Author Topic: Stihl 084  (Read 12464 times)

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Offline jmester

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Re: Stihl 084
« Reply #110 on: April 22, 2014, 02:02:37 pm »
It is oem for sure has the s embossed in the top.
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Offline Cut4fun .

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Re: Stihl 084
« Reply #111 on: April 22, 2014, 02:26:41 pm »
It is oem for sure has the s embossed in the top.

Here is what I go by. See the 2 (lost for words right now) above the rings on oem.  Afm dont have them.


Offline jmester

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Re: Stihl 084
« Reply #112 on: April 22, 2014, 02:38:18 pm »
Has mahle stamped on the skirt on the inside of the piston.
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Re: Stihl 084
« Reply #113 on: April 22, 2014, 03:02:32 pm »
Has mahle stamped on the skirt on the inside of the piston.

I never paid attention or over looked that in the past. I had 4 runners even at one time.  2 woods ported, 1 piped race ported, 1 stock.

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Re: Stihl 084
« Reply #114 on: April 22, 2014, 09:23:16 pm »
Do you think that I am close in my theory in a lean running condition that caused the ring to stick and and catch the exhaust port. Also can you pressure/vacuum test the crankcase with the piston out of the saw.
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Offline 660magnum

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Re: Stihl 084
« Reply #115 on: April 22, 2014, 09:33:26 pm »
Yes if you seal off the intake, exhaust, & the pressure relief valve.
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Re: Stihl 084
« Reply #116 on: April 22, 2014, 10:09:22 pm »
Thanks I was thinking you could. Just wanted to here from someone else before I wasted any time. If it leaks through the decomp then the decomp is bad.
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Offline 660magnum

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Re: Stihl 084
« Reply #117 on: April 22, 2014, 10:26:13 pm »
Yes, and a tight spark plug too.
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Re: Stihl 084
« Reply #118 on: April 23, 2014, 06:33:39 am »
Thanks 660. Cut my piston does have the 2 grooves above the top ring.
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Re: Stihl 084
« Reply #119 on: April 23, 2014, 08:55:56 am »
The decomp is leaking won't hold vac or pressure.  It is also leaking on the flywheel side where the generator would mount in the top threaded hole. If if where your guys saw would you put new seals, impulse, intake manifold on the saw or just leave it.
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