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    Johnson 120 VRO - Fuel, Spark, Compression....NO POWER!

    I Have a 1990 Johnson 120 VRO that has always started and ran fine. VRO removed and running mix for years. New clean fuel both main and aux tanks. No air leaks. 100+ PSI compression and good spark all 4 cylinders. This season I cannot get up to WOT. Fired it up on muffs at idle and started...
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    Johnson 120 V4 - Which Carb for Which Cylinder

    1990 120 Johnson. Wont throttle up. Good compression and spark all 4 cylinders. About to do a carb rebuild. One side at a time. But I?m confused. Cylinders 1 & 3 good spark but no change when I pull wires. (Cylinders Engine Rear) 4 3 V4 2...
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    1990 Johnson 120 VRO - Cannot get up to full power

    Only several weeks left to the season in MA.....................1990 Johnson 120. Cannot get up to full throttle. VRO disconnected. Spark all around. 120-130 lbs compression all 4 cylinders. Same as always. Starts, idles, and runs low speed no problem. Cannot get up to full throttle. Feels...
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    120 VRO Fuel Pump Help

    Last season my 1990 Johnson 120 VRO was experiencing fuel stavation problems. Died at mid to high throttle. I've attacked all the usual suspects (new lnes, filters, water spearator, anto-siphon, fresh fuel, etc, etc). This didn't help. So last ditch effort I've just rebuilt the fuel pump. Note...
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    120 VRO Fuel Pump Diagram/View

    Hello, Does anyone have an exploded view of a 120 VRO combo oil/fuel pump? I'm interested in just the fuel pump diaphrams, springs & things. I may have shot something across tha basement while dismantling the pump. Something doesn't seem right. Thanks
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    Removing Trim Motor on Johnson 120

    The trim motor on my 1990 120VRO is badly rusted as are most that I've seen. Decided to change before problems begin. There are three screws. One which is againt the transom and un-accessable. Is there a trick to changing this motor? It looks like the whole assembly will pivot forward if I...
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    1990 Johnson 120 intermittent water/cooling

    Hello all you experts out there!<br /><br />Last weekend my 1990 Johnson 120's overheating alarm sounded and the tell tail was only trickling so I immediatally shut the engine down. After a long cooling down period I restarted and it was pumping so-so but not to my satifaction. But, I made it...
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    Un-burned Fuel in Exhaust

    I have a 1990 Johnson 120 VRO (vro removed) that seems to be running ok but there is a lot of fuel emmiting from the water/exhaust. I'm sure that all 4 cylinders are firing since the engine will change rpms as I remove the plug wires one-at-a-time. Also, even though the engine was not running at...
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    197? Merc Lower Unit Removal

    Hi, <br /><br />I have a early 70's 65HP 4 cylinder that needs water pump replacement. I can only get the lower unit to split about 1/2 inch. Looks as though it is being held- :rolleyes: up somewhere near where the shift shaft couples to the lower unit. There is a small (stripped) brass access...
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