Re: 2-stroke engine failures

Posted by frankiee on July 26, 2005 at 06:07:13 from (69.198.194.170):

In Reply to: 2-stroke engine failures posted by KYfarm on July 26, 2005 at 05:35:47:

Either bad luck with both breaking down at same time or something that is a common link.
Sounds like you suspect something to do with fuel.
Small engines therefore small jets.
I usually wind the jets in making sure to count the turns. Then back jet screws out again to original. Then open jet screws very open. Pull spark plug out so wont start and easy to pull over fast. Pull over many times with gas trigger wide open.
This is all to try to draw dirt or water out of carb.
Reset the jet screws to original positon and put plug back in.
Make sure the plugs are not wet from water.
A new plug makes starting hard to start things much easier. I buy small engine plugs by the half dozzen and am not afraid to use them. (I hate yanking on cords)
Squirt some fuel in the carb (just a bit) and try to start it. If it gets going, rev it and put the machine in some different positions. (This is to move water or dirt away from the fuel pick up if there is any left.
If you can keep it reving then close the choke to a point just before stalling the let the engine speed up again (This is to draw dirt or water out of carb by using the high vacuum of motor when choked)
If still no go then open the Jets again and crank untill it fires or does something.
After all that if it dont run I decide that it will be easier to pull the carb apart and do a major clean.
Small carbs are a bugger.
I was in the "futures" program when I was young and did small engines and my boss said that sometimes he would have to have a carb apart 2 or 3 different times if they had crud in them.
If it was contaminated fuel that you got and the crud got into the carbs then I wish you some luck.

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