My daughter’s Elantra overheated. The radiator was replaced along with the thermostat. The engine runs well and the compression test results were good (# 1 - 145, #2 - 150, #3 - 150, #4 - 155). Given that information could we have a blown head gasket?
Also I would like to get some help in changing out the fuel filter. I cannot figure out how to remove the bottom (input) fuel line. The top one just pops out after you remove the screw. The bottom fitting is obscured and I don’t know what to do. There is a 19 and a 17 mm hex head down there but nothing wants to give.