Question about Poulan 25cc 2-Cycle Gas Powered String Trimmer with Curved Shaft #P1500

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My sst25 starts hard and stalls...seems to be sensitive to engine position before stalling...stalls when throttle is opened and when just runnung

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Had the same problem with my SST25 and after looking further, noticed something rattling around in the fuel tank. The fuel filter had fallen off of the small fuel line (actually the small fuel line had broken). Removed filter from tank and small piece of broken line from filter connector, and re-connected to small fuel line.

Posted on Sep 06, 2010

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Posted on Jan 02, 2017

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Having stalling issues with 2013 tucson


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How to Check? The MAP has three electrical pins, one for 12 volts (or 5 volts) reference, one for ground and the third (the middle one generally) is the 'signal' output. Put a voltmeter positive connector on the 'signal' pin of the connected socket (back probe by inserting a bit of wire). Apply suction to the vacuum input, even sucking on it with your mouth, should result in a measurable voltage output. At normal air pressure (open throttle) the voltage seen should be 0 volts. As vacuum is applied the voltage output should change to about 5 volts (throttle closed at idle). If no transition seen the MAP is faulty.

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Start with the simple and clean the throttle body and inspect any loose or damaged wire leads to the throttle body. Replace or repair any signs of damage.

Thank you for using Fixya and good luck.

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