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1980 115hp V4 VRO

S

spearedfishes

New member
Hello Everyone, I am new to the Forum but have read some good stuff. I have a 1980 115hp V4 VRO 2 stroke with 500 hours. The VRO has been by passed so I mix the 50:1. I bought the boat and motor from 3rd owner. Boat sat for 3 years, and she stared up but died after 30 sec, no excessive smoke sounded good. Compression test after using some marvel in upper cylinders for a day is 115 to 120 on all 4. I tried to get engine to run with the sea foam spray trick in carbs(used this trick on many Motorcycles). Boat would run for about 3-5 min and then die. Tried it 4 or 5 times the decided to rebuild the carbs. Fuel bulb would hold pressure before carb rebuild. I rebuilt carbs with a Johnson carb kit (replaced every thing I could with kit), replaced fuel filter(old fuel filter was gunked up), new plugs and now the engine has a lot of white smoke especially out of prop area. Engine idles funny but when you turn up RMP over 2k she sounds good. She drinks a lot of gas (drinks about 3 gallons a little above idle a hour) and the fuel bulb wont stay hard, if I keep pressing fuel comes out of carb, but she will run until the tank is empty. I do have to start with high idle to get her going. She pees well. I'm using a small 3 gallon tank to trouble shoot and bulb holds pressure until connected to motor. Cant find fuel leaks on outboard and lines look good. Any help would be much appreciated.
 
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Well---1980 models did not have VRO.------Model # is ?----Pictures ?---Fuel should not leak out of the carburetor.-----It needs a new impeller if you do not know how old it is.-----Are all throttle plates CLOSED at idle ?
 
racerone said:
Well---1980 models did not have VRO.------Model # is ?----Pictures ?---Fuel should not leak out of the carburetor.-----It needs a new impeller if you do not know how old it is.-----Are all throttle plates CLOSED at idle ?
Click to expand...


Impeller has been changed, lower fluid done, ordered power trim fluid to be safe, lubed steering with grease gun, Model is J115TLASB, sorry its a 1990. I tried to update thread but it did not allow me, good catch. The throttle plates are closed at idle. Today I will pull carb off and put original float needles and floats back on.
 
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While you have the carbs off, make sure the jets way in the bottom of the carbs are completely clear. Run a single strand wire through them. Also, if your carb bowls are plastic, check to see if they have warped by sanding them on a piece of glass. They warp and allow air in even though they don't look like they are leaking fuel.
 
Update, I pulled carb off and for some reason it was dirty again. Fuel was new so I got a little discouraged.Took a deep breath and tore carb apart again. As riopga suggested I checked jets at bottom and one of the 2 on each carb were clogged. Carb bowls are plastic the seemed straight. I also replaced all fuel lines. Engine seems to run as it should. I will take it for a water trial soon. I have a 6hp kicker to get me home if anything happens. But she idles correctly. Thank you all for help
 
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