How will i know which head gasket to change on my ford ex

If you've already changed the head gasket why would you need to get the cylinder heads pressure tested now? It's too late for that. That's something you do BEFORE you replace head gaskets.

Are you able to turn the engine over manually? Did you try to turn it when the head was off the see if it was seized or not? Changing a head gasket simply keeps the fluids in the right spots and creates a seal for the pistons. It has nothing to do with cranking.

Are you able to turn the engine over manually? Did you try to turn it when the head was off the see if it was seized or not? Changing a head gasket simply keeps the fluids in the right spots and creates a seal for the pistons. It has nothing to do with cranking.

Sounds like a head gasket leak on the intake side or intake gasket. Your boost is leaking out and coolant is leaking into the cylinder. Get a bulletproof kit. It is well worth the money

Dear Sir,
For replace head gasket you no need to remove engine you can replace gasket there only but you have to remove cylinder head and do head facing and then put it back with new gasket thanks.
yogesh

Hi ...i suggest changing your head gaskets ...it will come in a complete kit ....do it all ....just looking at a gasket ..some times it hard to tell .....once you take the heads off always change the gaskets ...never will properly seal again ....

White smoke out of the exhaust is one indication that the head gasket is blown. Another is to start the car and check the oil on the dipstick. If it's frothy or looks like a milkshake, this is another indication of a blown head gasket. The milky appearance indicates that coolant is in your engine, caused by a bad head gasket. If none of these symptoms occur, then the problem lies elsewhere. Hope this answers your question and feel free to post back with any other concerns or questions. Thank you.
Greg

I would change both, as well as use new head bolts. Make sure your heads are not warped or cracked, especially the one that is leaking. There may not be any need to change the head if it is not cracked. These are prone to blowing a gasket especially after 150K miles or so. It will not cost a huge additional amount to change both head gaskets since the engine will have to be disassembled down to the heads anyway. Hope this helps you, Rick

first up , if there was no compression test done to determine if the head gasket is in fact at fault then do not take that persons word for the fault
the original problem could be blocked radiator cores that could handle the extra cooling required by the long trip at speed, could be a problem thermostat or radiator hose collapsing
while you may now have a problem head gasket / warped/cracked head that is just the symptom of a failure elsewhere
from your statement I would recommend that you find an accredited service center with experience on your make of vehicle and get proper diagnosis and quotes as it will cost you a lot more from your inexperience if you diy

If there is oil in the radiator - DO NOT DRIVE THE CAR. You are risking serious engine damage. After you change the head gasket, you must change the oil and the antifreeze. You definitely have at least a blown head gasket. On the bright side you know for sure which head to take off.