issues with weed whacker

[tenlizard]

my weed whacker runs fine at idle and starts pretty well
my engine won't accelerate though when i press down the throttle it slows down and sounds like it's either being starved or flooded with fuel

i will put on a video tomorrow and put on pictures of my carb so someone can identify the parts of it

 

[Russ2251]

Possibilities are many. Coked up exhaust is one. Clogged air cleaner is another.

 

[tenlizard]

what do you mean by a coked up exhaust?
and yes i do need to put in a new air filter

 

[kibble]

Coke is that crusty stuff that builds up on the insides of engines.

 

[Russ2251]

what do you mean by a coked up exhaust?

Carbon build up.

 

[tenlizard]

yes i think i need to remove the carbon off the cylinder head, piston, and valves. it's a pretty old weed whacker. I remember once i tried running it without the air filter and it didn't change/help anything. i personally think it's the carbon build up. also when it did run well...it smoked furiously!!! what are causes of this?? and also i can't find any gas adjustment screw like on my other engines

 

[2or3wheels]

it sounds rich, the carb is out of adjustment, play with those.

 

[tenlizard]

it sounds rich, the carb is out of adjustment, play with those.

play with what?

 

[jr dragster T]

Valves? It's most likely piston-ported.

 

[2or3wheels]

no the air/fuel mixtures on the carb.

 

[Russ2251]

yes i think i need to remove the carbon off the cylinder head, piston, and valves.

Just clearing muffler and exhaust port is enough. Don't use metal.

 

[Gungatim]

all 2 cycles need to be de-carboned on the exhaust side as regular maintenance. They burn oil with the gas...it's just part of the nature. Many engine manuals will spell out how often to remove exhaust and clean out the carbon. you could also be having a fuel delivery problem,carb may just need to be cleaned and/or new diaphragm.

 

[tenlizard]

i cleaned out whole engine and cleaned out coked up exhaust now it runs great! thanks for help! however i can't remove carbon deposits from piston because i can't access the top of it for some reason!

 

[tenlizard]

My weed whacker runs great but there is one problem...when it runs, i can't find out where it's coming out from, but gooey black sludge gets all over the engine and i clean it off and it takes about 1 month to come back? what is this sludge stuff...i don't like it leaking all over the place and it makes my engine hotter when it's running

 

[pmat]

Make sure there isnt too much oil in the gas.

 

[BradenM]

When you cleaned out the exhaust, did you re-use the gasket? time to replace it my friend.

 

[oscaryu1]

They say another way to chemically (not manually) remove any carbon buildup is to mix a certain amount of Techtron Fuel System Clearner thingie (it's a black bottle with a weirdish long neck)

and then just mix it in (a pretty darn high ratio) with oil and gas, and then just run it.

It supposedly melts the carbon out and drips it out of the muffler...

Never tried it, but I don't use 2 strokes often.

And if anyone DOES try it, NEVER rev it. Common mistake - Chunks of carbon come off and get stuck

 

[tenlizard]

When you cleaned out the exhaust, did you re-use the gasket? time to replace it my friend.

this is most likely the problem thanks dude i'll let yall know how it works!