engine floods

bluejeans

Member
Joined
Jan 1, 2015
Threads
7
Messages
17
I bought a Shindaiwa eb-45 back pack blower used and It looks like a home owner hardly used it. Even though it's a older unit, the compression is very strong..I got it running then it started to flood the engine. I removed the spark plug and turned it upside down drained the fuel out of the engine and waited for the fuel to evaporate. After a couple of hours, i tried to start it again. Within a couple of pulls it flooded where gas is coming out of the muffler. Since it was old, I replaced the fuel lines, rebuilt the carb, check the spark, and removed the muffler and the exhaust screen. This time it will not start and floods within a couple of pulls again. HELP
 

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
64
Messages
24,647
The tank vent is blocked causing the tank to pressurise overcoming the metering needle spring and flooding the engine.
Can be a separate line with a valve or a valve in the cap.
Don't have any Echo IPLs
 

primerbulb120

Moderator
Joined
Nov 3, 2014
Threads
43
Messages
1,315
I have come across 3 cases of the problem you describe:

1. I installed the wrong fuel pump diaphragm in the carb, causing the crankcase and cylinder to fill with fuel via the fuel pump impulse port. :laughing:

2. The needle valve got stuck open, causing the engine to flood.

3. I forgot to install the needle and metering linkage before re-assembling the carb. :laughing:

All of these were carbs I had just rebuilt.
 

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
64
Messages
24,647
which rebuild kit did you use ?
And what exactly did you replace?
The fuel pump only pumps 0.1cc at best per impulse cycle so after a few pulls you should not have raw fuel coming out of the muffler.
When did it start giving problems?
Something here is not adding up.
How was the trimmer stored ?
was it stored with the fuel tank full ?
Me thinks that fuel may have drained through the engine and filled the muffler while in storage.

What did the old pump & metering diaphragm look like when you removed them ?
 

bluejeans

Member
Joined
Jan 1, 2015
Threads
7
Messages
17
The rebuild kit is wat-10. I replaced the fuel lines. I think the pump center might be bigger. The Shindaiwa calls for a 020, but the replacement is the wat-10. No longer making the 020.
 
Top