How to Make Your Old 2-Stroke Turn Over Faster in the Cold

How to Make Your Old 2-Stroke Turn Over Faster in the Cold

Boating in cold weather can be challenging, especially when your old 2-stroke Suzuki 85 engine isn't turning over as fast as it should. If you find that even with a fully charged battery, your engine struggles to start in freezing temperatures, you're not alone. Cold weather can increase compression and reduce battery efficiency, making it harder to start your motor. Here's how you can solve this issue and ensure smoother starts on colder days.

1. Check Your Battery's Cold Cranking Amps (CCA)

One of the most common reasons a boat engine struggles to start in the cold is an inadequate battery. If your battery is old or doesn't have enough Cold Cranking Amps (CCA), it might not provide sufficient power to start the engine. A new battery with a higher CCA rating can significantly improve performance in cold weather. Ensure that your battery is rated for cold temperatures and tested properly for performance before heading out on the water.

2. Use a Battery Warmer

Cold weather causes batteries to lose efficiency, so using a battery warmer can help maintain the battery's charge and keep it performing at its best. A battery warmer helps regulate the temperature of the battery, preventing it from freezing and improving its starting ability. If you live in an area that experiences consistent cold temperatures, investing in a battery warmer is a great option.

3. Inspect the Starter and Wiring

If your battery is in good condition, the issue might lie with the starter or wiring. Ensure that your starter motor is functioning properly and that all connections are clean and free of corrosion. Poor wiring or a weak starter can also contribute to slow starts in cold weather. You may want to have your starter tested or replaced if it's showing signs of wear.

4. Try a Lithium Jump Starter

If you're looking for a quick and temporary solution, a lithium jump starter can provide the extra boost needed to start your engine. These small, portable devices can give your battery a jump without the need for another boat or a charging system. They are particularly useful if your starting battery struggles in colder conditions but works fine in warmer temperatures.

5. Keep Your Reeds in Check

While the reeds are unlikely to be the direct cause of your slow starts, they can impact the engine's overall performance if they're stuck or frozen. Reeds act as one-way valves that allow air and fuel to enter the cylinders. If they’re not functioning properly, they can create a vacuum that makes it harder for the engine to turn over. Inspect the reeds for any damage or obstructions, especially if the temperature has dropped significantly.

6. Consider Upgrading to an AGM Battery

If you haven't already, consider upgrading to an Absorbent Glass Mat (AGM) battery. AGM batteries are sealed and tend to perform better in cold weather compared to traditional lead-acid batteries. They're also maintenance-free and have a longer lifespan, making them an excellent investment for boat owners who frequently operate in colder conditions.

7. Conclusion: Prevention is Key

Dealing with a 2-stroke engine that won't start in the cold is frustrating, but by addressing the battery, starter, and potential issues with the reeds, you can get your engine running more reliably. Regular maintenance, such as keeping the battery charged, using a battery warmer, and ensuring the wiring is in top shape, can prevent these cold weather issues from becoming a regular occurrence. With a few preventive measures, you can ensure your boat starts quickly, no matter how low the temperature drops.