David Frank Posted June 12, 2009 Share Posted June 12, 2009 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. Quote Link to comment Share on other sites More sharing options...
archerystud Posted June 12, 2009 Share Posted June 12, 2009 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. Quote Link to comment Share on other sites More sharing options...
MuskieJunkie Posted June 12, 2009 Share Posted June 12, 2009 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. Quote Link to comment Share on other sites More sharing options...
marine_man Posted June 12, 2009 Share Posted June 12, 2009 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 Quote Link to comment Share on other sites More sharing options...
overdalimit Posted June 12, 2009 Share Posted June 12, 2009 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. Quote Link to comment Share on other sites More sharing options...
Ralph Wiggum Posted June 12, 2009 Share Posted June 12, 2009 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. Quote Link to comment Share on other sites More sharing options...
boatfixer Posted June 13, 2009 Share Posted June 13, 2009 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. Quote Link to comment Share on other sites More sharing options...
overdalimit Posted June 15, 2009 Share Posted June 15, 2009 Just a thought take it in and have it timed with a dial indicator. Might be just a couple of degrees off. Quote Link to comment Share on other sites More sharing options...
berfish Posted June 17, 2009 Share Posted June 17, 2009 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. Quote Link to comment Share on other sites More sharing options...
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