New Mercury EFI 150 Question??

[JP1012]

Folks, I have a Showroom Display Nitro 189 boat with 150 EFI, it has sat for over 1 year, What should I do before running the engine??? Need to run it 10 hours Break-in before winterizing.

Joe

 

[CharlieB]

Re: New Mercury EFI 150 Question??

Drain, clean fuel tank, flush lines, drain vapor separator.

Pull plugs, ground wires, squirt a small shot of 2 stroke oil in each plug hole, bar the motor over a few turns just to make sure everything turns freely.

Reinstall the plugs, fresh fuel, start it up bring idle up to @ 1800 and let it warm completely.

Careful, pay attention to P stream, it should start once the engine gets to temp, if the least bit suspect, change the impeller.

 

[JP1012]

Re: New Mercury EFI 150 Question??

LC, Thanks for the info.... I haven't had the chance to even see the boat, I believe their has never been fuel or oil in the tank. Removing the plugs, and squirting oil sounds like a good start for an engine that has sat for so long. Can i use the electric starter to motor the engine with the plugs out? I am going to get one of those water clamp things for my hose. How long can I run a engine that size with only a water clamp? I guess I will have to charge the batteries too. About the vapor separator, where would I find that??
Cheers

Joe

 

[CharlieB]

Re: New Mercury EFI 150 Question??

I didn't realize that it is a brand new unit, never put into service.

Forget the vapor separator, fully charged battery, PRE-MIX fuel at about 100:1 ratio for the first tank, when added to the what the auto oiler mixes, this will give roughly half again more oil then normal for additional lube during break-in.

Stay with a major NAME BRAND TCW-3 outboard oil, as in Merc, Yamaha, Johnson, etc. I do NOT recommend generics, they may pass certification tests, but I often wonder by what margin.

 

[JP1012]

Re: New Mercury EFI 150 Question??

Guys,
The Boat & Motor were Brand NEW 2008 Never in the water, but has sat 1 year on Display. I will add the extra oil (100:1) to the fuel tank like you say good for the factory break in. Thinking of doing 2 to 3 days 3 to 5 hours running each then winterizing.

Thanks

 

[shawnc]

Re: New Mercury EFI 150 Question??

You don't need to add oil to the gas if you have the same motor I have. I have on 08 Tracker with a merc 150 EFI and it is oil injected and the computer takes care of the breakin period for the different oil/gas mixture. Mine has a 3 gallon oil tank, plus a small tank on the side of the engine that holds maybe a half quart. When I got my boat, that tank was already filled...don't know if Merc does it or if it's up to the dealer to prep it when they take delivery.

The oil comes from the remote mounted tank to the smaller, engine mounted tank, then to the engine. That small tank has to be full before you run it, or you'll get an alarm. And if you ever run the main oil tank dry, you have that small reserve tank, but it must be filled separately if the main tank goes dry. There should be break-in instructions in the manual. My dealer told me to warm up the engine at a low RMP, then start stepping up and letting it there for a few minutes, then up or down and continue until break-in period is over, avoiding WOT. And no WOT starts for that 10 hour break-in period. My dealer told me to avoid the urge to punch it during this break-in period, because the computer keeps track of the rpms from the breakin period for warranty purposes.

Make sure there is oil in the lower unit as well.

I'd just run stabil in it during you're break in, that way you'll have that step taken care of for your winterization.

 

[CharlieB]

Re: New Mercury EFI 150 Question??

A llittle extra oil in the fuel will only tend to shorten the spark plug life, but it IS a very good point that the newer EFI's do keep record of RPM/time so the dealer has evidence to opt out of warranty repairs.

Just proves again, When all else fails, read the directions.

Personnally I'd have to look at the oiling, the older EFI's used the same oil pump and mixing and the computer did NOTHING to the oil ratio, hense the same old advise, add a little to the fuel tank, cheap insurance in case of any factory part failure.

Any current tech's would be welcome to chime in here and clarify this for us?