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Low compression on my new Stihl MS362

Discussion in 'Chainsaw' started by James Sawyer, Mar 21, 2019.

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  1. X 66 Stang347 X

    X 66 Stang347 X ArboristSite Operative

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    Your right. And if their good, their busy. He should be towards the top of their priority. I would give them a call early Friday and just asked what they found. Then they’ll still have a chance to call Stihl Friday if they haven’t already.

    Shouldn’t take more than a hour to find out the problem. Don’t take but 20 to pull the jug.
     
  2. James Sawyer

    James Sawyer ArboristSite Operative

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    Bad new...The second shop says they aren't going to do anything about my saw. they ran my saw almost .4 hours so the hour meter is just about to switch to .8 hours total time on the saw. Here's what they said and found. They ran a cold compression test in fact 4 different tests. The saw measures consistently 110 psi hot and 120psi cold. They ran the a cold test as soon as they could look at it, on 1st chance they could take it out and run it on their test log...the saw runs and idle good, rev etc normal unloaded. (By the way they really liked the tach idea because they can get real time measurement on the saw. They did some comparisons to three different tach they use to tune their saws...they said its spot on). On their 1st cuts they found the same thing I found, the saw didn't have any power if they loaded the saw the chain would stop. Took it back into the shop, ran a 2nd compression test and checked the fuel. Which they didn't like the fuel, said it smelled bad. They said on 1st cut test if they just let the saw run and let it do the work , it ran in the 7k range and it should run about 9.6k. They dumped the fuel and ran a 2nd cut test making sure the saw ran out any of the old fuel. Same thing, if they loaded the saw the chain would stop, but now the saw if you let it do the work ran at 9.6K range. At that point they ran the saw some more and did two more compression test they weren't clear on this. They said something about contacting Stihl but it wasn't clear they talked to some one or not. They said the new MS362 when thru a design change and it now runs a smaller plug then the normal BPMR7A 10mm plug and went to a newer 6mm plug. The new 362 design with the 6mm plugs aren't high torque saws they are high RPM saw now... so they aren't comparable to the old saws you have let the saw do the work. So...what's the point of having a dwg on the darn thing? Boy you get into a tree that leaning and you got it get it cut off to the hinge...you load the saw to much and it stops the chain like I found that's not good. You get the slightest pinch on the chain its going stop, its not going have any torque in a cut. All the second shop said is you got let the saw do the work it not comparable to the old high torque saws. I said something about trading the saw off, no comment on that but I really need to run 3 to 5 tanks of fuel thru it and let the saw do the work it not the same saw as the old high torque saw. We talked about my expectation on this ms362 and I said it should run better than my AV034 with a longer bar, I bought this as replacement for my AV034 and it should run at least the same if not better. He really didn't say much other than the saw was spec better then the AV034 and but its a different design and they run different. Anyone want a good deal on new MS362 with .8 hours on it...good lookin saw too. Sound like I'm stuck and out $1000. The did say the new MS462 is heck of saw, will out cut my 460 run unbelievable at 13lbs he got chance to run one and cut with one. Boy, that out make me feel good, buy new saw and it's piece and they got a much better saw that actual works at .7 lbs more. I'm just sick about this whole mess. So... does anyone have a suggestion, because I sure like to hear it. I think for now I'm going run a comparison with my 034 same bar same chain 20" see what I think, I honestly haven't run this saw enough but I've ran saw enough that my option is this new design is junk.
     
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  3. X 66 Stang347 X

    X 66 Stang347 X ArboristSite Operative

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    You have a couple options far as I can see. If the compression is in fact 110–120 then somethings wrong. Keep it and run it til it most likely fails from the problem.

    Or get your money back at the original dealer. Yes you have that option. But when pressed about that and they know your serious they’ll want to upgrade you to the 462. They can call stihl and they’ll give them the authorization if they want. and then they can see how to handle the saw.
     
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  4. dmb2613

    dmb2613 ArboristSite Guru

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    Call Stihl if the shop you bought it from want take care of things
     
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  5. kyle.kipple

    kyle.kipple ArboristSite Guru

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    I called my dealer and ran your scenario by him. He said from his experience (30+ yrs) that 110 is too low for a new saw even though it hasn’t broke in. He didn’t have one there to check or any documents to back him up. He said call stihl. I’d also spend the 2 minutes and pull the muffler.


