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Posted on 6/25/19 at 5:35 pm to keakar
Having a compression tester is a good tool to have. You need to get you a new Echo SRM 230 tho.
Posted on 6/25/19 at 6:29 pm to Bedhog
quote:
Having a compression tester is a good tool to have.
well i have one, somewhere, just cant remember where it is. i have tools and tool boxes all over the place, some in the house, some on the shelf in the garage, some buried under a pile of junk in the garage.
quote:
You need to get you a new Echo SRM 230 tho.
no need for one
i bought two trimmers for $30 when i got this one, the craftsman is working like new now with just a new fuel filter and air filter cover but it looks like it was left in a ditch. the troy built looks brand new yet is the one im having all the trouble with.
so for the troy built it looked like it was in such great condition i just assumed it was going to run good so i spent $30 on a new gas tank, carburetor, and tune up kit for it, but i think the compression test will confirm that i just set fire to all that money.
This post was edited on 6/25/19 at 6:32 pm
Posted on 6/25/19 at 7:38 pm to keakar
Check to see if this type has a flame or spark arrestor on the muffler. It can get plugged with soot and if it does it will not start. Stihl is bad about this.
Posted on 6/25/19 at 7:59 pm to Bedhog
quote:
Having a compression tester is a good tool to have
Can you recommend a decent compressor gauge for small 2 cycle and 4 cycle engines for the DYIer?
Posted on 6/25/19 at 10:14 pm to GetmorewithLes
quote:
Check to see if this type has a flame or spark arrestor on the muffler. It can get plugged with soot and if it does it will not start. Stihl is bad about this.
thanks, the tester wont be here until friday so with nothing else to do i can pull the exhaust muffler off tomorrow and see if it starts then
This post was edited on 6/25/19 at 11:02 pm
Posted on 6/26/19 at 7:10 am to keakar
quote:
not sure what he might recommend but i just bought this one for the exact purpose you speak of LINK
Posted on 6/26/19 at 8:18 am to Bedhog
quote:
We only use OTC kits. All the big tool trucks just rebrand theirs from the OTC brand. Having the quick connect leads is where its at. LINK
Posted on 6/26/19 at 4:17 pm to GetmorewithLes
quote:
Check to see if this type has a flame or spark arrestor on the muffler.
pulled the muffler and its clear and free flowing, no sign of spark arrestor unless its internal to the muffler but its effortlessly free flowing regardless
shined a light in exhaust port to try and see the cylinder walls and i cant tell how deep the grooves are, but i see lots of vertical scoring on the cylinder walls, so i think its toasted.
i still dont have the compression tester yet to be 100% certain but after seeing the scoring inside, i can no longer deny the obvious that the engine is bad and its a lost cause
im gonna try stripping it and selling the parts on ebay, from what i see i should at least get back the money i spent on it that way
This post was edited on 6/26/19 at 4:22 pm
Posted on 6/26/19 at 4:25 pm to keakar
quote:
the one time i did get it to start was only after i put a few tablespoons of 30w oil directly into the cylinder to see if it was a compression issue and it started and ran just long enough to blow all that oil out and then died.
I tried this little trick with my blower yesterday with some 80 weight gear oil and it fired right up. It really didn't smoke that bad and I ran it for about 10 minutes. But once I shut it down it wouldn't start back.
I guess it's toast. Oh well, it was just a $79 blower and lasted 3 years and I just inherited a Stihl BG86.
Posted on 6/26/19 at 4:56 pm to keakar
My Stihl has a screen that is attached to a bushing that screws into the muffler discharge. I had a ryobi that had a pack that was filled with a coarse steel wool packing. A two cycle that is too rich or otherwise incomplete combusting will foul the spark arrestor with oil/soot and stop airflow through the engine.
Posted on 6/27/19 at 4:36 pm to keakar
well here is a small add-on to my attempt to switch from corded electric weed eaters
=========================================================
i went cut grass and use the craftsman i thought i had running good, after about 30 minutes running it seems to overheat and lose power and stop running, then it wont restart. might have something to do with temps above 95 and heat index of 110 so it has a reason to be overheating i guess.
i did that last week and i thought i just flooded it but it did the same today as well. runs great for about 20 minutes then seems to rev a bit higher then normal the last 10 minutes then starts bogging down and running lower rpms then normal just before stopping like you hit the kill switch, then nothing. i let it sit for half hour and it still wouldnt start so i cut grass and then tried it and it still didnt start, then i went eat lunch and came back and it still wont start. i can still feel the compression pulse so its not completely gone but i bet its got low compression and near as i can tell its a pretty old model
at this point i think its shown me enough to make a few observations on gas trimmers, just like with outboard motors, its best to buy them new because anything sold used is either a lost cause or has a lot of wear and tear on it and not worth it.
