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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    I do suspect an adjustment might solve it. But if I adjust the roller where the 2 marks don't fall in the middle that won't cause issues right?
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    Force 120hp won't start

    I guess the reeds being stickymight be an issue. Are they plastic or stainless?
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    1990 Trophy twin Force 120s prop question

    The props are aluminum, as I said the boat weighs 3500 plus additional weight added to it. The boat is a 1990 Trophy cuddy. The engines are 120hp each. You had or worked on those right? The guy before me had the 13x19 but since the RPM was only getting to 4400 I thought of changing them to...
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    1990 Trophy twin Force 120s prop question

    I took off the 19s 4 blades. Do the 3 blades give more RPM? Lets say 3 blade 19th? My friend has a Trophy 19feet with one Mercury 125 has a 13x19 on it. I forgot the max RPM at WOT
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    85hp 3 cylinder Force carburetor throttle plates.

    Isn't there a bar that attaches all 3 carbs. On dual carbs it's pretty simple you undo the screw on the tie-bar from the starboard side of the carbs and they fall flat. At wot you adjust the throttle link and the plates move together. In between you adjust the roller. For 3 I don't know for...
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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    I nolonger get notifications for responses on my posts. Is everyone in the same boat?
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    Force 120hp won't start

    So gas coming out when choking could be one or more reeds defective. There are 4. Mine are stainless steel. The engine is not leveled when cranking. The needle valve not stopping the fuel when bowl is full. If you have the carbs out press the float in and blow through the fuel line make sure it...
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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    Yeah sorry about that, just looking for answers. Thanks Jerry.
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    1990 Trophy twin Force 120s prop question

    1990 Triphy 2302 twin Firce 1999 Trophy 2302 twin Force 120 engines. I think the boat weighs 3500lbs, but loaded for fishing it weighs at least 500 more. The boat runs great on both moroe now 13.5x15 but when I tried only one it cased the high rev. I guess they are meant for both to be used.
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    Force 120hp won't start

    You have to turn it upside down and let it fall to where the main jet is located. Not touching but closest to it. And the other way parallel to the body. What is the problem with your motor now?
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    1990 Trophy twin Force 120s prop question

    The boat came with 4 blade13x19 props but it only maxed at 4400 RPMs at WOT, so I got some 4 blade 13.5x15s and it does max out at 5000RPM now. If I run one engine though after 3000RPM it revs up like it's slipping and the boat doesn't pick up speed, both motors do it, just revs up to max really...
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    Force 120hp won't start

    I don't think it is supposed to be. All mine actually touch the side so don't force it in the middle
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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    So I took it to the lake again yesterday and at first it was ok at idle in gear I even adjusted it at 750rpm. After driving it for awhile though it started dying in gear again. If I put it in gear quick and push it forward passed a certain point it stays but if I just click it in gear and leave...
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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    I took compression again today and I had 150psi on 2 and 145psi on other 2. Safe to say the exhaust fix help raise it up at least on the test results. I have to take it to the lake again. I really hope thatit doesn't die in gear anymore. The fuel line is mostly new. Pump new, all gakets new...
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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    Another picture of the plugs. Do it ran great for awhile and then it suddenly stopped, it would stary right up but sometimes there was a bit of backfire when cranking. I did start it a few 10 times and it seems to be ok now. I was like wtf this is new. So I raised the front of the boat more and...
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    1990 Force 120HP carbs mix adjustment help

    So I got all the parts and put the exhaust cover back with the new separstionplate, straight enough cover, and gaskets plus sealant between it all. I even bought new stainless bolts and some washers. I also changed the power head with another one that is a little straighter and no damage inside...
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    Force 120hp won't start

    Like I said I had gas coming out and the bulb was getting hard also. But if the needle seat is dirty or gummed up it spits the gas through the neck. Look to see what type of seats you have whether they have rubber in them or the needle has a rubber tip. The gas is supposed to go one way. If...
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    Force 120hp won't start

    This is probably your problem. Gas is supposed to go one way only, sacked in the cylinders. You have to figure out why. Also a gummed up carb at the needle, bad needle and seat that is not closing 100%, timing going out for different reasons like bad key at the flywheel, coils firing badly it...
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    Force 120hp won't start

    I had gas come out of one set of carbs in the beginning. The float is either broken or out of adjustment but usually you see gas come out of different holes when you prime it. If it comes out when you have the engine on it could be the reeds but also the floats. My reeds are stainless so never...
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    Force 120hp won't start

    I think what I read was when breaking in new piston rings to lower the timing temporarely.
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