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  1. H

    Fuel System Questions...

    Background: 2004 90 hp Mercury ELPTO. Recently rebuilt carbs and had a tank cleaning. Also put new plugs in. After rebuilding the carbs the motor had a pretty bad sneeze. I got that worked out with some PITA needle adjustments. On the hose it idles around 950 RPM and any adjustment to the idle...
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    Difficult Start After Running...

    2004 90 hp Mercury does not like to start after it has been ran and then sits for awhile. If I make a run, stop to fish for awhile, she will not start right away. I always have to reprime also. Last time almost killed the battery. What could be the reason? Carbs have been cleaned, new bulb and...
  3. H

    Trim Assy Relay Question...

    Mercury manual list 2 part numbers for the trim relay I'm trying to replace, 828151A1 and 882751A1. Are these the same, and interchangeable? TIA
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    Motor Only Runs On Hose...

    My boat sits, with the occasional start, for about 4 months every year. - Start and ran on hose for half hour or so everyday this week. - Fired right up at launch and idled @2500 for about a 1/4 mile - Slowly began to lose RPM until nothing - Would turn over and run for a second before dying...
  5. H

    Lower Unit Stuck, No Movement At All...

    I mean I'm getting no separation at all. Advice? I've tried to hammer it and started it with bolts slightly attached to catch it. There isn't even room for wedges.
  6. H

    Idle Question...

    At the beginning of a trip I can fire the motor and will idle fine, well as good as this motor idles anyway. After I make a run and fish for awhile the motor will not idle unless the throttle is open quite a bit, which is really loud. It has done this the whole time I have owned the boat. Any...
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    Fuel and Lower Unit Oil ?

    On a scale from 1 to screwed , where do you rate this fuel? I read to look for lower unit oil being "milky", does this qualify as milky? Kinda' tough to see though the clouds but you can make out the slightly opaque substance in the oil... Do I need to drain the gas from the tank to change the...
  8. H

    Fuel Water Seperator ?

    My filter is stuck so I'm going to take off the housing. Am I disassembling the hoses from the screw in pieces on the housing or do I need to unscrew those fittings? I can't seem to pull the hose off after removing the clamps. Very nervous messin' around with gas stuff...
  9. H

    What Is This? Reason For Concern?

    I just noticed this while doing 100 hr. maintenance. I have no idea what it is and never noticed it (pics 2-3). Also , is it normal for the trim motor housing to rust this way?
  10. H

    Motor Just Quit ar WOT... Help

    Here is the problem. But I don't know what caused it or how to go about fixing it so it doesn't happen again. Also, you can see in the second picture, it looks like the two pieces with white lines (looks like bent broken plastic) should be connected somehow. The smaller piece in on the left of...
  11. H

    Motor Just Quit ar WOT... Help

    Running at 5500 rpm and everything was smooth, then it just died to idle speed. Cut out and fired back up twice before cutting out and not firing again. Thought I may be out of gas because my gauge went from half to pinned on E. Limped into a marina on the trolling motor got some gas and it...
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    Factory Manuals...

    Where can I get one of these for a 2004 90hp Saltwater?
  13. H

    2004 Mercury 90hp Questions...

    Its a saltwater series ELPTO, serial # OT872802 1. What are the wires coming from the upper voltage regulator connected to? Theres 2 red, 2 yellow, 1 grey and the black ground. Couple of the bulletts are fried and they all are melted together. 2. There is 3 brown wires at the bottom, 1 of...
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