Hello! I just bought an alumicraft with this engine. It had been in storage for 3-4 years. It ran great a few times. Now, when I go to start it, an alarms sounds for a few seconds and it won’t turn over (except it did once but didn’t start and then went back to not turning over) Batteries are charged. Checked the kill switch. It has a separate oil tank with a primer bulb. It primes a chamber near the engine. Any trouble shooting ideas?