2000 50HP 2-stroke fuel injected

[Queencitybassman]

I picked this motor up on a great deal but it has not been started in 6 years and has a total of 20 hours on it. It is a 2000 50hp 2-stroke fuel injected mercury with all controls and cables. My question being since it hasnt been started in six years how should i go about prepping it for the water. What kind of basic services need to be done to it. Id like this motor to last a long time but dont have too much money to go to a mechanic to get too much done most ill try to do myself. Advice and suggestions wanted guys thanks.

 

[Quackrstackr]

Fuel injected or oil injected?

I don't think that Mercury made a 50hp 2 stroke efi motor (Optimax) in 2000.

I would change the water pump impeller and lower unit oil, add some fresh 2 cycle oil to the reservoir and some Seafoam to some fresh gas and try to fire it up.

 

[crazymanme2]

I agree with above post plus I'd put some 2 cycle oil in the spark plug holes.I'm sure after 6 years most of the oil is not on the cylinders.Be careful with that oil injection after 6 years.Could be gummed up after sitting all that time.I believe I would use some premix just incase.Better rich on oil instead of no oil & scorched cylinders.

 

[Queencitybassman]

Sorry i meant oil injected.. how much would this stuff cost to get done at a mechanic

 

[crazymanme2]

You should be able to call a few places for quotes.

 

[Quackrstackr]

Prices are subject to area and competition. I've seen places charge anywhere from $75 to $150 for changing an impeller (which would automatically come with a l/u lube change).

 

[Loggerhead Mike]

i would personally do away w/ the oil injection unless you take it all apart and clean real good.

ive never trusted them

 

[Queencitybassman]

An what about cleaning carbs?

 

[Queencitybassman]

all that stuff seems pretty do-able but I am not sure where the resovoir is

 

[Quackrstackr]

all that stuff seems pretty do-able but I am not sure where the resovoir is

The oil reservoir? It's that white tank on the front of your motor with the cowl off. That's where you put your oil and it mixes with straight gasoline from your gas tank before entering the carbs.

 

[Queencitybassman]

oh okay.. how do you clean that.. and also is the seafoam going to be enough or should i take the carb apart and clean it also

 

[Quackrstackr]

Is it empty (reservoir)?

If it is and it is clean, I wouldn't worry about it. If it's not, I assume that it just bolts on and there is some tubing that connects it to the oil pump... at least that's how it is on my 90. Just take it off and clean it out good with some sort of oil/grease cleaner. Cleaning out the rest of it (the actual pump) is a lot more labor intensive and may be more than you want to tackle yourself. You for darn sure don't want to mess anything up in that area if you are planning on running the oil injection.

I would try Seafoam before I started tearing into the carbs. You haven't cranked it yet so you don't know if the carbs are even dirty. The Seafoam certainly won't hurt anything.

Crank it on a set of muffs and you will be able to tell quickly whether the oil injection is working or not. When a motor doesn't want to start, the injection keeps pumping oil and when it finally does fire.. there's going to be a whole lot of smoke. If you don't see any smoke, shut it down and have a mechanic look at it.

 

[Queencitybassman]

do you think i should just scratch the oil injection all together.. loggerhead is saying that he doesnt trust them. Thanks for all the advice you have been real helpful

 

[crazymanme2]

I don't trust oil injection either.Get rid of it & any problems it may cause. =D>

 

[Quackrstackr]

Getting rid of it on a lot of motors isn't as easy as it sounds. Most times they are incorporated with something else and you have to get dummy parts and blanks to replace the original parts so that everything else still works as it is supposed to. Once again, screw something in that oil pump area up and you are going to have problems. I would leave that to a marine tech. that knows what they are doing if you are planning on doing away with it.

You probably can't just not use the tank and leave it as is, either.

 

[Queencitybassman]

Would i be safe making my ratio really thick by doing 50:1 mix in the gas tank and also putting oil in the oil injection.. Also i read it would be a good idea to replace the fuel filter which is just a $5 piece.. what do you think

 

[wasilvers]

I have an old evinrude 50 hp that mixes the oil for you. Before I got it, it had been converted to premix. I looked online and there were several guides for converting to premix. I checked what was done against these guides and it had been done right.

I mix 50 to 1. It smokes a lot at idle, but then, smoke means oil.

 

[Quackrstackr]

Would i be safe making my ratio really thick by doing 50:1 mix in the gas tank and also putting oil in the oil injection.. Also i read it would be a good idea to replace the fuel filter which is just a $5 piece.. what do you think

During break in for a new motor, you do exactly that. I don't think that you would hurt anything but you will just be burning a lot of oil and potentially fouling plugs.

It probably is a good idea to change the fuel filter while you are at it.

 

[Queencitybassman]

Alright i mounted that motor on the boat today.. took three people.. started fooling with it getting ready to service it.. its not bolted down yet but it seems as though the tilt works fine but im having a trouble getting the trim to work.. it got dark so i couldnt really get a good look at it but any suggestions?

 

[Quackrstackr]

Tilt and trim are one and the same unless you just have tilt... which is possible on a 50.