port. I could maybe do that with my pressure priming tool and a rubber plug. Or the other option is back fill it through the oil pressure switch port, but because of the anti drain back valve, I would need to use an old filter can and gut that valve out of it.</p><p></p><p>Also I never noticed this section before, but I'm glad to see it and I'll have to frequent it more.</p></blockquote><p></p>
[QUOTE="SecondhandSnake, post: 16567716, member: 116684"] Bought a used 302 to throw in the fox. Engine turns freely. I changed the oil and put a new filter on. Went to prime it by turning the oil pump shaft with an extension and drill, and it just won't pick up or push oil. I'm turning it the correct direction (verified in the Chilton's manual). There's enough oil in it. I know the normal approach is packing the pump with petroleum jelly or even assembly lube to get a good prime and then turning it. That's always worked for me on fresh builds, and that's with the same heavy duty drill. But this one has been sitting, and it's already in the car so I don't want to have to drop the pan. Are there any other good ways to get it primed again? The only two I can think of are removing the filter and trying to push oil back into the block through the filter inlet port. I could maybe do that with my pressure priming tool and a rubber plug. Or the other option is back fill it through the oil pressure switch port, but because of the anti drain back valve, I would need to use an old filter can and gut that valve out of it. Also I never noticed this section before, but I'm glad to see it and I'll have to frequent it more. [/QUOTE]
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