mercury 240 efi

Hello, I have a 2001 Challenger 1800 240 EFI M2 Gen 1. When I start the engine cold, it idles at 1100 RPM (as specs). After running it for a while and getting the engine warm, when I reduce the throttle to idle, it idles really high around 1800 - 2000. Even if I shutdown the engine for 10-15...

Hello Everyone, I have a 2001 Challenger 1800 240 EFI M2 Gen 1. I recently got this boat fixed and had 2 trips only on it. Previous issue was that boat was starting every time, but then dying after 2-3 seconds and the reason was because not all cylinders were firing because of a bad trigger...

Hello Everyone, I have a 2001 Challenger 1800 240 EFI M2 Gen 1. I have this really weird issue, I can always start the engine, not right up, but after few tries. The engine starts, runs for 2 seconds or so and then dies. I fixed few things which were bad, but still have the same issue, but now...

Hi All, Hope you can help, fuel injected 2003 M2 240HP second generation on an Islandia. I have read through the forum posts here, I see others have had this issue but I don’t see a resolution. Starts great cold, run great through all ranges. Pulling a tube running her hard, shut down the...

Hi all, First time post, just bought an Islandia and am restoring it. Today I was cleaning the bilge and I found this water line with a filter and a fitting with loctight on it, just laying on the floor. Any idea where is goes? Looking at the service manual, it does not show this water line...

I have a 2003 sea doo speedster that starts right up and runs for about 1 minute and dies at idle I’m not sure what it could be. I have a video of it dying if that would help anyone with trying to figure out what’s going on. It seems like it’s almost not getting enough fuel but has a brand new...

So here is my story, long time boat owner, just traditional Mercruiser I/Os. I really wanted a Seadoo Islandia Mercury 240 V6 EFI since it is a beautiful deck boat, with an amazing hull design, and much more affordable than say a Tahoe. I was very afraid to purchase it as I have read warnings...

Hi, I need your opinion. I have a Utopia 205 2003 Mercury 240 hp v6 efi engine (2 stroke injection). I suppose it heats up because if I drive down 30 miles / hour when I ask it dies (almost has to turn off), but if I stay at 30 mph and more, I can drive 2 hours without any problem. If I slow...

Hi, I need your opinion. I have a Utopia 205 2003 Mercury 240 hp v6 efi engine (2 stroke injection). I suppose it heats up because if I drive down 30 miles / hour when I ask it dies (almost has to turn off), but if I stay at 30 mph and more, I can drive 2 hours without any problem. If I slow...

Hello! I’ve been stalking the threads for a few hours now because I’m interested in buying a 2002 Islandia - Mercury Powerhead 240 HP two stroke. $4500 The catch is, the ad states “NEEDS NEW MOTOR/ powerhead needs replaced” and that’s honestly the extent of the information. I grew up driving...

Hoping someone can help. So Ive been all over this engine lately trying to figure out why it wouldn't start, Found bad trigger wires coming from trigger assembly and replaced it. The moment I tried to start it, it fired right up. Think I probably cranked it 4 or five times in a couple hours...

Selling my 2001 SeaDoo Islandia Mercury Powered Boat with aftermarket trailer. Have not run it this year but replaced the entire engine 3 years ago after a rod blew on the previous engine and have barely had it out much since due to having a pontoon in the water at my inlaws just down the...

Hello, I just purchased a 2000 Sea Doo Challenger 2000 w/ Mercury v6 240hp EFI that didnt run. The original owner didnt know much about the boat, except that it hasnt ran for a couple years. I replaced both fuel filters, installed a new battery, added new fuel (mixed with the old), and now the...

Dear all I´m the happy owner of a SeaDoo Challenger 2000, the inboard engine is unfortunately damaged (blown-up crankcase and destroyed crankshaft). Could anyone please support me regarding rebuild questions? I have two possibilities: 1: Which engines fits to the M2 Jet drive? Is it...

Hi All Just a quick one. A mate of mine (actually a friend of a friend of a ......) has new OEM Mercury 53-857196 lock rings as used for the OEM Mercury pistons. He also has a set of WSM pistons that do not have lock rings (?). Can these Mercury lock rings be used on the WSM pistons...

Serial number of my engine is 0E427304, and has the large black engine cover and an alternator. All was fine. Did my routine checks on ramp and did quick start of engine. Started like normal after about 2 seconds of swinging. Immediately stopped engine. Launched the boat. After about 10min...