Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
David Frank

2000 90 HP Mercury Outboard Question

9 posts in this topic

I have a 2000 90 HP 2 stroke Mercury that has been very cold blooded the first time I start it on any given day ever since I bought it. I always squeeze the fuel bulb until firm and it holds pressure, so I know that isn't the problem. I often have to give it quite a bit of throttle in neutral in order to get it to fire, and then let it idle for a while before engaging the motor until it warms up or I kill it when I put it in gear. The previous owner and myslef have run nothing but premium gas through this motor. After the first start of the day, it always starts like a dream (barely have to touch the key and it fires right up). Aside from this one issue, I have not had any other problems with this motor and have been very satisfied.

Any ideas or suggestions would be greatly appreciated. Thanks in advance.

Share this post


Link to post
Share on other sites

I have a 1999 115 Merc and I always thought the same thing about mine.

Here is what I found worked best for me. After I get the bulb firmed up and the engine fired I keep choking it just a little bit when I hear it start to sputter. This keeps it running and after about 30-45 seconds the engine is warmed up and runs nice.

Share this post


Link to post
Share on other sites

I had a 2001 90 HP and mine was always the same way, with the exception of the starts like a dream after part.

I use to do the "hit the choke when it sputters" deal too.

Share this post


Link to post
Share on other sites

These motor are notoriously cold blooded. There's not much getting around that unfortunately. As the others have recommended, when it sounds like it's about ready to die, give the motor a quick choke (push the key in and release) and it should pick up for a little bit.

marine_man

Share this post


Link to post
Share on other sites

I see that alot at the resort. The older merc 3 and 4 cyl seem to be hard starting in the morning. just the nature of the beast with the old carbed 2 stroke Mercs/Mariners/Force.

Share this post


Link to post
Share on other sites

I see that alot at the resort. The older merc 3 and 4 cyl seem to be hard starting in the morning. just the nature of the beast with the old carbed 2 stroke Mercs/Mariners/Force.

I've got a '93 60 HP, 3 cylinder that fires up like a dream.

Share this post


Link to post
Share on other sites

They can be hard starters. My Dads 80 was, for the most part a bit touchy, but with some tweaking of the idle mixture, I'm able to get it to start cold pretty good.

Share this post


Link to post
Share on other sites

Just a thought take it in and have it timed with a dial indicator. Might be just a couple of degrees off.

Share this post


Link to post
Share on other sites

David....

Do a search on 90hp Merc on the forum. I had the same issues as you descibe....for the most part. Also read the entire Amsoil? post. Maybe something there will help. Good luck.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    • Well, it does look like the "Freedom Caucus" and the rest of the party could not agree on a replacement.     Is the Freedom Caucus the not quite full on Libertarian wing?  Or are they something else altogether?  
    • See the fun of the three party system?    
    • Look again  HSO Baby
    • 39 HERE IN THE boat on Hidden Bay, yesterday we had sleet and snow and the furnace was running when I got home, things I do not want to see hear towards the end of March. Was in the big city yesterday at the clinic, Thursdays are chemo days so I was hooked up to an IV for most of the day. However I did spend most of my day chatting up the guy who was sitting next to me. Interesting fellow he was before retiring the CEO of a hospital and spent a lot of his down time on a northern lake that is on my bucket list to fish. What better way to learn a lake then by someone who has fished it for the past forty years. I am hoping to share a chair alongside of him next Thursday. When I was getting blood drawn I sat next to yet another interesting guy. He to was retired but I was to find out that he worked at Cape Canaveral for thirty years where he was a jig and fitting’s guy. His job was to take an idea and make it real for the rockets they launched there. Another guy was sitting behind us ease dropping and he pitched in that he new a guy who lived in a small town up the shore who was also retired and his job was to fly a helicopter and pull the astronauts out of the ocean when they landed. Funny where local guys land up and what jobs they acquire. I gave all three of them Lodge business cards, would be interesting future Lodge members.   So the good and bad part of doing chemo is last week was a great week, Since I was last in the hospital I took on a huge amount of water weight. Last week I lost twenty-one pounds I was a very happy camper when I got off the scale, Hope to repeat it again this week, now the bad part is I am back on steroids and I have to take them for three days running after every treatment, the side effect is insomnia. Last night I only slept two hours and then I was wide awake, So at five this morning I made big batch of chili and took my time dicing everything by hand. Should be done here soon and I already called Elmer and Chuck to come over for late lunch.   Even though it is cloudy out you can tell the sun is up longer and higher in the sky, my seedlings in the South window are finally starting to grow and even the tobacco is becoming bigger then dots. Only a month before stuff should go out to the greenhouse and two months before we start planting in what was looking to be an early spring, now I am not so sure. I did roll a few cigars an I am getting better at it, I am surprise at how much tobacco leaf I am using up on a single cigar. I may have to plant more then I was planing this summer.   It was nice to go to the big city though, I have been locked away in the cabin most of the winter and the fresh air is good for me. The wife is none too happy as I am building a pretty good Honey Do List of my own! for her her at Lake Iwanttobethere
    • Yea....but..... that stuff is complicated.....who knew?
    • I'm sure the resident silly town neocons will respond with a meme blaming libertarians
    • So the GOP controls the house, the senate and the Whitehouse and they can't do anything with it, probably a good thing. 
    • All this winning......   Hillary in jail Wall Street reigned in Swamp drained Obamacare repealed Budget balanced Border wall built.   And it's only Friday.   Take the rest of the week off.
    •   Will that be like Wal-Mart with ENTER and EXIT gates?
    •   Their fun to run around a campground on. One of them that I got was someone in our campground who had it and just could not get it to run right and kept fouling plugs out and it ran bad with a lot of smoke. He had it sitting under a tarp for a year as he had given up on it. I asked him what he mixed his oil at? He said 50-1. I said I'll take it and got it for $200. I brought it over to my camper and drained all the gas out and mixed it 80-1 as I know that the book on them said to run them at 100-1. So, new mixed gas and a new spark plug and a hour later I'm running all over the campground with it! He was shocked to see it running so well. Lol
  • Our Sponsors