Hi,
If you are certain it isn't related to a head gasket and you have done all the things listed, it really is limited.
When the vehicle is running (prior to overheating), does it run properly? Is there any power loss that may indicate a possible restriction in the exhaust?
Also, are there any diagnostic trouble codes that may be related to ignition timing?
Let me know.
Joe
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Tuesday, June 18th, 2024 AT 8:11 PM