i may just make sure the craftsman starts and runs after it fully cools off and then sell ity and the troy built as a package deal just the way i bought them.
if i can get anything close to my money back to break even i would be happy
at this point i think i need to consider buying something brand new and if gas trimmers are so temperamental to restart as i am getting the impression they are, then i think im just going to look at the cordless electrics so i have none of those issues to worry about
=========================================================
i went cut grass and use the craftsman i thought i had running good, after about 30 minutes running it seems to overheat and lose power and stop running, then it wont restart. might have something to do with temps above 95 and heat index of 110 so it has a reason to be overheating i guess.
i did that last week and i thought i just flooded it but it did the same today as well. runs great for about 20 minutes then seems to rev a bit higher then normal the last 10 minutes then starts bogging down and running lower rpms then normal just before stopping like you hit the kill switch, then nothing. i let it sit for half hour and it still wouldnt start so i cut grass and then tried it and it still didnt start, then i went eat lunch and came back and it still wont start. i can still feel the compression pulse so its not completely gone but i bet its got low compression and near as i can tell its a pretty old model
at this point i think its shown me enough to make a few observations on gas trimmers, just like with outboard motors, its best to buy them new because anything sold used is either a lost cause or has a lot of wear and tear on it and not worth it.
i may just make sure the craftsman starts and runs after it fully cools off and then sell ity and the troy built as a package deal just the way i bought them.
if i can get anything close to my money back to break even i would be happy
at this point i think i need to consider buying something brand new and if gas trimmers are so temperamental to restart as i am getting the impression they are, then i think im just going to look at the cordless electrics so i have none of those issues to worry about
Posted on 7/4/19 at 8:24 pm to keakar
FINAL UPDATE:
the compression tester came in today so i got to test the troy built trimmer with it
i took 3 separate readings with throttle wide open and i got 5 lbs, 4.5 lbs, and 5 lbs compression readings
i was shocked it was that low, figured to see at least 10-20 minimum since it still had some residual oil residue in it.
i know thats toast so there is no need to say it guys, i think 5 lbs vs a target range of 100-150 says it all
i pretty much figured as much since i couldnt feel any resistance from the rope
the craftsman trimmer i had runs good for about 20 minutes but when it gets hot it loses compression and the same thing happens to the homelite leaf blower i found on the side of the road with a bad carb so since both of those are old and worn out, i decided my experiment with gas yard tools comes to an end as far as i am concerned. gonna sell all 3 as package deal since 2 of them still run and try to get back the $70 i spent on trying to get them all running
i saw ryobi had a 4th of july sale with the 40v cordless string trimmer plus the cordless leaf blower as a package deal for $160 and i bought that to solve my needs and not have to worry about gas or carburetors again
the compression tester came in today so i got to test the troy built trimmer with it
i took 3 separate readings with throttle wide open and i got 5 lbs, 4.5 lbs, and 5 lbs compression readings
i was shocked it was that low, figured to see at least 10-20 minimum since it still had some residual oil residue in it.
i know thats toast so there is no need to say it guys, i think 5 lbs vs a target range of 100-150 says it all
i pretty much figured as much since i couldnt feel any resistance from the rope
the craftsman trimmer i had runs good for about 20 minutes but when it gets hot it loses compression and the same thing happens to the homelite leaf blower i found on the side of the road with a bad carb so since both of those are old and worn out, i decided my experiment with gas yard tools comes to an end as far as i am concerned. gonna sell all 3 as package deal since 2 of them still run and try to get back the $70 i spent on trying to get them all running
i saw ryobi had a 4th of july sale with the 40v cordless string trimmer plus the cordless leaf blower as a package deal for $160 and i bought that to solve my needs and not have to worry about gas or carburetors again
Posted on 7/4/19 at 9:57 pm to Cracker
quote:
Burnt ring
most likely, or they overheated and seized up in the piston ring grooves, it doesnt really matter though, since you cant buy the piston, cylinder, or the rings.
so even if you wanted to attempt a repair, you couldnt, and the cylinder walls had visible scoring as well
This post was edited on 7/4/19 at 9:59 pm
Posted on 7/4/19 at 10:49 pm to keakar
Usually the cause of overheating and loss of compression is wrong oil/fuel mixture, an air leak causing a lean condition, or a lean condition caused by a clogged carb/high speed jet.
Posted on 7/5/19 at 11:36 am to weadjust
yep, i just bought it cheap hoping it was easily fixable
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