Suzuki Outboard Engine Control Units

Suzuki Outboard ECU (Engine Control Units) - Resources & Information

PartsVu stocks a complete selection of Suzuki Outboard Engine Control Units for your Suzuki Outboard Motor. Choose Suzuki OEM ECU and accessories for your specific Suzuki engine model. We offer same-day shipping and the lowest prices you’ll find online. 

In addition Suzuki Outboard Engine Control Units , PartsVu is also proud to help boaters by providing helpful resources for Suzuki outboard motors:

• Suzuki Outboard Engine Oil Capacities & Oil Filter Chart
• Suzuki Outboard Engine Gear Lube Capacity Chart
• Suzuki Outboard 100-Hour Service Checklist
• Suzuki Outboard Season Breakout Guide

Suzuki Outboard Engine Control Units FAQ

What should I know about my Suzuki ECU?

The following info clarifies what your Suzuki Engine Control Unit does and some other basics about Suzuki ECUs: 

• The engine-control unit calculates such things as air and fuel mixtures and precise timing. As part of the automated outboard controls system in your Suzuki engine, ECUs that malfunction lead to rough performance or may even prevent your Suzuki engine from starting up altogether.
• The ECU is often mistaken for the “stop start switch” or “start stop switch”, which is actually the ignition. Similarly, the ECU is automatic and also mistaken for the throttle, where boaters can manually change the engine’s performance. 

Why did my Suzuki outboard motor stop working?

Your Suzuki outboard ignition system is responsible for firing up the engine and keeping it running. Because checking this system may involve sparks and heat, keep flammable liquids away. 

The first part of the ignition system to check is the spark plugs. Clean and adjust the spark plugs– they may need to be replaced. Check the ignition spark with a spark gap tester. If you’ve got a good spark, make sure that the air gap is within specification. Adjust it if needed. 

If you have a good spark and the gap is within specification, the problem will likely not be found in the ignition system.

However, if you don’t have a good spark, salt buildup on the spark plug caps or ignition coil leads could be causing problems. You’ll also need to check both the spark plug caps and ignition coil leads for proper resistance. Replace degraded parts. When there is no salt buildup and both parts have proper resistance, check the ECM output peak voltage.

If your spark plugs don’t seem to be the issue, check that the electric oil pump and oil level sensor are in good condition. If so, check the reed valve for its condition.

How do I start my Suzuki outboard engine? 

Suzuki makes a 2-stroke outboard engines and 4-stroke outboard engines. The 4-stroke engines have risen in popularity due to their reduced noise, fuel efficiency, and greater longevity. Because they’ve grown in popularity in recent years, most of them tend to be newer. Typically, electric start outboard engines are as easy to start as tilting them down and turning the key. 

In contrast, a carbureted 2-stroke may not be as simple to start.

1. First, tilt the engine so that the fuel can more easily reach the carburetor
2. Prime the bulb until it’s too hard to squeeze
3. While in neutral, advance the throttle to â…”
4. Turn the key, push to choke and crank
5. Release the choke and return to neutral

How do I perform a leakdown test on my Suzuki outboard engine?

1. Step #1: Begin by carefully removing the top Suzuki cowling, Then, remove the ignition coil cover at the rear of the motor.
2. Step #2: Remove the spark plugs. Be sure to lay the spark plugs in numbered order to reinsert or replace them after the test.
3. Step #3: Remove the flywheel cover from the top of the motor.
4. Step #4: Mark the flywheel with a marker at 0°, 120°, and 240°. These positions will indicate where you’ll rotate each pair of cylinders to the top-dead-center positions (see Steps #11 and #12 below).
5. Step #5: Rotate the crankshaft with your ratchet and socket to the top dead center for Suzuki Suzuki cylinder #1.
6. Step #6: Adjust the regulator on the leak down tester to 0% to calibrate it for an accurate reading. 
7. Step #7: Connect the leak-down tester by screwing it into the spark plug port at cylinder #1. Next, connect the tester to the compressor and take a measurement. Be sure to firmly hold the crankshaft to prevent it from rotating.
8. Step #8: Rotate the crankshaft 360° (one full rotation) to put Suzuki cylinder #4 at the top dead center.
9. Step #9: Connect the leak-down tester to cylinder #4. Then, take a measurement while holding the crankshaft to prevent it from rotating.
10. Step #10: Set Suzuki cylinder #3 to the top dead center at the 120° mark. Next, repeat step #7 through Step #10 for Suzuki cylinders #3 and #6.
11. Step #11: Set cylinder #2 to the top dead center at the 240° mark. Then, repeat step #7 through Step #10 for Suzuki cylinders #2 and #5.

Step #12: Replacement is the same as disassembly. Be sure to replace spark plugs in numbered order and apply an anti-seizing lubricant on the threads for easy removal/replacement in the future. Also, firmly reattach the ignition wires for a solid connection.

Why won’t my Suzuki outboard start?

If your Suzuki outboard doesn’t start, you’ll need to start from the most obvious causes, then move to more complicated possibilities. Here’s a run-down:

• Make sure that the kill cord is attached.
• Because your Suzuki outboard won’t start in gear, ensure the engine is in neutral.
• Inadequate fuel supply is a common issue, either from pinched hoses or a lack of fuel in the gas tank(s).
• Make sure that there’s no water in the fuel lines. Perform a visual inspection in the water separator bowl for traces of water.
• Look for fouled spark plugs (more common in small engines). If any fouled plugs are discovered, replace them with new spark plugs.
• Test your battery to ensure that it has adequate voltage. If it is underperforming or dead, consider replacing the battery and checking for any shorts that may be draining it.

For more info on troubleshooting your Suzuki outboard engine, be sure to read our blog “Suzuki Outboard Running Rough, Won’t Start, or Stopped Running” for a complete run-down of the most common issues you’ll face.

How do I perform a 100-hour service on my Suzuki outboard engine?

To ensure proper engine function, it’s always best to service your Suzuki outboard engine every 100 hours after the initial break-in period (first 10 hours) and after the first maintenance interval (at 20 hours). 

The following is a Suzuki outboard 100-hour service checklist to help you service your engine properly:

If you want a more in-depth explanation of how to perform a 100-hour service on a Suzuki outboard engine, read our blog “Suzuki Outboard 100-Hour Service Checklist”. 

To make engine maintenance even easier, PartsVu has a wide selection of Suzuki outboard engine 100-hour service kits available. They’re pre-assembled with everything you need to keep your boat happy and healthy every 100 hours.