My 1989 40HP Oil-Injected Mariner runs as it should when in motion. When I stop and the motor idles for a few minutes it starts beeping and the oil low light comes on. It has plenty of oil in the reservoir. <br /><br />I was wondering if it has an air-hole (like the gas tank) that could be stopped up. The reason is that when I check the oil by taking the cap off it seems to stop beeping. <br /><br />What could be the problem?<br /><br />I greatly appreciate any and all responses!<br /><br />Thanks in advance!