2001 Islandia 240 EFI - runs awesome, shut off for a few and won’t start for 20-30 minutes

[rmtworks]

I have a 2001 SeaDoo Islandia and just had a shakedown cruise for the year today. Started outta the box with 2 new batteries in parallel to make sure I don’t run out of juice (which had happened a few times, so now I have a solar trickle charger on at all times).

We ran for an hour or so, shut her off a few times to let the kids take a dip. Them after sitting for perhaps 10 minutes, she’d crank but not start. I smelled fuel and assumed flooded.

It would not start so we got towed to a dock and 30 minutes later, started right up and I boated hard for 20 minutes to clear her throat.

I read about head temp sensors, new plugs and other things. I’m gonna try and get some new plugs tomorrow, and some fuel conditioner (had 1/4 tank of last season’s fuel).

Would anyone have an idea of what to look at while away from my home shop?

 

[Tim75]

I have a 2001 SeaDoo Islandia and just had a shakedown cruise for the year today. Started outta the box with 2 new batteries in parallel to make sure I don’t run out of juice (which had happened a few times, so now I have a solar trickle charger on at all times).

We ran for an hour or so, shut her off a few times to let the kids take a dip. Them after sitting for perhaps 10 minutes, she’d crank but not start. I smelled fuel and assumed flooded.

It would not start so we got towed to a dock and 30 minutes later, started right up and I boated hard for 20 minutes to clear her throat.

I read about head temp sensors, new plugs and other things. I’m gonna try and get some new plugs tomorrow, and some fuel conditioner (had 1/4 tank of last season’s fuel).

Would anyone have an idea of what to look at while away from my home shop?

Sounds like a bad TPS. You hope not. Many threads here about how to check it. Also in the service book. Need a voltmeter.

When the TPS fails, it sends the engine to "full rich" which can flood the engine, even though it is EFI.

 

[rmtworks]

Thanks for your reply. TPS = throttle positioning sensor?

After about an hour sitting on the dock, she started right up. I moored and the next morning had a great day w/o any issues at all.

I’ll check my TPS though and see what I find.

Thanks again.

 

[ripcuda]

Possible hot restart issues. I had it with my 240efi. It floods when trying a hot restart and will crank and crank but won't start. Pull plugs... they are wet. In my case I had a few leaking injectors that allowed the fuel pressure to bleed off into the crankcase when engine was shut off. If left to sit long enough... excess fuel would evap... and it would start normally. But on a hot restart without much time... engine would not restart due to being flooded. I had my injectors pro cleaned/tested/adjusted. Helped my issue greatly. Brucato FIS did my injectors.

 

[TimOare]

Ha! Same issue on my 240, here’s the thing crank crank crank smell fuel. Wait 20 min when it cools fires up and lots of smoke from the unburnt fuel.

What I found, ECU decides it does not need a little bit of fuel to start when it’s hot and cranking a lot adds to much fuel so it won’t start.

Try this- do you have the idle up feature when you turn your wheel left or right? If so, crank it to max position to engage, start your motor. It work on my 2003. If that is not setup, have someone give it fuel via throttle linkage on motor -port side and start the boat.

Do you have a service manual? Check the throttle linkage is setup correctly. It may not be.

 

[WolfKnight]

Had same issue, replaced TPS it fixed it.