2002 Islandia won't start hot after sitting for 15 mins or so

[uptop]

Hello, I just bought a 2002 Islandia that I have only had out twice. First time was to test drive it and it ran great, however second full day out the boat would intermittently not start hot after setting for 15 - 30 mins. Then it would suddenly fire up. I've read a ton on this forum about a failing temp sensor as it does appear to be getting to much fuel as it blubbers and dies, as well as letting it set for another 30 mins will fire right up on the first try. The Port temp sensor 13536A14 in question does not appear to be on my motor for 2002 but rather 2001. Is there a way to give this boat a little gas when this condition occurs? I have read turning the steering wheel to one side to kick in the steering assist idle bump? Does this truly work consistently for anyone? I did purchase the temp sensors for my boat for giggles but don't think it's the issue because it doesn't smell like it's burning any additional fuel at any other times. I have had many years experience with outboards and other 2 cycle motors but this is my first inboard\outboard in an enclosure like the islandia. Any assistance would be greatly appreciated. Thanks...

 

[Coastiejoe]

Are you running the blower motor?

Open the hatch or run the motor for 5 minutes. It is a common issue for the air to be hot and have less oxygen within the engine compartment. When cruising, the side vents puts fresh air into the compartment, when sitting, no fresh air enters.

 

[Dr Honda]

Yep, what he said.

My islandia is hard to start when warm, and after sitting. But if I turn on the bilge fan, it starts up easy.

 

[uptop]

Thank you so much for the responses, I don't run it for 5 minutes and received my manual in the mail today which I see clearly states to run it for 5 mins. I pray it is that easy. The blower is very noisy so I did order a new 4" blower which I plan to install as well. Thanks again...

 

[Dr Honda]

Just as an FYI.....


You are right about the "2002 engine doesn't have the port side temp sender." BUT, it's VERY unlikely that your 2002 islandia, actually has a 2002 engine. The reason is, seadoo was buying engine from Mercury, and they had a surplus of 240 EFI's. Because of that... we have seen the 2001-1/2 engines all the way the mid 2003 model year.

SO... the quick check is... look at the top cover on the engine. Is it round, and just coving the flywheel? Or is it large and more rectangle shaped? If in doubt... just post a picture of your engine.


It's very important to know, since most of the support parts are different.

 

[uptop]

Hello,

I had the boat out again today, I put new plugs in and was planning to do the temp sensor but only have the 2 wire sensors and didn't see it as a common problem. The issue with the boat was much worse today. It runs great above 3K rpms but when idling the boat cuts out and the alarm chirps and eventually comes on steady, ultimately the boat dies. From what I noticed the led on the battery switch is lit but also noticed the horn switch LED lit at times as well. To me it acts like some kind of short but I can't find it, the engine bay looks like new and has dielectric grease on all connections. Could this be an issue with the throttle guardian? My motor is a 2001 0E406560, any help would be greatly appreciated.

 

[Dr Honda]

Wellllll..........


From that serial number.. you do have a 2002 engine. I'm very surprised.


But, from the description now... it sounds like a short, or cut wire of some kind. Mice like to get into boats and chew on wires during the winter. I would get behind the helm, and check things out.

Yes... the throttle guardian can cause all kinds of strange problems. I would disconnect it. (Mine has been gone for the past 4 years)

 

[uptop]

Dr. Honda, What's weird is it works fine above 2500 to 3k rpms, you would think if it is a short you would see the issues at other RPM ranges. I will disconnect the throttle guardian to rule it out. What wire do I disconnect under the helm? I'm not familiar with this module. I also noticed the battery is a 750 cca car battery not a marine battery and is about 3 yrs old so I plan to replace that as well. I feel like the beep is coming from the ignition cutting in and out and eventually a long beep like the battery is dead, but wouldn't expect this when the boat is running\charging. I'm going to bring my multimeter out this weekend and check the voltage while running to see if it's charging at idle.

 

[Dr Honda]

The throttle guardian has a bunch of wires going to it... but all you really have to do is cut the black/yellow wire. That's the kill wire for the system, and it will ground it. So... cut it close to the unit, and tape it off. But leave enough wire to hook it back up if you decide so later.

