My talon lets out a sound like marbles whenever the rpms fall around 1000 or below around the upper part of engine in the middle of the head, but goes away above 1100 and then comes back at 5000. I am at wits end! I pulled the head off and took it into a machine shop where they checked it, shaved it down, replaced the valve guide seals. I also replaced the pistons with some 4g63 instead of the 4g63t and gave them new piston rings and bearings. checked for the clearence between the head and pistons and came out perfectly. If you have any suggestions for me to check on I would love to hear them

Cars & Trucks - Eagle - Talon - 1992 Eagle Talon