You don't have to get "Creamy" stuff in the oil when a head gasket blows. At all depends on the design of your engine and where the gasket blew.
When you drive for extended periods on the highway, does the car overheat? (Above 55mph) Do you get any smoke out the tail pipe during the first few minutes of start up? These are signs of a blown head gasket.
A quick way to check:
Remove the resevoir cap and rev the motor a few times to 1500 rpm. If you see large bubbles in the coolant, blown gasket. (This isn't a foolproof method)
Also, feel both upper/lower radiator hoses after it overheats. If one is too hot to touch, and the other is barely warm, blown gasket.
The reason for this is there are exhaust gasses blowing through the leak in the gasket. This causes bubbles in the cooling system that get trapped in the block, heater core and radiator. This prevents the coolant from circulating. Thus the overheat issue.
Now if you eliminate this as a cause (Suggest the above to your mechanic), then make sure the fan/fans are coming on, make sure your cooling system is holding pressure, and have the system pressure checked. Finally, make sure the system is bled of all air.
Friday, December 24th, 2010 AT 2:18 PM