Oil!!!!!

Nobody told me I have to put oil to the gas!!!


Just kidding, Come on guys!!!! I ´ve been running Ryobis for years now, also my 6 years old 35 cc US engine with the regular 32:1 gas mix. Of course i use oi in the mix.

The engine was sent from a friend who also is familiar with gas engines and I ´m sure he also use oil too. ( he got the engine brand new in a trimmer) But not to use oil would be like go to the field and don´t know you have to charge the transmiter as well as the receiver, don´t you think???

In fact afeter varuious attemps to carburate it I dissambled the carb and found some little white dirt and fibers in one of the holes, I guess this moved forward and bacwards when going from iddle to high or vice versa and from time to time make the engine to quit due to insuficient fuel input.
I sent the engine back to my friend and ask him to test it now that the carb is clean, but he hasn´t answer yet.

That´s the only answer I can figure out, because the engine run well for about a minute in high rpms and then started to slow down until quits. After that it won´t start even when extremely choked and near to melt the starter.

Then I tought it could be loosing some compression when get too much heat, because when you let it cool down a bit, after that will start considerable easy again.
When dissambled the cylinder I saw a big brown stain coming from the top of the cylinder down to past the ring, at the position of one of the ports opossite to the exhaust port, indicating that the ring has some kind of compression lost in that point. If it is normal, then I blamed on the fuel port slot ( that one created to acomplish california anti modelers but environmental favored regulation)

resuming, teh causes for the malfunction would be:
1.- carburetor problem ( some dirt, needles regulation, etc). don´t think so.
2.- Compression problem. ( may be, the stain in the cylinder at the fuel port, no easy start when hot)
3.- Need more break in...also may be.

Please vote, let me know what you think.

I got all my ryobis from semi used trimmers, so they where very well broked in and run great, A brand new homelite I got recently start by hand and run like a dream, even with no break in at all...i don´t know what to think now.

thanks for the interest.
Tato