    Sent from my iPhone using Tapatalk
     
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  6. X 66 Stang347 X

    X 66 Stang347 X ArboristSite Operative

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    Exactly what he said.
    I’ve never had stihl not help on a legitimate reason.
    Like the 391 I posted about earlier. I and the customer knew For sure they were going to say no. They sent another top end to fix it and he bought a 461 anyway.
     
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  7. Cope1024

    Cope1024 Stihl Crazy

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    I agree. The saw won't develop it's full potential for 4-5 tanks of fuel, but my 2015 sample had plenty power out of the box.
     
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  8. Tobystihl

    Tobystihl Creaky Limb Tree Care

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    There are tight tolerances between piston and rings on the ms362, it may just be tight rings that free up with some time on the logs!
    If stihl are not going to help you, you have nothing to lose by cracking on and using it as a previous post mentioned it's under warranty, so worse case scenario, it blows up, you can just take it back and let stihl deal with it!
     
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  9. lone wolf

    lone wolf MS 200T King

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    Im still waiting for you to pull the muffler the hell with the idiot liars!:popcorn2:
     
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  10. dmb2613

    dmb2613 ArboristSite Guru

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    I work at a Stihl Dealer, no way in hell would we let a saw leave like that. It is buggered up may have broke or no rings on the piston, A new Stihl will run without rings on the piston.
     
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  11. lone wolf

    lone wolf MS 200T King

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    Wat kind of compression with no rings? And that dealer is a real azzhole ain't he?
     
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  12. dmb2613

    dmb2613 ArboristSite Guru

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    I never checked to see I was so amazed that it would crank and run like that, I guess it was 20 years ago they did it at Stihl school
    I would guess around 100 lbs , but just a guess
     
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  13. lone wolf

    lone wolf MS 200T King

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    Stihl should be notified of this thread!
     
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  14. lone wolf

    lone wolf MS 200T King

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    I seen a dirt bike run on 60 but you had to push start the hell out of it.
     
  15. SEAM

    SEAM Addicted to ArboristSite

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    Send a video of the compression measurement result and lack in cutting performance to the Stihl customer service? Or at least ask if they might be interested in watching such a video?
    Looks like the dealers in the area want to avoid dealing with the Stihl claims department themselves. With dealers like that no wonder everyone is buying online these days.
     
  16. James Sawyer

    James Sawyer ArboristSite Operative

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    Well the cylinder looks good, ran a camera inside for Lone Wolf. Guess I should have put 90 degree mirror on to see the intake. I didn't want to pull the muffler just yet.
     

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  17. James Sawyer

    James Sawyer ArboristSite Operative

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    Thanks for doing that
     
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  18. James Sawyer

    James Sawyer ArboristSite Operative

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    I thought about that writing Stihl. I'm going to run it see how it compares to the 034 same bar. That'll tell me lot.
     
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  19. James Sawyer

    James Sawyer ArboristSite Operative

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    I think I'm going see how it runs myself a bit more and if it's not up to what I want I'm going try and take it back...not sure I want another Stilh if the warranty no good. But I'm thinking I want my money back seriously. I pretty much liked Stihl I have 3 Stilh plus this one. But I ran my husky 353 the other day clearing some road blocks and it runs pretty good...maybe that's the future for me if I can't get any support or Stihl warranty is any good. I actually haven't contacted Stihl myself so I can't say their warranty isn't any good. But 2 of the 3 dealer in the area are both saying that just how this design is suppose to run. If you ask me falling with this saw is dangerous. I won't get chance to run this saw until next week. I need pick up some fuel save the receipt so that can blame me for running bad fuel. But I'm seriously not happy in good conscience I can't sell the saw, but I can trade it in worse case I guess argue the shops point that the saw is fine but not for me it's not. Thanks guys for all the support lot of you have gone out of your way to help
     
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  20. Colt Marlington

    Colt Marlington ArboristSite Guru

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    Does it look like there's a big gap between the piston and cylinder, in the top picture, right between the two ports?

    Course ya still can't see if it's got any rings on it.
     
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