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#4605894 - 12/16/17 11:10 PM 2 stroke with no power?
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4709
Loc: Houston, Texas
I was trying to get my old echo srm210 string trimmer running.This trimmer has two issues. One is it will run great for about 15 minutes, but once it gets good and warm it won't want to restart. The other is that it doesn't make any power. I bought a new trimmer and stopped using it. So far I've replaced the carburetor and fuel lines/fuel filter and cleaned the clogged spark arrestor clean. If I remember right, I couldn't get the muffler off to check the exhaust port on the engine block. That was a while back. I want to say the no restart when hot started after it sat unused for about 2 years.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4605897 - 12/16/17 11:17 PM Re: 2 stroke with no power? [Re: motor_oil_madman]
Superflan Offline


Registered: 04/28/15
Posts: 335
Loc: Reunion Island
Do compression test?
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Yaris 1.0 200mkm 10W40 ACEA A3/B4
Kangoo 1.5 DCi 120mkm 15W40 ACEA E7
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#4605899 - 12/16/17 11:19 PM Re: 2 stroke with no power? [Re: motor_oil_madman]
spasm3 Offline


Registered: 05/30/10
Posts: 8414
Loc: North Carolina
Check for spark when its hot. If no spark ignition module/coil unit.

Double check the part number below.

https://www.amazon.com/SHINDAIWA-GENUINE...ords=A411000140
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13 elantra 67k 5w30 QSUD
03 chevy avalanche76k synpwr 5w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 2200 miles m1 0w20/0w40 mix

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#4605944 - 12/17/17 02:59 AM Re: 2 stroke with no power? [Re: motor_oil_madman]
Kamele0N Online   sick


Registered: 02/09/15
Posts: 1937
Loc: Slovenia
+1 for coil test when warm...

For "no power" issue check exaust port...if piston has scratches than carburetor was set too lean in the past...
_________________________
2011 Hyundai i30 1.4 CVVT Shell Helix Ultra 5w40
1997 Toyota Landcruiser KZJ95 3.0 TD various 10w40

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#4605945 - 12/17/17 03:00 AM Re: 2 stroke with no power? [Re: motor_oil_madman]
Langanobob Offline


Registered: 04/24/09
Posts: 194
Loc: Reno, Nevada
When having problems the first step with a two stroke or any small engine is a new NGK spark plug and fresh fuel mix.

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#4605990 - 12/17/17 07:16 AM Re: 2 stroke with no power? [Re: Kamele0N]
wag123 Offline


Registered: 06/14/11
Posts: 813
Loc: Texas
Originally Posted By: Kamele0N
For "no power" issue check exaust port...if piston has scratches than carburetor was set too lean in the past...

+2
Either a carboned-up exhaust port or low compression will cause your problems. If the exhaust port is open and you see scratches on the side of the piston, you found your problem.

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#4606059 - 12/17/17 09:02 AM Re: 2 stroke with no power? [Re: wag123]
krismoriah72 Offline


Registered: 02/16/09
Posts: 1460
Loc: wv
My husqvarna did the same thing to me this past summer.. wouldnt restart after getting warmed up. I ended up dumping the fuel and mixing 32:1 Echo Blend and a few capfuls of stabil marine and run it like i borrowed it.. Japanese Tuneup lol.. Never did it again after that. Mine is 10 years old and has a ton of hours on it i feared i was going to have to buy a new one but that worked for me.

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#4606164 - 12/17/17 11:36 AM Re: 2 stroke with no power? [Re: krismoriah72]
wag123 Offline


Registered: 06/14/11
Posts: 813
Loc: Texas
Originally Posted By: krismoriah72
My husqvarna did the same thing to me this past summer.. wouldnt restart after getting warmed up. I ended up dumping the fuel and mixing 32:1 Echo Blend and a few capfuls of stabil marine and run it like i borrowed it.. Japanese Tuneup lol.. Never did it again after that. Mine is 10 years old and has a ton of hours on it i feared i was going to have to buy a new one but that worked for me.

