John Sukkar
New Member
- Nov 13, 2022
- 14
- Boat Info
- 2006 Sea Ray Sundancer 240, Lowrance 9 Ti2
- Engines
- Mercruiser 5.0 MPI w/Bravo III Drive
Hi team,
I was all geared up today for a boat camping couple of days with my kid and we got 5 mins into our trip and things just went south and we had to turn around. Spent the rest of the day troublehsooting issues.
Some background - Boat had been running fine and I decided to give it a tune up a couple of weeks ago. Plugs, wires, rotor and cap, oil, oil filter and CFM filter - all standard stuff I've done dozens of time. After that I took her out and after 15 mins of running nicely, got water pressure sensor fault. So I called it day, as I was just testing. I went home and changed the sensor (had a spare one) and fault was gone at idle and I packed up.
Today was the first time back out since. Started right up and got under way, after about 5 mins engine started cutting out every 4 - 5 seconds - no alarms. Idling in gear would stall, but idled fine in neutral. We were far enough out that I decided to drift and check a few things - reseated some plugs checking for corrosion etc. After that things got worse. It started doing a single beep every 5 seconds, wouldn't idle for more than a few seconds, started getting all sorts of alarms (TPS, PITOT, Lost Engine Com). I barely limped it back with alarms becoming erratic.
Now it will start but only idle for about 10 seconds before I get the beeping and it dies unless I give it some throttle. Under light throttle it will do the thing where it cuts out every few seconds. It was just doing that in gear before, but now it is also doing it in neutral.
I'm going to start tomorrow morning with checking all fuses, all grounds and terminals, clean and check all plugs on the engine harness and go from there. I don't have a scanner, but I have a Vesselview mobile arriving in the mail in a week or so if that helps. No alarms are thrown with ignition on but engine not running.
Does anyone have any ideas? Could it be a bad coil? What else should I be checking before I head to the mechanic?
Appreciate any help!
Cheers,
John
I was all geared up today for a boat camping couple of days with my kid and we got 5 mins into our trip and things just went south and we had to turn around. Spent the rest of the day troublehsooting issues.
Some background - Boat had been running fine and I decided to give it a tune up a couple of weeks ago. Plugs, wires, rotor and cap, oil, oil filter and CFM filter - all standard stuff I've done dozens of time. After that I took her out and after 15 mins of running nicely, got water pressure sensor fault. So I called it day, as I was just testing. I went home and changed the sensor (had a spare one) and fault was gone at idle and I packed up.
Today was the first time back out since. Started right up and got under way, after about 5 mins engine started cutting out every 4 - 5 seconds - no alarms. Idling in gear would stall, but idled fine in neutral. We were far enough out that I decided to drift and check a few things - reseated some plugs checking for corrosion etc. After that things got worse. It started doing a single beep every 5 seconds, wouldn't idle for more than a few seconds, started getting all sorts of alarms (TPS, PITOT, Lost Engine Com). I barely limped it back with alarms becoming erratic.
Now it will start but only idle for about 10 seconds before I get the beeping and it dies unless I give it some throttle. Under light throttle it will do the thing where it cuts out every few seconds. It was just doing that in gear before, but now it is also doing it in neutral.
I'm going to start tomorrow morning with checking all fuses, all grounds and terminals, clean and check all plugs on the engine harness and go from there. I don't have a scanner, but I have a Vesselview mobile arriving in the mail in a week or so if that helps. No alarms are thrown with ignition on but engine not running.
Does anyone have any ideas? Could it be a bad coil? What else should I be checking before I head to the mechanic?
Appreciate any help!
Cheers,
John