1978 115hp rude idle question

[Mr.Stuart]

Re: 1978 115hp rude idle question

You've got it right. In the driveway let it run at 1k - 1.5k and cycle up and down. (Never let it go past 2k). Give the seafoam a chance to get into all the idle passages. Then shut it down and let it do its work for awhile. Blow it wide open on the water.

It'll smoke like a house on fire. Fear not.

Ok, I'll give it a go, hope it works, I'm kind of guessing that it will, the problem isn't very bad at all, and hardly noticeable.

I figured I'd pick up two cans of seafoam, use one can for the one gallon mix, then dump the other can in the 18 gallon tank then fill it up, between the two tanks, it should clear the problem up, and I'm hoping that I might see a little better fuel economy when I'm done, it really loves gas at this point, it likes sucking my wallet dry.

Stuart

 

[Mr.Stuart]

Re: 1978 115hp rude idle question

I still have the old NGK's I took out of it, I'll throw them back in and save the new champions for when I'm done doing the decarb, it seems to me, with as much as these two strokes like plugs, it wouldn't be a bad idea to have one of those little spark plug cleaners on hand, I used to have one that used sand blast media, but before the boat, I never had a use for it and when I thinned out my tools, I sold it at a garage sale, kind of kick myself for it now, I should probably pick up another one.

 

[iwombat]

Re: 1978 115hp rude idle question

I dump a can of seafoam and a can of fuel stabilizer into the headspace of my 1 gal outboard oil jugs (once I empty out a little). I just shake a little and mix that concoction up with the normal 50:1 ratio every time I fill up. That way each tank gets seafoam and stabilizer and I don't need to keep taking out nine little bottles of whatever in order to fill up the boat.

 

[Mr.Stuart]

Re: 1978 115hp rude idle question

I dump a can of seafoam and a can of fuel stabilizer into the headspace of my 1 gal outboard oil jugs (once I empty out a little). I just shake a little and mix that concoction up with the normal 50:1 ratio every time I fill up. That way each tank gets seafoam and stabilizer and I don't need to keep taking out nine little bottles of whatever in order to fill up the boat.

That’s a good idea, I'll start doing that, I've been filling the boat from the mixed 6 gallon gas cans because I kept screwing up the mix every time I filled the boat directly and almost always ended up with way to much oil, I have 2 6 gallon gas cans I keep full with oil mixed fuel, and when I'm done running the boat, I will pour one or both gas cans into it to fill it up again, so the boat always stays full with the correct 50/1 mix, but I'll start mixing in some sea foam and fuel stabilizer and maybe cure myself of this little idle problem.

iwombat, I'm going to send you a PM

 

[iwombat]

Re: 1978 115hp rude idle question

Get yourself one of the mix bottles with the fill marks for different gallons and ratios. Priceless.