Since he replaced the carb and other parts, I assumed he was using a FRESH fuel mix (not just fresh from the gas can, fresh from the gas station).

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#4606574 - 12/17/17 07:10 PM Re: 2 stroke with no power? [Re: motor_oil_madman]
johnD2 Offline


Registered: 04/11/16
Posts: 77
Loc: West Central , FL
did it run fine before you quit using it ?
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2000 Silverado Short Wheelbase 4.8 L 4x4
Wix 51522 / PYB 10W40
2016 F150 crew cab 5.0 2WD
Fram Ultra XG10575 / PP 5W20


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#4607002 - 12/18/17 08:40 AM Re: 2 stroke with no power? [Re: motor_oil_madman]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4709
Loc: Houston, Texas
Yeah it didn't have the hot start problem before.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#4607134 - 12/18/17 11:18 AM Re: 2 stroke with no power? [Re: motor_oil_madman]
johnD2 Offline


Registered: 04/11/16
Posts: 77
Loc: West Central , FL
Probably not a spark issue then , but I would put a new NGK in it anyways , they are about $3 at a local shop.
On those older echos , there is a gasket between the carb and the jug , I'd check that to make sure it's not restricting.
Make sure your lines did not get crossed , when you installed the new carb.
_________________________
2000 Silverado Short Wheelbase 4.8 L 4x4
Wix 51522 / PYB 10W40
2016 F150 crew cab 5.0 2WD
Fram Ultra XG10575 / PP 5W20


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#4608621 - 12/19/17 06:55 PM Re: 2 stroke with no power? [Re: motor_oil_madman]
irv Offline


Registered: 10/08/06
Posts: 920
Loc: Oshawa, Ont. Canada
I'm surprised there is no mention of Sea Foam in this thread? I hate to sound like a nut job talking about this all the time, but the stuff does wonders keeping things clean and enhancing the fuels.
With today's fuels, imo, getting worse due to Ethanol, I find it even more important to use all the time.
https://seafoamsales.com/sea-foam-motor-treatment/
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2017 Chevy Impala 3.6 Ltr.
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#4609053 - 12/20/17 07:30 AM Re: 2 stroke with no power? [Re: irv]
boraticus Offline


Registered: 04/19/09
Posts: 2863
Loc: Canada
Originally Posted By: irv
I'm surprised there is no mention of Sea Foam in this thread? I hate to sound like a nut job talking about this all the time, but the stuff does wonders keeping things clean and enhancing the fuels.
With today's fuels, imo, getting worse due to Ethanol, I find it even more important to use all the time.
https://seafoamsales.com/sea-foam-motor-treatment/


Keep telling yourself that. One day it might come true.

I drank the elixir Koolaid for a while, Seafoam included. Then I did some actual experiments using Seafoam by soaking carb parts in it. The end results were that it did nothing to remove varnish or clear galleries and jets. Even if left for days. An old toothbrush, a piece of thin wire, Varsol/solvent
and compressed air are far more effective.

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#4609055 - 12/20/17 07:36 AM Re: 2 stroke with no power? [Re: motor_oil_madman]
spasm3 Offline


Registered: 05/30/10
Posts: 8414
Loc: North Carolina
Originally Posted By: irv

With today's fuels, imo, getting worse due to Ethanol, I find it even more important to use all the time.


So your answer to alcohol in fuel is to add more alcohol?

Seafoam is overpriced alcohol.



Edited by spasm3 (12/20/17 07:38 AM)
_________________________
13 elantra 67k 5w30 QSUD
03 chevy avalanche76k synpwr 5w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 2200 miles m1 0w20/0w40 mix

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#4609086 - 12/20/17 08:15 AM Re: 2 stroke with no power? [Re: motor_oil_madman]
gotnogunk Offline


Registered: 04/12/09
Posts: 84
Loc: Florida
This may not apply to string trimmers but my echo chainsaw had the same problem and it was a clogged spark arrester screen in the exhaust
system just before the muffler.

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