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have you checked the 5 amp fuse near the VST

This post is more for anyone that may have the same issue. Also very important to have service Manual for your motor as it walks you right thru testing if you are not familiar with it. Over the weekend we had our Islandia have trouble starting after a few day of rain and bilge pump had been...

Trust the VVM readings and not the guage readings. Best tool I ever bought for our 250 Opti was VVM Any Speedo on a Boat or Snowmobile is a Dream-o-meter. VVM uses GPS and is directly connected to motor for RPM's I belive the 240 should be around 5800 rpms's but if you have the Service...

if the oil sensor is bad it would put the boat in limp mode as the computer thinks the boat is low on oil. Limp mode only dumps more oil in so you will smoke a ton and limits the RPM so the boat can only "limp" back home. Sensor is in the motor mounted oil tank, get a new tank and that issue...

Amazon.com: New Mercury Mercruiser Quicksilver Oem Part # 859318B 1 Terminator: Sports & Outdoors

Do You have the Post? I got one on amazon so we had cup holders in it but just had to change the post from my original.

Looks Like a Hell of a Project but I am sure you will have that thing beautiful when done based on how hard you must have worked on cleaning It!

Become a premium member to this site and you can download the service manual for the Optimax 250 There is a fuel Filter on the Vapor Separator as well as several inline oil filters. The manual also outlines the process to winterize

Have you changed plugs and checked compression? Pressures are correct

The motor is a great motor if given proper maintenance. Go thru the entire fuel system, empty the fuel tank and put in fresh fuel, change out the plugs if you haven't. Staying running with wheel turned as the system bumps up rpms far right or left of steering to help with slow moving steering...

Now that you have it posted someone will likely be able to help you with the issue.

If the motor is strong I would repair the seats. Any Boat that sits for a few years will need some TLC. Change all the filters and plugs, change out fuel if needed.

MIne were the 80lb shock. ONe of the best things i have done to this boat

I used Nauticus Smart Tabs on our Islandia and made it ride awesome, plane quicker, stay on plan at slower speeds and handles the rough water of multiple wakes when on the river most importantly no more porpoising

Sucked up a baseball hat today. When I pulled the boat I was surprised to see the visor hanging out the grate. Lol. We were on a tidal river so figured it was seaweed. The rest is wrapped up good so probably pulling the grate.

Join as a Premium member and they will be available. Once a premium Member their will be another section of the forum that will be available on the List of forums.

When it gets a low oil signal it puts engine in limp mode. Should be 2 wires coming off oil cap or tank depending on model. Could be as simple as it is actually low or failed sensor. Biggest problem on the merc sport jets is that continuous beep could be fuel related or oil related. Both put...

The gen 1 240efi. Mercury changed it on the gen 2 240 efi. I know the 250 optimax didn't have that issue. Pretty sure it wasn't an issue on the 200 optimax either.

Continuous beep could also mean Oil System issue putting the engine in limp mode. Check the level on the engine mounted oil tank, if not full top it off and make sure cover is on tight. If full check continuity on Oil level sensor. Manual should tell you how to check it, I added a copy of...

As in no change of RPMs when you add more throttle? could it be a broken cable off the throttle lever?