Engine tune-up spray

[iggyw1]

I have an older Johnson 35 H.P. that runs pretty great right now. Had problems with it, but with the help from guys on this site, she is running pretty good currently. My question: The motor is a 1983 model. I have a can of this spray that is labeled as Evinrude engine tune-up. It says to spray it into the throat of the carb until the can is empty while engine is running pretty good on RPM's. Run the motor for about 10 minutes. Then let the thing sit for 8-15 hours. After that time, run the engine again at pretty good throttle for about 10 minutes and that will clean out the engine. I read the on line reviews on the product. The reviews are mixed, but mostly good reviews. The bad reviews were mostly saying the spray does not do too much and a waste of money. Since I already have the product and cannot return it, what is the general opinions here on if I should do it or not? Has anyone on here used this product or a similar one? Thank you!
EDIT: I currently use SeaFoam with every tank of gas.

 

[dwco5051]

Probably the same as Seafoam but labeled for OMC motors. People have been using it for years on outboards.

 

[saltchuckmatt]

I've used it.....I think it works but not if your engine isn't carboned up.

Are you having problems with your motor?

 

[iggyw1]

I've used it.....I think it works but not if your engine isn't carboned up.

Are you having problems with your motor?

No problems currently, but if you remeber not too long ago, I had a problem with the motor just shutting off like someone turned the key off. You helped me out with that problem and it's been solved since I replaced the power pack on the motor. I just happen to have the Evinrude spray on hand so I figured I would use it up. Does not seem to be carboned up, so I was just wondering if it was "overkilll" if I were to use it on a good running motor? Can't hurt it any, correct?

 

[iggyw1]

Probably the same as Seafoam but labeled for OMC motors. People have been using it for years on outboards.

Thanks. I figured it would be just about the same as the Seafoam I have been using, but at a higher dosage since I would be spraying it full strength into the carb per directions. It probably does not need it, but I have it on hand in my garage for a couple of years now, and I do not know the shelf life of the product, so I figured instead of just throwing it out, I would use it up if it will not hurt the motor. I am assuming it will not hurt anything, but I did not want to just take an uneducated guess at this.

 

[saltchuckmatt]

No, can't hurt. All the products I used to use, and yes I have a bunch of crap sitting on my shelf, usually did a good job.

Carbon cleaner, fogging oil, electrical contact wax....yada yada yada. All works but as I age I use it more now when I need to not just for the hell of it.

Seafoam in every tank of gas just makes you have less money.

If you idle and troll for fish and not zoom around, use carbon guard. If you troll but zip around finding new spots to fish then you don't need it.

I hand clean my plugs lots...its easy. When I was young, new plugs all the time. What a waste.

So, just use your noodle. Cheap parts...nope. New in a can? Nope.

Pretty sure you will figure it out, it just takes time.

 

[iggyw1]

No, can't hurt. All the products I used to use, and yes I have a bunch of crap sitting on my shelf, usually did a good job.

Carbon cleaner, fogging oil, electrical contact wax....yada yada yada. All works but as I age I use it more now when I need to not just for the hell of it.

Seafoam in every tank of gas just makes you have less money.

If you idle and troll for fish and not zoom around, use carbon guard. If you troll but zip around finding new spots to fish then you don't need it.

I hand clean my plugs lots...its easy. When I was young, new plugs all the time. What a waste.

So, just use your noodle. Cheap parts...nope. New in a can? Nope.

Pretty sure you will figure it out, it just takes time.

Thanks again. I am not young any longer, but I, like you said when you were young, you used new plugs all the time & what a waste. I put new plugs in every year in the spring after our Michigan winter. I only have to buy two of them, so it's not hard on the wallet at all, but probably a waste like you said. They are easy to clean, I just don't do it.

Edit: I do not troll with my 35 H.P. I have an electric troller that I use for trolling. My 35 is just used to zip along to get me to my fishing spots. Sometimes only about 100 yards or so at a time, and sometimes 3-4 miles.

 

[saltchuckmatt]

I use a stainless wire brush, then spay them with carb cleaner, blow them out with compressed air and then I heat them up with a propane torch just near the bottom to get any moisture that's left.

They look brand new to me.

Once the electrode is getting warn away, I toss them.

 

[jimmbo]

Probably the same as Seafoam but labeled for OMC motors. People have been using it for years on outboards.

No it is Not the Same as SeaFoam, as it actually does soften Carbon, so as to free up sticky Rings. SeaFoam, being mostly a very light Oil, simply makes a lot of Smoke
Merc's Power Tune is also Superior to SeaFoam, CRC makes a couple of Good Combustion Chamber Cleaners too.
Granted todays Cleaners are quite Weak compared to OMC Engine Cleaner from the late 60s thru the 70s. That stuff was very effective, but quite Toxic. I think it was almost straight Carbon Tetrachloride