Ticking while in park

[Sfgsr1]

Hi,

On Friday I just bought an 03 Explorer with a 4.0 with 109k miles . I purchased it from a mechanic that said he just replaced the timing g chains. I test drove it and everything was working and running great. The next day I start it for it to warm up and get my kids in the back and start hearing a ticking sound coming from the front of the engine on the driver side. As soon as I put it in drive and start driving it goes away, it drives completely fine. I'm stumped with this one. Here is a video of the noise that it's making.

https://streamable.com/54uzg

Any help would be appreciated, thanks in advance.

 

[extra-medium]

There is no oil pressure getting to the tensioner for the cassette guide. First check your oil level, and top off if necessary, but I would definitely take it back or ask him about it.

 

[Sfgsr1]

Oil level was good but it seemed real thin and instantly soaked up into the paper towel. I will be taking it back tomorrow. Would this be an oil pump or can it be fixed with just an oil change?

 

[extra-medium]

Oil change won't fix that. Not sure if its the oil pump. Mine does that too since I had my chains replaces and I just limit the amount of time I let it idle in park, and I keep a close eye on my oil level.

 

[TechGuru]

When you said "tick" I was thinking the torque converter tick of like 1 per half second but that video is more of a constant rattle than a tick.