Went trolling yesterday and one of my engines starting running rough and low on power.Got home and pulled the dip stick and found the oil to be very milky.The engine did not overheat and only the ckeck engine light came on.I am thinking it's a head gasket and and am thinking of doing the repair myself.The engine was running fine before then.repair myself.What else should I check and be aware of.All ideas will be greatly appreciated.
Aloha
Aloha