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    Opti 150 coil

    Anyone know a way to test the coils and drivers for a 05 150 optimax?
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    Opti 150 stumble

    I have an opti 150 05. It starts and runs but stumbles I hav changed plugs, air press good, fuel press fluctuates as motor stumbles, have changed low press fuel pump, mech fuel pump is good, cleaned the vst, checked connections for coils, using plug light checked spark, and gas is new...
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    Alternate part question

    I have a 06 opti 150 with a bad low pressure fuel pump. My question is i have seen other pumps that look identical with the same psi output for $120 for a carb model from 90's while actual replacement pump is $400 Has anyone tried this as alternate? Anyone found a good part site to order from...
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    Merc fuel problem

    I have an 06 150 optimax that doesnt want to go above 1500 rpm and wants to die wen put n gear if not quick on the throttle. It runs rough and stumbles above 1500 and drops back down. Iv checked spark plugs ignition air press n fuel pressure. My fuel reg valve is clean and pulse pump good. That...
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    06 opti suspected fuel problem

    I have a 2006 merc optimax 150. until now have had no problems with it. I took the boat out this weekend and the motor ran fairly rough. it had a bit of a problem starting but does start and idles ok for a while but will eventually die at idle. when the motor put into gear it wants to die unless...
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    navionics help

    I live in south fl(palm beach) and am planning a trip to the keys. I am told its a good idea to bite the bullet and get a nav download for my gps/fishfinder. Now the search is on. I have never bought any navionics. My question is does anyone know of a good sight or place to buy navionics?do any...
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    2005 opti 150 alarm

    My 2005 150 opti has been giving me few probs. When i run the boat the alarm comes on about every 10min or so and gives a few short beeps the goes off. Also the boat used to run about 5500rpm and 37mph, now it wont go past 4000rpm and 25mph. I changed the fuel filter recently and had no problems...
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    low rpm

    I have 2005 merc opti 150. My problem is it used to run about 5500 rpm and bout 35-40 at wot. Now it sits around 4000 rpm and 25 at wot. I have changed fuel/water separator, cleaned plugs, and only use 90 not ethanol rec fuel with occasional sea foam. My alarm comes on and beeps for a few...
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    merc manual

    Anyone know where i can get a good deal on a service/maint manual for a 2005 150 merc opti? Also i have a prob with it....my eng runs great below 4k but when above 4k goes up then few seconds later starts to stumble..any suggestions?
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    merc 150 problem over 4k rpm

    I have a 2005 opti 150. this motor has ran awesome up to this point, but now it runs good until i get over around 4k rpm. when i push it past 4k-ish it spools up and after about 4-5 seconds it starts to stumble. it runs great all day below 4k. I use only 90 rec no ethanol gas. I have checked the...
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    merc stumbling

    I have a 2005 opti 150. this motor has ran awesome up to this point, but now it runs good until i get over around 4k rpm. when i push it past 4k-ish it spools up and after about 4-5 seconds it starts to stumble. it runs great all day below 4k. I use only 90 rec no ethanol gas. I have checked the...
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    humminbird 787c2 fish finder

    Guys looking for some advice. I bought a boat about 3 wks ago and it came with a humminbird 787c2 fish finder/gps. yesterday the gps went out, it would not fix on my location and I believe it is an internal problem. So the question is do any of you have good results by sending it in to...
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    buying a 150 optimax, questions

    Hey guys im getting ready to buy a new boat. 2005 21 cc seafox with a 05 mercury optimax 150 w/300hrs. My question is what things should I look for? Im gonna check compression, lower unit oil, and condition, what else? also does anyone know what the optimal compression for that motor is? anyone...
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    ok for ocean use?

    I need some help in deciding what kind of boat to get for my needs. Iam fairly new to the ocean boating world and live in west palm beach fl., am wanting to buy a boat that I can take on the ocean, no more than 5miles out (being cautious of weather). I plan to use it for two things fishing and...
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    2 or 4 stroke, yama/uki/rude/son/da type question?

    Ok guys I have posted similar questions before and got some responses. I'm really not looking for the generic answer/everyone has a different opinion type non answering answer. I am about to buy a boat(again) for mostly off shore diving and fishing for the west palm beach, fl area no more than 5...
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    is a deck boat accepatable for off shore use?

    I am considering buying a boat for offshore use. Mostly diving, fishing and partying. I read a post that the deck boat is as similar to a pontoon boat as you can get(i like pontoons for the space and comfort). I was also told that a pontoon boat is suicide on the ocean and was wondering is a...
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    Boat type recommendation?

    Well guys I am in the process of looking for a new boat and need advice on what to get. I am looking for a boat that I can use in the ocean(not more than 5 miles out) or in-shore. I will be using it for diving, fishing and overall just cruising/partying. I am not wanting to spend more than 11k...
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    salt water series

    So i have two questions, does the saltwater series motors make that big of a difference when used in saltwater? are they just built heavier? Fuel injection, what year/years did they start putting them on outboards?
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    2 stroke vs 4 stroke(2 motor scenarios)

    I know 4 strokes have a better reputation for longevity and reliability but how big of a difference does it make? for instance i am looking at two boats one with yamaha 115 4 stroke 2003 or a merc. 90 2 stroke 2005. how big is the life of the motor difference(keeping in mind i would do all the...
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    output ?

    i dont know what they are called but the drives on speed/ski boats that is kind of L shaped but comes right out of the transom for an inboard boat, pretty common. What is this set up called? and are they good, bad, or ugly? considering boat with one as the drive sys.
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