If you think you have a head gasket leak, the most definitive way to check is to get the coolant checked for combustion gases. This is done using a kit that has a liquid that changes color when/if combustion gases are passed through it as draw from the cooling system. You can either find a shop that does this, or find a source that sells it to the public. Another way to check for possible head gasket failure is to remove all the spark plugs, keep track of which cylinder they came from, and look for a perfectly clean one (steam cleaned from the coolant), and or wet with coolant. Another way is to check the oil and look at the color, if the oil is tan or butterscotch color, there is water in the oil, and possible bad head gasket failure. To check for a cooling system leak, try putting UV dye in the coolant, then search with a "blacklight" after running a while under pressure. Sorry it's been a while to respond, hope this helps.
Hey man how's it going..so I replied to your message on my post about my possible head gasket leak but it hasn't gotten posted for some reason... wondering if you might have any more information about what's happening with my car? Coolant overflow out the reservoir when I turn engine off ..didn't overheat though. And I did a pressure test and have a very slow leak somewhere..could that be causing this? Like I say this never happened before I started doing a few flushes...seems very strange.
