Re: MARINER ??
Can't answer the year thing. But if you are overheating, you might have clogged water passages, or a bad impeller (water pump) you need to find out if you have enogh water cooling the engine. You can buy temperature strips from an automotive supply that adhere to your cylinder head, and will indicate the temperature. Alternatively, you should be able to hold your hand on the head for a few seconds. If things are working right.<br /><br />If you are concerned about oil injection, premix some 50:1 gas and oil, and then fill your oil tank, or mark the level in the tank. After about six gallons of use, the tank should be down about 16 oz (a pint). If it is, your oil injection is working. Since you will be running heavy on the oil with this test, you may want to decarb afterwards.<br /><br />good luck