Help my AE82 Fxgt sounds likes a 1980s diesel at idle. Has a loud ticking noise comming from the head. Any ideas what it can be? It has only started in the last few weeks and am a little concerned about that it can be. The engine still goes fine and still hits redline with no issues but when idleing it sounds like a diesel tractor.
Engine is a 4age silvertop.
Thanks