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Engine wont stay running

Recently i had to replace the fuel lines in my toro 2-stroke trimmer.

I think i may have used a line that had to small of an inner dimension causing it to be fuel starved.

CAn you tell me what that dimension is supposed to be?

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  • 1windowpimp May 04, 2010

    Ok so if the fuel lines are connected correctly, what would cause the engine to stall out after 2-3 minutes of use.

    Could it be caused by incorrect spark plug or even incorrect gap on spark plug?

  • 1windowpimp May 07, 2010

    Is the coil a replaceable item?.. Thats sound alot like what is happening? kinda hard to start but once it starts it runs like a champ for about 3- minutes and dies...... Then wont start until several hours later.


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Make sure you hooked the lines up correctly. If the line you use fit the connections it should be okay. I have a sample sketch that may help you.Engine wont stay running - fb5293b.jpg

Posted on May 04, 2010

  • djcarmon May 04, 2010

    An incorrect spark plug or gap could cause problems. If the spark plug is old it could cause problems. 2 cycles can wear out spark plugs faster that a four cycle engine. Most 2 cycles use Champion RDJ47 with 0.020 - 0.025 air gap. Usually a bad plug will make one really hard to start. If yours is starting then sputters and quits your carburetor may need a new diaphragm and gasket set. You may want to check and see once it quits on you again if it is getting spark to the spark plug. You can take the wire off and connect a tester to it or remove the spark plug, connect the wire to it and ground it to the engine and pull the cord. You should see the spark plug sparking. If it doesn't spark your coil could be getting hot and breaking down after it runs 2 or 3 minutes. Hope this helps.

  • djcarmon May 07, 2010

    The coil is replaceable. Before taking it off check the air gap between the coil and the flywheel in order to set the new one at the right spacing. You can check at a repair shop or check Ebay to find the one you need.


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You can Purchase Fuel Line for Trimmers and All Lawn Equipment at your Local Small Engine Service Center or your Local Automotive PArts Retailer.
Take a Piece of the Old Fuel Line so you Purchase the Correct Size.
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck


jbridger (John)

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