see if your oil looks like chocolate or just has water in it
I hate to tell you this but I just paid $3,500 at the Nissan dealer for head gasket replacment.
look at your engine oil you may have a leaking head gasket
A compression test will tell you if a head gasket is blown on ANY engine. Also, white smoke tells you that your burning anti-freeze, which means a head gasket is blown.
A dye test will tell you if your head is damaged in the event of a blown head gasket. It turns colors anywhere it is leaking on the head, hence where any cracks would be.
Just look at your engine oil and you can tell, if it looks milky there is water getting into the oil and that's the sign of a blown intake gasket or head gasket.
Check your cylinder pressure with a compression gauge. The gauge will hook up to your spark plug openings.
Either a leaking intake manifold or a blown head gasket. You can take it to a repair shop and have a block test done. That will tell you if it is a head gasket. DO NOT drive anymore than needed as the water will destroy the engine bearings.
antifreeze in the oil should be a milkshake color
Pressure test the cylinders, but smart money will replace both.
A compression test will verify if the head gasket if blown or not, the majority of the time.
Any smoke ( blue ) coming out the exhaust ?
Two places will tell you, 1st is on the drivers door, there will be a "tag" withthe tire type and pressure, but look on the side of the tire (#2) it will tell you the max tire pressure.