89 110 Johnson - Too Much Oil

[rip59]

Hello to all,

Started up the motor from winter storage. Thought it was smoking too much and thought it was due to winter fogging. Ran for a while with muffs and contunued to smoke considerbly. Shut down and checked the plugs. The plugs were full of oil.

I pulled off the priming hose to the top carb and set primer to manual start and pumped out a little fuel. It was mostly oil and almost didn't smell like gas. There has been a lot written about VRO's and checking this and that. My VRO was upgraded from three wire to four wire long ago. My boat sits quite a bit between uses.

If I squeeze the primer bulb for the gas and want to check the condition of the fuel being primed into the engine, shouldn't this be straight gas? Without the pumps being actuated by crankcase pressure, I thought I would only get gas.

It sounds like I can rule out rebuilding the carbs ?????????

What would be my next steps in figuring this thing out? For once, my daughter wants to go fishing and would like to get this operational again without having to take to a mechanic.

Are DFI rebuilds worth it?

Please advise

Thanks

 

[dodgeramsst2003]

Re: 89 110 Johnson - Too Much Oil

Did the stuff you pumped out of the hose smell like varnish? Did you use fuel stabilizer at the end of last season? I'm not familiar with the flow paths for oil and gas on the VRO's, so someone else will have to chime in on that. I've heard of a lot of people removing the Oil Injection and just premixing their fuel/oil, due to problems with them.


Chris

 

[tashasdaddy]

Re: 89 110 Johnson - Too Much Oil

the gas we get today, does not have a long shelf life, like to old stuff. if you are running a built in fuel tank, i would borrow a portable tank, and try some new gas. if this solves the problem, time to get rid of old gas.

 

[ezeke]

Re: 89 110 Johnson - Too Much Oil

The VRO2 system is really two pumps, one for gas, one for oil. If the gas flow is obstructed in any way, the oil side will keep pumping oil until the motor dies.

The problem could be the tank vent, the pickup in the tank, the anti-siphon valve, the primer bulb, the fuel filter or the fuel pump.

BTW, if you have the primer bulb on backwards, you can pull oil into the gas line.

 

[rip59]

Re: 89 110 Johnson - Too Much Oil

To all,

The engine was ran from a separate tank with gas, fresh from the station. How can I tech this out in a step by step fashion?

Threre has been a lot written about NOT running/cranking the engine without gas or else heavy oil will be injected.

Lets say the VRO pump is working just fine.
What would prevent gas from getting to the pump?

 

[tashasdaddy]

Re: 89 110 Johnson - Too Much Oil

clogged filter, air leak in fuel line. vent clogged or not open on fuel tank.

 

[rip59]

Re: 89 110 Johnson - Too Much Oil

Hello to all,

I went back out and looked at everytning once again. It bothered me that in the manual prime setting, I was receiving a lot of oil mixed with gas without cranking the engine. I set up my spare tank to feed new gas. Set the pime to manual and disconnected the prime hose from the top carb. Put the hose in a clear bottle and started to pump the priming bulb. The first 4 - 5 oz was once again gas mixed with a lot of oil. I did this again and noticed it was getting lighter in color. The third time, the gas coming out was the right color. I also noticed, the air gap in the filter was now gone.

I started it up with the muffs and wha-la, after a few puffs of smoke it was idleing like a champ, with a very small trace of oil smoke coming out of the prop hub.

Could it have been this simple. Get the air out of the system.

Where did all the oil come from in the first place?
How did air get into the system in the first place?

Maybe its time to get the boat wet.

Comments welcome.

 

[tashasdaddy]

Re: 89 110 Johnson - Too Much Oil

it the tanks was full, heat, expansion, pressure, could have force it into the pump.