Excessive Oil Consumption Johnson 50

[roboman]

Thanks in advance for any suggestions.<br />I recently purchased a 50 hp Johnson that had been used very little over the last few years. <br />Intially the engine was sputtering at around 3000 rpms so I rebuilt the carbs (carb kit) and replaced the fuel lines coming from the fuel manifold to each carb. The lines were internally gummed up.I cleaned every orfice in carb checked the floats and reassembled. Engine does not miss now at high rpms but I am using to much oil. <br />I filled up with 12 gallons of gas and ran about 35 miles and used 1 gallon of TCW3. I have replaced the plugs the bulb for gas. I have not replaced the fuel filter. In order reach good idle speed and throttle response the air mixture screw has to be backed out around 4 turns. Should I remove the VRO or am I just covering up another problem.

 

[voodoo]

Re: Excessive Oil Consumption Johnson 50

you answered you own question no motor will run well at 12 to 1 ....replace the pump with a gas only and mix your fuel...there are instructions on this site

 

[Mark42]

Re: Excessive Oil Consumption Johnson 50

This may be obvious, but I made this mistake once: If the vent on the tank is not open, the VRO will suck more oil than gas and it starts smoking. It also started to have 200rpm swings at steady throttle. Thats when I stopped and found the problem was operator error, and opened the vent .

 

[roboman]

Re: Excessive Oil Consumption Johnson 50

Thanks for the suggestions. Mark42and voodoo checked the vent even changed to another tank during the carb rebuild. Mixing the oil with the gas is not a problem but I don't want to remove the VRO if it could possible be something else. The motor probably had less than 20 hours when I purchased. <br />Therefore I would think it should not fail. Sorry for the long response time. My wife forced me to take a vacation.