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    Trim Fails Going Up Randomly

    Have a 1999 75 Force 3-Cylinder. A few weeks ago trim stopped going Up randomly but works going down perfectly. When I had the issue I squeezed the relay with some plyers lightly to ensure fit and sometimes that would work. I kept hearing a relay click but would not go up. Purchased and...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    I think I found the riddle. I cleaned the seats with carb cleaner after the polish and they came out nice and shiny. Something with the Q-tip plus polish plus drill was turning the cotton black. Put new OEM needles in, cleaned and put all back together. Also got a new Sirius primer bulb and...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    I agree and wonder why the heck they made a carb with gravity needles!! I finally got the seats nice and polished and clean. The black q-tip issue appeared to be from the aluminum polish / Q-tip combo using the drill. When I used carb cleaner on the Q-tip in drill all came Clean. Tested and...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Have an update as still struggling. Found out that carb needles are sticking even after replacing with rebuild. Bought new OEM needles and started doing seat polishing process with q-tip, drill and aluminum polish (seats are permanent on these carbs). The odd thing is the q tips are coming...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Thanks for the reply! I have already cleaned the carbs twice (including dropping them into an untrasonic cleaner for an hour or so. The only thing I did not do is remove the welch plug a that seemed a little bit complicated and I read stories of them leaking after you try to reinstall. The...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Boat left me stranded this past weekend and after fishing had a really hard time starting and when did - had to rev and rev and when put into gear died out. I called a bunch of shops to take it in and no one will work on this motor any more. Got a hold of mechanic who took the time ask me my...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    I am also still getting black/grey exhaust soot on my SS prop which tells me it is still running rough.
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Yes it does spark with plugs in - checked that to. Also have a brand new cranking battery with full charge. I have all three idle mixture screws turned out 1 1/3 turns - but maybe that is too lean. I have had a hard time finding the right setting for idle mixture screws for this motor.
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    So my saga continues. I took a little break on the repair stuff. Went out a couple of weeks ago and could not start the motor right out of the dock. Went off to the side and let it sit (seamed like it was flooded but could not tell). Cranked and cranked about sitting for 15min and then got...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    I have some better news after messing with things a bit more. I ordered the Berryman carb dip carb cleaner and soaked the carbs for a couple of hours and made sure cleaned and sprayed all jets and holes. Re-installed, set fuel mixture screws 1 1/4 and got back out on the lake. Motor did not...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Follow up question on the welch plug. If i remove and clean do i have to take the bowl off again or just remove the welch plug, clean amd reinstall? Took the boat this week and it ran good for the first time. Started okay, idle was fine, top end was fine. Only remaining issue is the rough...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    This particular motor is really a Merc behind the scenes even thought it has some Force tags.
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Shoot I did not. I have the plug but was not sure how to remove. That was a miss on my part. How does that plug remove and install?
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Was able to work on boat today and had some success. Took carbs off again and fix fixed the gaskets which stopped the bottom carb leak. I noticed that on two of the carbs the float needle was stuck. Reset all of them gently. Also took or the jets, spayed with carb cleaner and put them back...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Not sure about the spark gap jump as I have the marine plugs without the electrode j-hook. I might have to buy one of those testers. Battery load I will test and see what it says. Flywheel key checked - not sure what that is but will check. Water Impeller - yes (did it a year ago). Water in...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Starting procedure is prime bulb, put throttle and 1/2 way, press choke a couple of times, turn key and hold choke at same time if needed. I read I am supposed to turn key and then hold chock in for 8 to 10 seconds and then try and start using the same procedure. Am going to try that.
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Thanks for the replies and assistance. Answers and clarifications: - I originally rebuilt the fuel pump but decided to buy a new one (which I installed but did not help) - I did not use a paper clip on the jets (that was my wording mistake) but rather on the nozzle tube. I saw a you tube video...
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Today changed all three spark plugs and still very hard to start in driveway. This is a real head scratcher. Any ideas of what to check next.
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Sorry. All three cylinders are sitting at 120 foot lbs give or take a pound or two.
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