jweizer07

i am new here so here goes i have a 99 cobra 4.6L 4 valve ran hot did compression test all are at 175 except the two middle cyls. on drivers side. they were # 6 145 and # 7 .135.i seen white smoke out exhaust one morn but never seen it again and never ran hot. wife drives about 5 miles a couple days later said it pegged the temp gauge i am thinking blown head gskt . i bought a block tester kit will that tell me anything for sure or is there anything else i can check motor has about 60,000 miles need some help thanks

pure_kaos

What does the oil look like? What was the coolant level at after your wife noticed the temp pegged? Symptoms of a blown head gasket are:

• White smoke from the exhaust pipe.
• Bubbles in the radiator or coolant overflow tank.
• Overheating engine.
• White milky oil.
• Fouled spark plugs.

jweizer07

the oil is clean not milkey i put about a gallon of watwe in the overflow started the car and waited for the temp to get up to normal and tested the block with a block tester and it took a little bit but the fluid turned yellowish after a little bit i then shut it off and the overflow went down quickly and i havent done anything since then except put the overflow cap on it. it didnt run hot when i tested the block and there wasnt alot of white smoke either in fact the smoke that was coming out the exhaust disappered rather quickly lile it was condensation