 

[uptop]

Dr Honda, I replaced the key switch yesterday and installed a good 1000 mca decka battery, same issue with the boat, runs fine above 2500 rpms but cuts out and dies below that, still seems electrical. Sometimes it starts back up sometimes it doesn't, had to get towed for the 3rd time since I had the boat (it's only been 3 weeks). I looked under the Helm and don't see the throttle guardian. The only black\yellow wire I see is the kill switch wire coming from the harness. Other than that just the fuse junction panel. I'm not sure if it was already removed or if I'm missing it completely, not sure how, I looked up the part so I know what it looks like. I'm assuming the only access to the helm is through the snap panel in the bathroom correct? I'm stumped on this boat and it's driving me nuts. Thanks for all the help...

 

[Dr Honda]

hummmmm..............................................................



So... at top RPM... it's up at 6000??? And the boat is getting over 40 mph? I think "Factory" said 43~44 MPH was it. (Mine will get up to 49 mph)


How do you control it, if 2500 rpm is the minimum? (must be rough)


Well... a short vid would really help me out. If it was a 210 engine... I would say you have a bad switch box, or stator... but that isn't the issue with the newer 240's.

Does it sputter and die... or does it just shut down like the key is being switched off?

 

[uptop]

It runs perfect above 2500 rpms, about 46 mph and I can run at 3K and it works fine. You hit 2500 it cuts out like it's losing spark. I will idle for a few seconds than die.. Sometimes it starts back up, sometimes it doesn't. I was able to get it out of the marina and make a loop around the lake, I slowed it down to see what RPM the issue appeared for sure and like I said it was 2500 then I shut it off to look for the Throttle guardian, noticed I was getting close to the rocks so I went to start it and of course would not fire. I should of checked for spark at this point but was mainly concerned about getting my boat away from the rock face. I towed it back once again.. Big problem here is I can only work on it at the marina because I can't bring it home due to HOA restrictions. Messing with it in the marina when it is 105 degrees without the right tools is painful to say the least. I was fed up with it this weekend and pulled it into a Merc dealer so I'll see what they say. I have had several boats, jetski's, snowmobiles and have never resorted to taking it in but my lack of resources with this size of a boat has me against the wall.

 

[Dr Honda]

Are you getting a warning light?

The other thing that can be wrong is the MAP sensor is sending a bad signal.

 

[uptop]

When it cuts out the battery led flashes briefly, which is why I thought it was the ignition key switch or a faulty battery. No such luck.. Where is the throttle guardian normally mounted under the helm? I attached the image of what I'm picturing the module to look like.

 

[uptop]

Well I'm making progress.. The DDT indicated a ground issue and to make a long story short reseating and adding dielectric grease to the bottom harness on the ECM took care of the idle\cutting out issue. The boat is back to normal however I still have the warm start issue. If I let it sit for 10 mins or so it will not start. Threw in the anchors and went swimming for another 15 to 20 mins and it fired right up. Drove the boat about 10 miles and let it sit on the beach with the rear hatch up for about 30 mins and it started without issue. I bought the port side temp sensor a few weeks ago so I'm going to toss that in for craps and giggles buy not sure that is the issue. When it was at the dealer I forgot to turn the battery disconnect off and had a battery alarm when I turned the blower on before I put it in the water as well as when the no start issue occurred. After driving it for 20 miles round trip I didn't have any battery alarms. Any suggestions would be most appreciated. Thanks..

 

[Dr Honda]

On the islandia... look inside the helm. So... pull the cover in the changing room. Then, look inside, and you will see the throttle guardian to the left of the fuses.

It still sounds like a "Fumes" issue. (Since it was OK with the deck lid up) Next time it wont start... put up the deck lid, and run the fan for a couple min. I bet it will start.


Also... on the islandia... there should be several long vent tubes dangling down from the deck lid. If they aren't there... then it wont pull the fumes from the bottom of the bilge, and that could be an issue too. When I got my boat... only one was there. (should be 4 of them)

 

[uptop]

Hey Dr. Honda, thanks for the response, I don't have any the guardian mounted next to my fuses. Either it's been removed or is in a different location on my boat. When I put the new key switch in I had all the wiring unwrapped in the wiring harness and didn't see anything that wasn't connected etc, so not sure where the heck it would be. All 4 vents are in place the only thing I did notice this week is one of them (rear exhaust vent) was flush with the hull sitting in a little water, so wasn't able vent properly. I agree with you, either it is vapor related or a heat soak issue which in both cases opening the hatch will resolve but need to get to the bottom of why it happens. Thanks...

 

[uptop]

I replaced the port side type sensor (mine it the 2 wire style, not the brass one that is prone to failure) and the boat worked perfect for the first time since the night I bought it. Matter of fact I towed another boater that had broke down to the dock, weird change of events for a change. I want to thank you for you help diagnosing this issue..

 

[Dr Honda]

Glad I could help.