Force 85 hp - using Power Tune

[ksoiss25]

Hi all,

Still a newbie boater here. I know if you really want to clean carbs, you need to take them apart. However, I'm lazy and bought a can of Power Tune to see if it will do anything. Looking for help on where to spray this. I attached a pic. Do I spray right into where I'm pointing?

Thanks,
Kevin

 

[SkiDad]

yes. if you are going to run it in the driveway make sure you muffs are on securely so you get good water flow. I wouldn't rev past 2000 in the driveway (in neutral)

this will mostly clean the engine.

 

[flyingscott]

Powertune will do nothing for the carbs and your engine needs to be at operating temp for powertune to be effective. To clean your carbs without taking them apart get a bottle of seafoam. Now pump the ball until the carbs are filled, now take the fuel connector off the tank end. Start the motor and shove the fuel line into the sea foam can and right before it dies hit the choke. Now the carbs are full of seafoam let them sit for an hr and restart the motor. This will allow you to get the inside of the carb and it will smoke a lot when you restart it. You have a 50/50 shot of it working but better odds than power tune cleaning the carbs

 

[jerryjerry05]

This is my OPNION !!!
Seafoam is a waste of $$
I tried it as a carbon treatment or de-carb on a fairly carbon'd piston.
Did nothing.Mercury's Power Tune and OMC Engine tuner melts it right off.
OMC's Engine Tuner can come with an attachment to put it right into the fuel system.(never thought that was a good idea??)
Power Tune won't clean the carbs.Unless it gets into the bowl.
But it will remove a lot of the carbon build up and maybe help free a sticky ring and bring compression back up.

I use Chevron(with Techron) as a fuel system cleaner.
I mix 1/2 gal gas(and appropriate amount of oil add for the Chevron too) with a big bottle of the fuel system cleaner.
I unhook the tank or fuel line from the tank and run it through the system.
Once all the old fuel is burned.
I let it run for a couple of minutes and then shut it down and let it set over night.

Then run it for 20-min. and rehook the fuel lines.

Nothing will really get the real hard stuff out of the carb.
Unless you scrub and use a cleaner and a brush.
You'll need an orifice cleaner for the tiny holes in the jets.

If you run SF through the carbs and into the motor you'll wipe any oil from the bearings and rings and metal on metal with no lube???

 

[flyingscott]

Couple of things wrong with what jerry said
​#1 OMC Engine tuner does not have an attachment to put it in the fuel system. On an OMC motor there is a Schroeder valve on the primer it attaches to never goes into the fuel system or carbs.
#2 seafoam does not wipe the oil off of the metal surfaces it is a petroleum based product that be dumped right down the carb throat how else can you do a decarb.
#3 Techron is a waste of time you can't get enough in the system for a good soak even if you use the big bottle. Save your money and buy the carb parts you will need when you have to take them apart JMO

 

[oldboat1]

IMO, using any of those decarb products on a carburetor is more trouble than it's worth. By the time you go through any kind of proper process, you may as well have just taken the carb apart and cleaned it. Second, those products are likely to move stuff around. In the engine, stuff gets burned up. In a carb, not so much. Maybe third, carburetors suffer mainly from varnish build up (not carbon) in addition to various nasties fed through from the tank and lines. Decarb products might get at some of the varnish, if you get it into the guts of the carb, but dicey. Just no better option than disassembly, soaking, poking, spraying, etc. -- maybe soaking in some of the decarb stuff, if preferred. (I'm partial to lacquer thinner.)

[edit. metal parts only, btw. -- maybe another reason to skip flushing with a solvent, come to think of it.]

 

[ondarvr]

Hi all,

Still a newbie boater here. I know if you really want to clean carbs, you need to take them apart. However, I'm lazy and bought a can of Power Tune to see if it will do anything. Looking for help on where to spray this. I attached a pic. Do I spray right into where I'm pointing?

Thanks,
Kevin

To answer this exact question, no, it will do nothing. You can't clean a carb by spraying something down the throat, there's nothing there that needs to be cleaned, it's a total waste of time and money. If you want clean carbs take them off and do it.

 

[jerryjerry05]

In 1987? I bought a Ford Ranger . I did the ​Chevron thing to it.
I ran it just about out of fuel.
Added the Chevron and started driving.
I could tell the difference as I drove down the road.
Went from 12mpg to almost 20.

Was rebuilding a 88/125 Force.
The pistons (3) were in good shape but had carbon build up.
4th was replaced.
I did a test with Powertune and Seafoam.
I let one piston soak in each of the products.
The SF did nothing the PT melted the carbon.

 

[oldboat1]

should resurrect the old(ish) water misting thread with Frank. Running in the rain.....

 

[Jiggz]

should resurrect the old(ish) water misting thread with Frank. Running in the rain.....

Yeah but that is more for decarboning the cylinders and piston instead of carb cleaning.

 

[oldboat1]

I agree. IMO, no quick fixes for outboard carb cleaning (unless you rebuild a few of them, then it becomes routine.) Decarboning is a different exercise.