Question about Homelite Mighty Lite Lawn Trimmer

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Cant start engin/ have good spark and seems to be getting fuel , replaced all gaskets and piston ring sill wont start,

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  • joe8513c Jul 22, 2009

    I have tried everything you suggested < wont egnite fuel even though it has a good spark< increased plug gap to 035 , Has a good blue spark

  • joe8513c Jul 22, 2009

    Have tried everything you suggested> Wont fire with starting fluid , There is a real good spark, Increased plug gap to .035 Turning over motor with a electric drill ,

  • joe8513c Jul 22, 2009

    Will get back to you tomrrow <<

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Parhaps the timing is wrong, try to recheck the igntion timmng and valve timming too.
Hope this helps!

Posted on Aug 04, 2009

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If you have rebuilt the engine, then check if all gasket are sealed,make sure everything is tight, next thing is to check the carb and valve, if it's a small two 2 stroke as I supposed it is,check the valve and make sure fuel is coming to the carb, increasing gap distance on spark plug will not make much difference.Try to choke the carb when startiing it,this may help as it's a new engine rebuilt.I suppose you have not touched anything that is to do with timing here, if you did then recheck for correct timing.The valve intake is normally located after the carb unless it is a 4 stroke engine.Make sure oil mixture is ok if applicable and there is no deposit in the carb causing this problem.

Posted on Jul 22, 2009

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Hi Joe. Let me help you with this annoying problem. Let's consider the fuel first. Be sure to use "new" fuel, meaning purchased within the last month. If your fuel is old pour it out of the trimmer and get fresh, new fuel. Now lets condsider spark, you say you have good spark. Excellent. Finally lets consider air. Be sure that your air filter is clean. Now let's give it a crank or two and see if it starts. If it doesn't I would get a carbeurator cleaner, a product like seafoam which you add to the fuel at the rate of one ounce per gallon. This will clean up the inside of your carbeurator with in a couple of tanks full.. Also get a can of starter fluid. Now give the air intake a squirt of starter fluid and pull the cord. The engine should start up. You may have to give it another squirt or two of starter fluid to keep it going so it is handy to ask a friend to assist you. Hopefully,. your problem is now resolved and you are back up and running. If not, read on.

Now. You indicated that you replaced the gaskets and piston ring. If your trimmer is still not running I would take a second look at your work, and check to be sure that the piston itself is not frozen up. If it is frozen up, that is your problem and you will have to use some WD40 or engine oil and a bit of emery cloth to loosen it up again.

Posted on Jul 22, 2009

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