Hey guys, how common are manifold leaks on the 460? My 2013 has 73k miles and I've noticed a ticking sound that almost sounds like an exhaust leak but I only hear this when my front windows are down at lower speeds and low throttle input (can't tell if happening at higher speeds due to wind drowning out the sound). No ticking sound at idle, in park, etc. I can't hear this with the windows up either. I can try to post a video but the few I've taken aren't very clear.
I changed my oil just prior to hearing this sound with the recommend 0-20W Mobil 1 but am not sure the sound occurred as a result of the oil change since I live in Southern AZ and I've had my windows up all summer. I saw a thread while researching (on FaceBook) that indicated some people have loose spark plugs that were the culprit of this ticking sound. So, being that the GX is newish to me I went ahead and put in some new NGK's but the problem persists. Perhaps its a timing chain related issue or bad fuel injector? I don' have any check engine lights and it seems to drive normally for a heavy pig with 300 HP
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I'm going to pull the front wheels off this weekend to see if I can find any evidence of manifold leaks but thinking I'll take it in for diagnosis at the dealership next week. Any ideas?
I changed my oil just prior to hearing this sound with the recommend 0-20W Mobil 1 but am not sure the sound occurred as a result of the oil change since I live in Southern AZ and I've had my windows up all summer. I saw a thread while researching (on FaceBook) that indicated some people have loose spark plugs that were the culprit of this ticking sound. So, being that the GX is newish to me I went ahead and put in some new NGK's but the problem persists. Perhaps its a timing chain related issue or bad fuel injector? I don' have any check engine lights and it seems to drive normally for a heavy pig with 300 HP

I'm going to pull the front wheels off this weekend to see if I can find any evidence of manifold leaks but thinking I'll take it in for diagnosis at the dealership next week. Any ideas?