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2 stroke with no power? #4605894
12/17/17 12:10 AM
12/17/17 12:10 AM
Joined: Nov 2009
Posts: 4,979
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,979
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.

Re: 2 stroke with no power? [Re: motor_oil_madman] #4605897
12/17/17 12:17 AM
12/17/17 12:17 AM
Joined: Apr 2015
Posts: 387
Reunion Island
Superflan Offline
Superflan  Offline
Joined: Apr 2015
Posts: 387
Reunion Island
Do compression test?


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: 2 stroke with no power? [Re: motor_oil_madman] #4605899
12/17/17 12:19 AM
12/17/17 12:19 AM
Joined: May 2010
Posts: 9,188
North Carolina
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,188
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


13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: 2 stroke with no power? [Re: motor_oil_madman] #4605944
12/17/17 03:59 AM
12/17/17 03:59 AM
Joined: Feb 2015
Posts: 2,226
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,226
Slovenia EU
+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...


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: 2 stroke with no power? [Re: motor_oil_madman] #4605945
12/17/17 04:00 AM
12/17/17 04:00 AM
Joined: Apr 2009
Posts: 233
Reno, Nevada
Langanobob Offline
Langanobob  Offline
Joined: Apr 2009
Posts: 233
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.

Re: 2 stroke with no power? [Re: Kamele0N] #4605990
12/17/17 08:16 AM
12/17/17 08:16 AM
Joined: Jun 2011
Posts: 1,056
Texas
wag123 Offline
wag123  Offline
Joined: Jun 2011
Posts: 1,056
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.

Re: 2 stroke with no power? [Re: wag123] #4606059
12/17/17 10:02 AM
12/17/17 10:02 AM
Joined: Feb 2009
Posts: 1,583
wv
krismoriah72 Offline
krismoriah72  Offline
Joined: Feb 2009
Posts: 1,583
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.

Re: 2 stroke with no power? [Re: krismoriah72] #4606164
12/17/17 12:36 PM
12/17/17 12:36 PM
Joined: Jun 2011
Posts: 1,056
Texas
wag123 Offline
wag123  Offline
Joined: Jun 2011
Posts: 1,056
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).

Re: 2 stroke with no power? [Re: motor_oil_madman] #4606574
12/17/17 08:10 PM
12/17/17 08:10 PM
Joined: Apr 2016
Posts: 78
West Central , FL
johnD2 Offline
johnD2  Offline
Joined: Apr 2016
Posts: 78
West Central , FL
did it run fine before you quit using it ?


2000 Silverado Short Wheelbase 4.8 L 4x4
Wix 51522 / Mobil 1 HM 10w40
2016 F150 crew cab 5.0 2WD
Wix 57502 / PP 5W20

Re: 2 stroke with no power? [Re: motor_oil_madman] #4607002
12/18/17 09:40 AM
12/18/17 09:40 AM
Joined: Nov 2009
Posts: 4,979
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 4,979
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.

Re: 2 stroke with no power? [Re: motor_oil_madman] #4607134
12/18/17 12:18 PM
12/18/17 12:18 PM
Joined: Apr 2016
Posts: 78
West Central , FL
johnD2 Offline
johnD2  Offline
Joined: Apr 2016
Posts: 78
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 / Mobil 1 HM 10w40
2016 F150 crew cab 5.0 2WD
Wix 57502 / PP 5W20

Re: 2 stroke with no power? [Re: motor_oil_madman] #4608621
12/19/17 07:55 PM
12/19/17 07:55 PM
Joined: Oct 2006
Posts: 1,667
Oshawa, Ont. Canada
irv Online content
irv  Online Content
Joined: Oct 2006
Posts: 1,667
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/


2017 Chevy Impala 3.6 L.
2013 Ram 5.7 L Hemi Bighorn QC 4x4
2008 Chevy Malibu 2.4 L Ecotec
Pennzoil Platinum and/or Pennzoil Ultra Platinum for all 3.
Re: 2 stroke with no power? [Re: irv] #4609053
12/20/17 08:30 AM
12/20/17 08:30 AM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
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.

Re: 2 stroke with no power? [Re: motor_oil_madman] #4609055
12/20/17 08:36 AM
12/20/17 08:36 AM
Joined: May 2010
Posts: 9,188
North Carolina
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,188
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.


Last edited by spasm3; 12/20/17 08:38 AM.

13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: 2 stroke with no power? [Re: motor_oil_madman] #4609086
12/20/17 09:15 AM
12/20/17 09:15 AM
Joined: Apr 2009
Posts: 95
Florida
gotnogunk Offline
gotnogunk  Offline
Joined: Apr 2009
Posts: 95
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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