Lost Power to Ignition

jared.m.gudenkauf

New Member
Dec 27, 2008
9
Prairie Village, KS
Boat Info
2012 370 Sundancer

For Sale:
2000 310 Sundancer
Engines
Twin 8.2L Mercruisers with Axius
I was trolling along at 1,400 RPM and lost all power to the starboard engine. When I attempted to restart, Tach went crazy while there was no sign of the engine actually trying to crank. Now, there is no buzzer sound on the starboard ignition switch. This leads me to believe this is a fuse/breaker/short issue and nothing related to the starter, coil, or points. Has anyone come across an issue like this?

It's on my 2000 310 Sundancer.
 
Check your battery that provides cranking power to your engine - it could be totally shot.

This would be a good place to start. However, I used the emergency start switch to connect to another battery for starting and still had nothing at the switch.
 
A dead short in the battery might still cause this. What does your dash gauge read before and during the attempt to engage the starter?
 
Pull out your ignition switch for that motor and check with a 12 volt test light to see if the red wire coming from the battery has power. Ignition switches go bad.
If you have no power there, then use the 12 volt light to work your way back through the system.
 
Thank you all for the input an ideas. I'm headed to the lake this morning to see if I can work it out and will reply back.
 
A dead short in the battery might still cause this. What does your dash gauge read before and during the attempt to engage the starter?

When the issue first occurred, the Tachometer was going haywire (0 RPM - 4,500 RPM). Now, I get nothing.
 
I found the ignition issue to be a melted fuse on the starter solenoid. I replaced it, carefully turning power from the batteries back on and now had power at the ignition. The starboard engine would now crank, but there was no signal to the fuel pump and therefore, no fire.

Tracing the wiring diagram, I checked the fuses and relay and had no issues. The relay was't getting a signal but was functional when swapped with the port side. I swapped the ECU as well and still had not found the issue. I ended up thinking the MAP sensor was the issue. I thought we were right when we switched the MAP sensor from the port engine to the starboard engine and the port engine fuel pump primed and then the engine started. Thinking we had solved the world's problems I bought a new MAP sensor and now both engines will not start. It makes no sense to me. Both are experiencing the same issue, no signal to the fuel pump.

Any insight would be appreciated.
 
I had something weird happen yesterday. After a great day on the water when I went to start the STB engine with the generator on the engine wouldn't crank. If I pushed the emergency start the engine would crank but not start. The port engine started and ran fine. When I shut off the generator everything was normal. While the generator was running I had the A/C converter switch on. Is there a safety that prevents the engine running with the battery charger on?
 
I had something weird happen yesterday. After a great day on the water when I went to start the STB engine with the generator on the engine wouldn't crank. If I pushed the emergency start the engine would crank but not start. The port engine started and ran fine. When I shut off the generator everything was normal. While the generator was running I had the A/C converter switch on. Is there a safety that prevents the engine running with the battery charger on?

I am not familiar with such a safety. I usually start mine while still on shore power and disconnect while the engines are warming up.
 

Forum statistics

Threads
112,948
Messages
1,422,804
Members
60,930
Latest member
Ebrown69
Back
Top