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Echo CS 440 wont idle up


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12-06-14, 08:54 AM   #1  
Echo CS 440 wont idle up

Have an Echo CS 440. Idles great but hit the trigger and it dies. Have cleaned carb twice then installed a complete rebuild kit. The Wt 416c carb is a strange design as the fuel return comes out the top of the pump side and the fuel intake, from tank, is in the side of the carb body. If I lock the throttle it will start at high idle but die. I also swapped the lines, won't start. New plug, filters, cleaned tank, fresh fuel! Might make a cool mailbox holder! Please help. Thanks.

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12-06-14, 09:05 AM   #2  
It sounds like a problem with the choke.

 
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12-06-14, 10:10 AM   #3  
Thanks for responding Pulpo. I would agree accept for the fact that it idles perfectly. With the air cleaner off, I can see that the chock is opening and closing properly?

 
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12-06-14, 10:44 AM   #4  
Have you made adjustments to the mixture screws? Sounds like the H speed screw needs to be backed out a little.


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12-06-14, 12:30 PM   #5  
Thanks for responding cheese. I have tried to adjust the high side.

 
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12-06-14, 02:11 PM   #6  
In that case, look for loose carb or manifold hold down nuts or bolts. Air should enter through the top of the carb only.

 
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12-06-14, 02:17 PM   #7  
Echo CS 440 wont idle up

Yes, all filters replaced

 
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12-06-14, 02:21 PM   #8  
Echo CS 440 wont idle up

Have done that. All gaskets are good or have been replaced.

 
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12-06-14, 02:22 PM   #9  
I guess that our posts crossed. I edited mine in between. Look for loose carb or manifold hold down nuts or bolts. Air should enter through the top of the carb only.

 
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12-06-14, 02:30 PM   #10  
Echo CS 440 wont idle up

I think they did. I have checked all the hardware. All the gaskets are good or replaced.

 
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12-06-14, 02:33 PM   #11  
You have to put a wrench on those nuts & actually try to tighten them before you can say that they are good.

 
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12-06-14, 02:39 PM   #12  
Echo CS 440 wont idle up

Gotcha. I did that, all tight.

 
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12-06-14, 04:00 PM   #13  
Check the metering lever and make sure it is high enough. It's the tiny lever that connects to the inlet needle. I normally look for them to be level with the carb body on most carburetors.


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12-06-14, 08:41 PM   #14  
Echo CS 440 wont idle up

Thanks cheese!. I replaced it but did not check it! Keep your fingers crossed.

 
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12-08-14, 10:55 AM   #15  
: Echo CS 440 wont idle up

I pulled the carb back off, looked at the metering lever. It looked a bit low so I pulled it up a bit, even or a hair higher than the body but the bottom of the lever is not showing then worked it to make sure of the adjustment.Checked the fuel line, vent hose and pulse port tube again for blockage, removed the fuel filter and tank vent check valve, started it without vent and fuel filter-still won't accelerate. Also tried tweaking the fuel mixture screws again. I let it warm up before hitting the throttle then killed it , took the plug out and it was black like it was oil fouled(or maybe fuel fouled?). Gap was good, .030. My mix is 40:1. I am now on a mission!

 
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12-16-14, 12:34 PM   #16  
shellx ---Have you found the problem? I just read this post and may be able to help.

 
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12-16-14, 08:00 PM   #17  
Have you checked to be sure the exhaust isn't clogged? Usually clogged exhaust won't kill it, it just won't rev, but still worth checking.


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12-17-14, 02:29 PM   #18  
Ya, I did check the exhaust. Ordered a carb. Expensive booger, hope that does it!

 
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12-17-14, 02:35 PM   #19  
Not yet. Ordered a carb. Thanks for responding!

 
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12-17-14, 03:06 PM   #20  
The impulse line connects to the fitting on top of the carburetor. Fuel line connects to side tube.

 
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12-21-14, 12:35 PM   #21  
Echo CS 440 wont idle up

Got the carb, fired it up, allis good! Thanks for everyones help!

 
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12-21-14, 10:07 PM   #22  
Glad you got it!!!!!!!!!!


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