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1978 Predictor, Merc 150-not started in YEARS

ontopcop

ontopcop

Member
Been awhile since I've been here, even longer since I've started my boat, ( Texas drought, restored Mustang, we had a baby...) so anyway,.
I'm ready to get back on the boat project, interior ready to finish up, but I need to start the motor,
It's been atleast 4 years since the boat has been started,
WHERE DO I START, ( no pun intended ).
Should I go thru and replace plugs, oil, etc...
 
So the cards should be good then. That was my main concern with this garbage they call fuel nowadays. If there is any fuel in the tank I would pump it out and get some fresh premix in there. Maybe a dab of oil in the cylinders and turn it over by hand with the plugs out just to makes sure everything is free and lubed. Perhaps some Sea Foam in the fresh fuel as well.
 
No problem. I hope it goes well for you. I had my old boat laid up for a few years when kids and stuff came along.
 
The old Mercs are pretty forgiving.I would agree you should squirt some oil in the cylinders and roll it over by hand a few times.
I just started a 1965 Merc 65 hp on the stand that has been sitting in my shed for 10 or 11 years.All I did was hook up the controls, fuel tank,muffs and let her rip.Started and ran like I ran it last weekend.I did fog the engine with storage oil before it was put away so I know everything had a coating of oil.Never even pulled a plug or touched a carb.Amazing how well built these older Mercs are built and how forgiving they are.
 
I would say the impeller (water pump) would be mandatory. Why take the chance of cooking a perfectly good motor or having a small thing like that ruin your first day out on the water?
 
But you don't necessarily need the whole pump. I just replaced the rubber impeller not the whole pump. Overtons had it in stock. Unless you've got a bigger problem it's usually just the rubber impeller that stiffens up. Even if you boy the pump kit that most places have it's usually just the top housing cover (not the bottom half) and it's now plastic instead of the original metal.
 
I really appreciate all the advice. Thats what I love about the checkmate forum, compared to the other vehicle specific type forums I'm on, Checkmates is hands down the best. Its about helping and sharing, not one-up'n and attitude. Tho, the Checkmate boat has the best attitude!
 
Just make sure you let us know how it turns out! Having been in the delivery room we now wanna know how the baby is doing.
 
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