removing restrictor inside the muffler

[Wheelman-111]

Greetings:

Man, check the dates on this thread! Surely someone since has offered an explanation, perhaps in Technical Documents?

If you are looking down into the cylinder, holding your Craftsman drill, Hold it RAT THAR, Pard! The restriction is in the exhaust pipe header, down into the Black Hole of the exhaust pipe, not the cylinder. If something down in there cones down to a quarter-inch, that's your restriction. If something in your CYLINDER exhaust port does the same, that's a bunch of carbon. Can it be scraped out with a hard plastic or wood scraper? If so, go nuts.

[Rowbear]

thank you, next time I take the muffler off I'll see if I can get some of that carbon out of there. I didn't see any kind of restrictor in the head of the muffler though, maybe it's been removed already. Is my spree possibly staying under 25 mph because I've been pre-mixing gas un-wittingly while my oil pump is adding extra oil to the fuel? What I'm saying is, would too much oil in the fuel slow the spree down?

[Wheelman-111]

Greetings:

Too much (~doubling...) the oil might indeed slow it down, but I suspect the Cone O' Carbon you're seeing is covering that restrictiing washer. Poke around in there with something sharp.

[Rowbear]

the cone of carbon isn't in the muffler though, it's in the part attached to the engine, that's why I can't get a real good look at it because of the frame being in the way. I did take it back off and tried some carb cleaner plus a screw driver to scrape but it felt like metal to me and I know what a carbon deposit feels like because I drive a geo metro (they get them in the egr really bad)

[evilone]

Too much oil will make it run lean. The fuel is what cools your motor and adding oil is taking away fuel.