SX230HO
Member
- Messages
- 1
- Reaction score
- 0
- Points
- 10
- Boat Make
- Yamaha
- Year
- 2005
- Boat Model
- SX
- Boat Length
- 23
I bought a 2005 SX230 H/O last week with excellent compression testing results. The guy I bought it from sent me videos of the boat running and revving with water hooked up the day before I arrived to compression test it. Since the compression testing passed, I bought the boat and didn't bother running it again with old spark plugs and oil. My mistake, I know.
Fast forward to today after replacing plugs, new oil and filters, new air filters, fuel additives, etc. and I can't get either engine to turn over. Batteries are fully charged and the starters sound healthy. It just cranks and cranks with no attempt at starting.
I've checked for spark by removing a single coil from each engine, attaching a new spark plug, grounding the side of the plug, then cranking. No spark from either engine. On the red wire of the ignition coil connector I get 12V while cranking, but not with key in the on position. I don't suspect the relays are both bad.
I bypassed the lanyard kill switch by shorting both sets of black and white wires and verified both the neutral switch and plug clean out door switches work (they kill cranking properly). Later I even removed and shorted the Brown-Brown and White-Black wire at the connectors to ensure switches can be ruled out.
I've tightened down both sets of battery terminals and verified ECU purple and yellow fuses on both engines (behind the screw off round cover). I also tightened up or verified any ground I could find on the engines.
Considering both engines are experiencing identical issues, I think I can rule out ignition coils all going bad, both ECUs dying, etc. I drove the boat home 2+ hours without transom tie downs (owner said they were not needed) over twisty and bumpy mountain/country roads. I'm starting to think somehow a wire or connector came loose, like a shared ground wire, preventing the ignition system from creating spark at the plugs?
Does anyone have any advice as far as what I should try next? And advice would be much appreciated. I'm running out of ideas and it's killing me not being able to start and use my new boat.
Fast forward to today after replacing plugs, new oil and filters, new air filters, fuel additives, etc. and I can't get either engine to turn over. Batteries are fully charged and the starters sound healthy. It just cranks and cranks with no attempt at starting.
I've checked for spark by removing a single coil from each engine, attaching a new spark plug, grounding the side of the plug, then cranking. No spark from either engine. On the red wire of the ignition coil connector I get 12V while cranking, but not with key in the on position. I don't suspect the relays are both bad.
I bypassed the lanyard kill switch by shorting both sets of black and white wires and verified both the neutral switch and plug clean out door switches work (they kill cranking properly). Later I even removed and shorted the Brown-Brown and White-Black wire at the connectors to ensure switches can be ruled out.
I've tightened down both sets of battery terminals and verified ECU purple and yellow fuses on both engines (behind the screw off round cover). I also tightened up or verified any ground I could find on the engines.
Considering both engines are experiencing identical issues, I think I can rule out ignition coils all going bad, both ECUs dying, etc. I drove the boat home 2+ hours without transom tie downs (owner said they were not needed) over twisty and bumpy mountain/country roads. I'm starting to think somehow a wire or connector came loose, like a shared ground wire, preventing the ignition system from creating spark at the plugs?
Does anyone have any advice as far as what I should try next? And advice would be much appreciated. I'm running out of ideas and it's killing me not being able to start and use my new boat.
