1999 Mustang Cobra with tick/knock in pass. side head
Hello all, I'm new to the group here and I'm hoping to get some experienced advice here. I've got a 1999 Cobra that has slowly developed a tick in the front of the passengers side head. I've scoured the net and found reports ranging from a rod knock to worn valve guides. This seems to be a known issue from 1999-2005 from what I've gathered on several google searches and you tube videos. It is as quiet as a church mouse when the motor is cold but once it comes to temp. it's quite annoying (and embarrassing). It has become progressively louder over the last 3-5 months. I can feel it in the valve cover by touching it. I'm planning to pull the cover off and have a look later this week. Can anyone shed any light on this?
On another note, I can't find a recall sticker under the hood and according to the dealer, my car has never been in for the intake manifold mod to unleash 30 horses out of a design flaw. Without pulling it apart, is there a way to verify this? I've driven other Cobras that seem a bit peppier than mine.