Priming the pickup tube?
Thread Starter
Teching In
Joined: May 2024
Posts: 3
Likes: 1
Priming the pickup tube? Hi,
I'm about to change the oil pan and pickup tube on my LM7. I find a lot of people who are priming the oil pump and beyond (rockers etc) by pressurizing the oil pump through the allen key hole.
But isn't this still leaving the suction side (the pickup tube) empty? Is there no need to prime the pickup tube somehow? If not I guess I don't need priming after just changing the pickup pipa and oil pan?
Thanks! /Ronnie
I'm about to change the oil pan and pickup tube on my LM7. I find a lot of people who are priming the oil pump and beyond (rockers etc) by pressurizing the oil pump through the allen key hole.
But isn't this still leaving the suction side (the pickup tube) empty? Is there no need to prime the pickup tube somehow? If not I guess I don't need priming after just changing the pickup pipa and oil pan?
Thanks! /Ronnie
Hi,
I'm about to change the oil pan and pickup tube on my LM7. I find a lot of people who are priming the oil pump and beyond (rockers etc) by pressurizing the oil pump through the allen key hole.
But isn't this still leaving the suction side (the pickup tube) empty? Is there no need to prime the pickup tube somehow? If not I guess I don't need priming after just changing the pickup pipa and oil pan?
Thanks! /Ronnie
I'm about to change the oil pan and pickup tube on my LM7. I find a lot of people who are priming the oil pump and beyond (rockers etc) by pressurizing the oil pump through the allen key hole.
But isn't this still leaving the suction side (the pickup tube) empty? Is there no need to prime the pickup tube somehow? If not I guess I don't need priming after just changing the pickup pipa and oil pan?
Thanks! /Ronnie
TECH Apprentice
Joined: Aug 2018
Posts: 383
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I recently rebuilt my 06 Suburban LQ4. I added oil to the pump(engine upside down on the stand) and then plugged the hole with glob of transmission assembly lube, so it wouldn't leak out while I continued to assemble the engine.
I primed the engine with a pump sprayer and that fitting prior to firing the engine. I don't really know if the assembly lube did anything, but at least it kept the oil inside the pump until the oil pan got installed. Just a thought.
I primed the engine with a pump sprayer and that fitting prior to firing the engine. I don't really know if the assembly lube did anything, but at least it kept the oil inside the pump until the oil pan got installed. Just a thought.
TECH Fanatic
Joined: Jan 2022
Posts: 1,362
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If you hold the throttle pedal to the floor prior to and while you’re turning the key to start the motor it will turn over and not start. It will start once you release the gas pedal. It’s called “clear flood mode” or something like that. I do it after an oil change. I think it works with pretty much any car. Even the new push button start cars.
Thread Starter
Teching In
Joined: May 2024
Posts: 3
Likes: 1
Thanks for your replies.
Just to make sure I decided to prime it.I removed the Allen fitting at the oil pump and no oil poured out, seemed empty after standing still for a month. I have now pushed through about 3 liters of oil just to make sure😁
Thanks for the tip about full throttle method. Didn't know about that, seems easier than feeding the starter with 12v👍🏻
Just to make sure I decided to prime it.I removed the Allen fitting at the oil pump and no oil poured out, seemed empty after standing still for a month. I have now pushed through about 3 liters of oil just to make sure😁
Thanks for the tip about full throttle method. Didn't know about that, seems easier than feeding the starter with 12v👍🏻
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