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Echo SRM 230 idling high #5444225 06/01/20 08:40 PM
Joined: Oct 2009
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CDX825 Offline OP
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Joined: Oct 2009
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Having issue with an Echo SRM 230. It will start and run but idles high.

I have messed with the throttle stop trying to lower it but it just cuts out. The odd thing is if you unscrew the gas cap it will idle normal but as soon as you tighten it back up it will start acting funny.

I stuck a new carb on it thinking it was the problem but it acts the same.


1984 Ford F250 6.9 Diesel C6 2WD Rotella T 15W40 NTZ Bypass Filter

1992 Mazda B2600 4x4 Amsoil Series 3000 5W30

1998 Ford Ranger 4x4 Pennzoil Platinum 5W30

Re: Echo SRM 230 idling high [Re: CDX825] #5444254 06/01/20 09:45 PM
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Rand Offline
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put a new lid on the gas tank?


2019 Jeep Cherokee Trailhawk 2.0T
2020 Hyundai Elantra "Value Edition"
Re: Echo SRM 230 idling high [Re: CDX825] #5444273 06/01/20 10:24 PM
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ls1mike Offline
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Sounds like a clogged vent in the gas cap.


Mike
00 Trans Am WS6 5.7 LS1
17 Silverado 3500HD 6.0
14 Caprice PPV 6.0
15 Malibu LTZ Turbo
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Re: Echo SRM 230 idling high [Re: CDX825] #5444523 06/02/20 09:40 AM
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m21bmr Offline
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Originally Posted by ls1mike
Sounds like a clogged vent in the gas cap.


It could be the tank vent. The vent isn't in the cap on these models, it is the type that is located at the end of one of the tubes exiting the gas tank through a 3-hole grommet. A picture of the vent is below...

[Linked Image from images-na.ssl-images-amazon.com]

Re: Echo SRM 230 idling high [Re: CDX825] #5444556 06/02/20 10:48 AM
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MacManus99 Offline
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I'm very glad that you posted this, and that I came across it. Having the exact same problem with my SRM 230. Looking forward to giving this a try.


2016 Chevrolet 2500 - 6.0L
2013 Scion FR-S - 2.0L
2012 Ford Escape - 3.0L
Re: Echo SRM 230 idling high [Re: CDX825] #5444785 06/02/20 04:58 PM
Joined: Oct 2009
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CDX825 Offline OP
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changed the fuel line and vent assembly with the new carb. Same behavior as before changing it.


1984 Ford F250 6.9 Diesel C6 2WD Rotella T 15W40 NTZ Bypass Filter

1992 Mazda B2600 4x4 Amsoil Series 3000 5W30

1998 Ford Ranger 4x4 Pennzoil Platinum 5W30

Re: Echo SRM 230 idling high [Re: CDX825] #5445167 06/03/20 10:13 AM
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m21bmr Offline
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Idling high suggests it could also be an air leak (additional air entering the combustion chamber not through the carburetor throat).

There could be several locations for that to occur: crankcase seals, carb not mounted snugly against the intake insulator, intake insulator not mounted snugly to the cylinder, crack in intake insulator, damage to gaskets, etc.

Re: Echo SRM 230 idling high [Re: CDX825] #5445307 06/03/20 12:38 PM
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BrianF Offline
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At this point, maybe spray carb cleaner in and around the carb sealing points and as best as one can around the crank seals. Good luck!


2006 Trailblazer LT. QSUD, Fram Ultra.
2017 Ram 3500 SLT Megacab. Duron SHP 10w30, Baldwin BT7349.
1993 GMC 1500. QSAD, Fram PH5
Re: Echo SRM 230 idling high [Re: CDX825] #5446197 06/04/20 03:14 PM
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CDX825 Offline OP
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I was kinda thinking vacuum leak. Only thing I don't understand is why the gas cap being on or off would affect it.


1984 Ford F250 6.9 Diesel C6 2WD Rotella T 15W40 NTZ Bypass Filter

1992 Mazda B2600 4x4 Amsoil Series 3000 5W30

1998 Ford Ranger 4x4 Pennzoil Platinum 5W30

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