I know this is an old topic but....

[ritamigo]

I took my Johnson 70 in for service and they said that compression was 145 in each cylinder (I am sure there was some variation). He said the motor was good. The tech guy said why don't you remove the VRO? He said taht it will fail since it's an old boat.

The horn is working, so he said to stop the engine immediately (when it sounds) and use electric to get to shore so as to not damage the engine. He said it would run better without the VRO2. MY question is how can i make sure I am always mixing the oil/gas correctly? To start, I guess I have to empty the tank. I know the mix is 50 to 1 oil.

How do you guys go about it? I am scared to get it wrong. Any input greatly appreciated as always you guys have helped me a lot.

JoeVee

 

[Mikeyboy]

Re: I know this is an old topic but....

You can buy a mixing bottle that has the ratios on the side. So you put in say 6 gal of gas than fill the bottle to the right mark on the side for your mix and 6 gal and dump it in. Presto your good. They sell them just about anywhere you buy boat parts and they are only a few bucks. Plus a good rule of thumb is your not going to hurt your motor by running to much oil but you will by running to little. When in doubt mix a lil extra oil.

 

[glenn property of pam]

Re: I know this is an old topic but....

+1 with mike i use the mixing bottle then add stabilizer but i always put the oil in first or when nearly finnished as my fuel line to tank has a dip so the gas washs the oil from the dip into the tank. grab a funnel as well makes life so much easier

 

[glenn property of pam]

Re: I know this is an old topic but....

just re-read the original post. you want to know how much gas you already have in the tank. yep thats a tricky one. if you know what the tank should hold full then add 40:1 and fill it up.

 

[boobie]

Re: I know this is an old topic but....

You don't have to remove the vro, just disconnect the oiling side of it and unplug the proper wires. The vro itself makes a good fuel pump for the 50:1 mix.

 

[ritamigo]

Re: I know this is an old topic but....

Thanks all.... I guess I should remove the VRO (sounds like?).

JoeVee

 

[AEROCOOK]

Re: I know this is an old topic but....

Thanks all.... I guess I should remove the VRO (sounds like?).

JoeVee

I would. I disabled my VRO for piece of mind, mixing is easy once you know your measurments. buy a 500ml (1/2 quart) bottle of outboard oil and mix with 23 litres (6 US gallons) of fuel. Keep that empty 500ml bottle and it's as simple as a full tank of fuel to a full bottle of oil. If you have a built in fuel tank it's a little less convienient.

 

[weekendfisher]

Re: I know this is an old topic but....

If you can disconnect it properly then do it you can't go wrong when you know the oil is getting to the motor...
You will need to remove the VRO pump though and replace it with a single fuel pump from a non VRO model, If you leave the VRO pump attached and disconnect the oil line the seals will dry out and cause dramas in the future this is quoting my boat mechanic.
The VRO is a great in theory but if that pump fails and you are at WOT then things will turn really badly very fast.

 

[ritamigo]

Re: I know this is an old topic but....

Thanks... I'll talk to my mechanic about it tomorrow.

JV