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Donald
Donald, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1946
Experience:  I have 25+ years of experience repairing 2 & 4 cycle engines
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My Echo PB413H leaf blower stalls after 20 min. use.

Customer Question

My Echo PB413H leaf blower stalls after 20 min. use.
Submitted: 5 months ago.
Category: Small Engine
Expert:  Donald replied 5 months ago.

Hello. Thank you for choosing Just Answer. My name is***** will be happy to assist you.

Expert:  Donald replied 5 months ago.

Will your engine restart after it stalls?

Customer: replied 5 months ago.
after it cools off. than it works for 20-25 min and stalls.
Customer: replied 5 months ago.
I did change carburetor, all filters, fuel lines.
Customer: replied 5 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Donald replied 5 months ago.

I am back with you. sorry for the delay. Are you requesting a phone call?

Customer: replied 5 months ago.
no we can write
Customer: replied 5 months ago.
Do you have an answer
Customer: replied 5 months ago.
do you have a chat window
Expert:  Donald replied 5 months ago.

Thanks for letting me know. There is a possibility that your compression could be dropping too low, after your engine heats up.

Expert:  Donald replied 5 months ago.

Do you have a compression tester?

Customer: replied 5 months ago.
No i do not
Customer: replied 5 months ago.
How I can check without tester
Expert:  Donald replied 5 months ago.

No problem. Are you familiar with removing your muffler?

Customer: replied 5 months ago.
Expert:  Donald replied 5 months ago.

When you have a chance, remove your muffler, to see if you notice any scoring on your piston and cylinder.

Expert:  Donald replied 5 months ago.

If your piston or cylinder has some wear, it can get worse as your engine heats up.

Customer: replied 5 months ago.
you mean like a scraches
Customer: replied 5 months ago.
I can get new piston and rings do you think if I change this It will work
Expert:  Donald replied 5 months ago.

Yes, like scratches. Keep in mind that heats causes expansion. If you already have a small amount of compression lose when your engine is cold, it will gradually decrease more as you operate your engine.

Customer: replied 5 months ago.
But when it is cold it works fine with full power.
Expert:  Donald replied 5 months ago.

I agree. The other possibility could be a lose of spark, after you run your engine for 20 minutes.

Expert:  Donald replied 5 months ago.

Have you checked for spark, immediately after your engine dies?

Expert:  Donald replied 5 months ago.

These are troubleshooting questions, to help pinpoint our problem.

Customer: replied 5 months ago.
the spark is ok. If I lower the power after it starts to stall it works on idle fine for about another 5min and than it stalls.
I have to wait 30 min for the blower to coll of and it works again
Customer: replied 5 months ago.
Why It works on idle.
Expert:  Donald replied 5 months ago.

Thanks for this information. I would remove your muffler, then go from there. It will also be great if you can borrow a compression tester.

Customer: replied 5 months ago.
How do i use the tester if it very hot.
Expert:  Donald replied 5 months ago.

You would just remove your spark plug, then insert the tester in your spark plug hole. You can use gloves as you are doing this.

Customer: replied 5 months ago.
What is the normal compression when it is hot
Expert:  Donald replied 5 months ago.

100 psi or up ...

Video - Click Here

Customer: replied 5 months ago.
Ok I will get a tester and try it. If it is less then 100 psi is this mean I need a new cylinder?
Expert:  Donald replied 5 months ago.

Very good! I would look at cylinder and piston through your muffler, just to be sure the parts are bad. The problem could be rings only.

Customer: replied 5 months ago.
OK Thanks
Expert:  Donald replied 5 months ago.

You are very welcome!

Customer: replied 5 months ago.
Hi!
I just got a compression tester and I tested on cold and hot and it is more than 100psi.
So it is fine but the blower has the same problem.
I do not know what to do any more maybe just trow away what do you think.
I just hate to do this it is not very old blower.
Expert:  Donald replied 5 months ago.

Thank you for checking. You have already checked to see if you are still getting spark to your spark plug after your engine stalls. You stated that your spark is ok. Have you tried a new spark plug? Also, if your fuel tank is not properly venting, you fuel flow could get restricted after 20 minutes.

Expert:  Donald replied 5 months ago.

You and I can continue from here. I wouldn't give up and throw it away.