Engine Stalls & Dies


Old 10-01-02, 12:03 AM
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runs only a short time

This is a Murry push mower, 4.5 or 5 horse, not sure. Problem is... mower starts right up, runs about 30 secs, then dies down and will not start back up again unless you wait 30 mins or so. Not sure what the deal is. Carburetor has been replaced, so Im thinking its electical...?? Thanks for any help.
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Old 10-01-02, 05:19 AM
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Hello: Mombo

Before assuming the problem is electrical, it must be verified that the problem isn't fuel flow related.

There may not be a steady and or full volume flow of fuel into the carb. Remove the fuel line hose at the carb and allow fuel to flow out for about 1/2 to 1 minute.

The flow rate and volume must remain constant. If there is any slow down in the rate during this time, remove the fuel tanks cap and note any difference.

If the flow rate continues to remain slow or stops, there is a restriction in the tank, fuel line or the vent hole in the fuel cap is plugged and or restricted. Removal of the cap will allow full flow to return to full flow.

Check the fuel filter. This filter may be inside the tank or inline.

Check the spark plug also. If there is no spark when the engine dies, first replace the plug before assuming it's an electrical problem.

Most likely I have not covered all of the potential possibilities. The other resident small engine service and repair professionals may offer additional suggestions, advice & help.

Check back on your topic several times over the next several days for additional replies.

Read the other postings and replies offered on this same type of problem topic in the RECENT & ARCHIVES postings, within this forum, for additional help & information on this subject.

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Old 10-01-02, 08:26 PM
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Hello Mombo!

Tom has good advice. Follow it. I wanted to add that this sounds like a bad armature/coil. Check for spark when the engine dies. If the plug won't spark, try a new one. If that doesn't do it, then remove the small black wire connected to the coil. See if it sparks then. If not, you have a bad coil/armature. If it does spark, it may be that the engine has cooled enough by the time you got everything apart and the wire disconnected, so you will have to be quick about doing the work before the coil cools.
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