Engine Tuner??

[flippinstick]

I am wanting to use a can of engine tuner on my motor, whats the best way to use this? Its the spary like WD-40 with straw. I had my motor 1998 Evinrude Intruder 175 rebuilt 1.5 years ago and bottom right cylinder (#5) is 20-25 pounds lower than the rest. Could this be a stuck ring? It has been this way since it was rebuilt. This will be my first time decarbing this motor. It runs perfect with no problems what so ever except the speed is way down. Im turning 5600 rpms with a 4 blade 23p shooter running 50mph on a 18'9" Ranger 461vs. I tried a 24 raker (factory called for) and it would only turn 5200 rpms at 49.6 gps. Very slow and need help. Thanks Joe

[Jay Smith]

I like the Quickleen or Sea Foam liquids added to fuel...

IMO LOTS EAISER......

[Instigator]

I like the Quickleen or Sea Foam liquids added to fuel...

IMO LOTS EAISER......


never heard of that stuff, does it work as good?? If so, that'd be a great product to throw in on a regular basis.

I know on about 80% of the blown/dead motors I tear down they have stuck rings which let the flame propigation blow by the rings, cook the oil of the sleeve and sticks a piston.

flippinstick, that's a good place to start but if one hole is off 25lbs I doubt that will correct it.

[trashy]

I'm not a big fan of the "mechanic in a can" type stuff, but Seafoam is some pretty good stuff and can be found at any auto parts store. Here's there website where you can read the MSDS on it.

http://www.seafoamsales.com/products.htm

Quicklean is a Mercury product that you should be able to get from any Mercury dealer.

I have used both products and have been pleased with both.

[Forkin' Crazy]

I honestly don’t think a fuel additive will free stuck rings. It may prevent them, but in not free them. I have used Engine Tune to unstuck rings by using a shock treatment. Get the cylinder as close to vertical as possible by tilting the motor up to full tilt, lowering the tongue jack all the way, and turning the motor to where the cylinder down on compression is pointing as far up as possible. Then roll the motor up to TDC on that cylinder, then fill the cylinder with Engine Tune, replace the plug hand tight, and let it sit. I do this several times over a period of days if there is a lot of carbon build up.

You also can get a different fuel enrichener knob with a Schrader valve. They sell the Engine Tune with a hose that can be screwed on to the Schrader valve. But that is more for general maintenance. I think you are supposed to run a can or two through it every 25 to 50 hours. Bombardier also makes a product called Carbon Guard that you mix with fuel. I have been using it for several years now and am satisfied with the results.

Hope that helps.

[Mr. Spack]

I have been using Carbon Guard in my crossflows regularly as well as decarbing with OMC Engine Tuner seasonally but as said it is a preventative measure.

I run the motor till it is warm and then flood it with engine tuner through the shrader valve on the primer. After sitting and soaking for between an hour and over night I'll run the motor till warm and then WOT for a couple runs to clean it out. Then change the spark plugs.