Knocking sound at cold start. Any ideas?

[Wags1965]

No I can’t.

After the engine sits for an extended period, oil drains back from the filter and oil galleries to the pan. The ticking is the lifters until the oil pressure builds back up. Look up Baxter and drain back filter adapter for the jeep around $320. Or you can put your foot on the accelerator pedal and brake and start it, it will crank but not start. Due this for 10-20 seconds then turn off ignition and then start again like normal. You may have a quick tick then it stops, you have successfully primed the lifters.

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[ShadowsPapa]

Or you can put your foot on the accelerator pedal and brake and start it, it will crank but not start. Due this for 10-20 seconds then turn off ignition and then start again like normal. You may have a quick tick then it stops, you have successfully primed the lifters.

Amazing how people think that's helpful - you are still spinning the engine the same, there's really no difference. By the time you have it running, there's pressure already.
If you watched the pressure as you start it, you'd see that as quick as it fires, there is pressure because these start out in high volume, high pressure mode for startup.
As soon as there is pressure at all, the lash adjusters (there are no lifters) already are up to snuff.

But if it makes people feel better....................