compression

[biggs]

well my car will not start and i think it is because my headgasket is blown. my question is i did a compreesion test without the car warm and i don't know what these readings mean from left to right they are 90, 50, 65, 90 do you guys think they would be better if the car was warm also i found that my ecu was burned and thats another reason why i think it will not start . when i change the ecu what else should i change besides the throttle position sensor.

 

[Endz0r]

even if the car wasn't warm, the difference between the cylinders shouldn't be 90 and 55. that's a big gap.

 

[biggs]

so its the head gasket or head with no doubt

 

[dsmracer81]

yes most likely it is the head gasket, especially if cylinders 2&3 are soaked in coolant..it would not run or if it would it would be very crappy and smoking like a civ