Mr.T

Gasket probably, but it has to come apart regardless. I would not try any of the stop-leak additives, doubtful they would work on a leak that large plus the heater core and/or radiator can get restricted.

Sounds like you're probably not doing this yourself, but in any case touch base after it's apart.

rocker730

Yeah hopefully it’s gasket. I saw it looks like a mating surface but wasn’t necessarily sure. Now, that’s the real question of the hour. I know a little bit about a few things, but overall, engine repair knowledge is pretty scarce. I mean, I’ve replaced my radiator and hoses and haven’t had any issues with the coolant until just now. So technically what I’ve done is still holding up nice and strong 😎 how feasible would it be to replaced gasket myself? Or would I be better off taking it to a shop?

Mr.T

At your experience level, take it to a shop, maybe get estimates from a dealer and a couple other shops. It's more technical and time consuming than it appears, plus there is special tools to pull the crank pulley, etc. After it's apart, the timing chain should get inspected for excess play -- There is a spec and method to measure the play in place so it's not just a wag.

Dutch44

Good morning , I have a 2008 JK that has that same leak did you get yours resolved ? Thank you

DjCO2

Same leak here and it is not the lower intake manifold gasket. Did the timing cover gasket replacement fix the leak? Thanks!