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2010 600HO etec, mag side no compression


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#1 EricM

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Posted 29 January 2020 - 02:18 PM

2010 600HO etec, mag side no compression

 

2 weeks ago stopped for lunch, went out to leave and battery was dead.  Battery had been fine until then.  No biggie, pull started it and started right up rode about 25 miles home.  Hassle to wrap around the clutch, but doable.  Next weekend, got a new battery, it started fine.  Took off on a ride and only made it 5 miles and slow at that, as it was a big group and one rider was a new rider.  Stopped at stop sign, engine died, had a hard time restarting, but it started, but was running on one cylinder.  Plugs are tough to reach, but we pulled them on trail, and one was fouled.  They where new a this fall, only have about 250miles on them as the snow has sucked here in lower Michigan this year. Dragged it back to the cabin, let is sit until Sunday morn, engine started up (still missing) and I drove in the barn. Did a compression test 140 on clutch side, 0 on mag side.  Engine has around 7500miles on it, so I guess it was due.  Just bought it this summer, so have no idea on history, but I only got around 250miles on it.  Thinking I got screwed, but it is what it is.  I got a good deal on it, or so I thought.  I have rebuilt ski-doo’s in the past 2006 800ptek, 2004 REV 600HO, 2002 600 ZX chassis, etc.  Only thing I am not sure on is the injector.  Why did it burn down?  Will a dead battery cause the injector to lean out?  I would have sure thought that the computer would have sensed a lean condition and gave me a heads up.  Looking for answers.  Bummed as we finally have snow, and now this. I know, you all have been thru it. 



#2 Mill

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Posted 29 January 2020 - 03:47 PM

2010 600HO etec, mag side no compression

2 weeks ago stopped for lunch, went out to leave and battery was dead. Battery had been fine until then. No biggie, pull started it and started right up rode about 25 miles home. Hassle to wrap around the clutch, but doable. Next weekend, got a new battery, it started fine. Took off on a ride and only made it 5 miles and slow at that, as it was a big group and one rider was a new rider. Stopped at stop sign, engine died, had a hard time restarting, but it started, but was running on one cylinder. Plugs are tough to reach, but we pulled them on trail, and one was fouled. They where new a this fall, only have about 250miles on them as the snow has sucked here in lower Michigan this year. Dragged it back to the cabin, let is sit until Sunday morn, engine started up (still missing) and I drove in the barn. Did a compression test 140 on clutch side, 0 on mag side. Engine has around 7500miles on it, so I guess it was due. Just bought it this summer, so have no idea on history, but I only got around 250miles on it. Thinking I got screwed, but it is what it is. I got a good deal on it, or so I thought. I have rebuilt ski-doo’s in the past 2006 800ptek, 2004 REV 600HO, 2002 600 ZX chassis, etc. Only thing I am not sure on is the injector. Why did it burn down? Will a dead battery cause the injector to lean out? I would have sure thought that the computer would have sensed a lean condition and gave me a heads up. Looking for answers. Bummed as we finally have snow, and now this. I know, you all have been thru it.

You could do a leak down test to see if your crank seals are good.

Then start to tear it down to inspect the damage.

Batteries die all the time. They wouldn't cause any issues or major burn down like that.

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#3 Justin33

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Posted 29 January 2020 - 03:50 PM

If you got 7500 miles on stock pistons im impressed, I’d say 5k max on pistons after that your on borrowed time, but I would pull the injector hook it up to a 9 volt battery and put the top part in some gas see if it sprays smooth if not you know it’s plugged, other than that a leak down test for crank seal leaks will be next step also when you pull the piston you will know more about what went on.

Edited by Justin33, 29 January 2020 - 03:52 PM.


#4 DareDog

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Posted 29 January 2020 - 06:23 PM

Had same thing here on ‘10. Stator went bad. Caused fuel pump to not put enough volts and leaned mag side out. Then it blew up, burned a hole in the exhaust side of the piston. . Other side had 150 psi. This was at 11k miles with everything original. 28 miles down trail it quit. Ran on one cylinder.


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Edited by DareDog, 29 January 2020 - 08:12 PM.

Current Fleet:
1998 Formula III 700-14,000 Miles
2004 600ho- 18,300 Miles
2005 500ss- 9,500 Miles
2010 600 HO Etec- 13,000 Miles

2016 600 HO Etec Blizzard-7,500 Miles 

2016 600 HO Etec Blizzard- 5,000 Miles

2017 600 Ace Blizzard - 1,350 Miles 

(2) 1975 245 RV 

1964 skidoo four cycle

1964 huski 


#5 LoClass

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Posted 30 January 2020 - 01:16 PM

Check the intake boots as well.  Last year I saw a rash of dead 600 Etec engines and the majority had delaminated intake boots.



#6 b.lee

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Posted 30 January 2020 - 01:22 PM

Check the intake boots as well.  Last year I saw a rash of dead 600 Etec engines and the majority had delaminated intake boots.

Ya I just did the boyesen rad valves on my 09 600 etec.

The boots were de-laminating


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#7 snowslammer

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Posted 30 January 2020 - 02:17 PM

Have injectors cleaned and flow tested. 



#8 EricM

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Posted 31 July 2020 - 12:44 PM

So I finally tore into it and found the issue.  The reed valve boot was torn, musta ran lean, melted down.  

 

Here is the Stator side piston.

 

wdeFqzrl.jpg

 

I got new parts, new crank, 2 new cylinders, new pistons, etc.  All from MCB performance.  Also got new Boysen Reed valves.  Should get lot's more miles after this.  Sled had almost 8k miles on it when she blew. 

 

How do I get the injectors cleaned and flow tested?



#9 MrGutz

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Posted 31 July 2020 - 01:35 PM

I've used this guy, seemed good.

https://www.fuelinjectorman.com/

 

I also lost a couple mag sides, with out a leak... 2009\2010 

ShortBlocked it once too.

Almost like the injector stops working, then works again... Mag side.

 

Also Shake the muffler, they come apart on the inside when this happens and will cause issues

Replace the Oil Check Valves\Squirters in the case too.

 

Used a Bearing Buddy for the PTO Side no issues... pumped it with Iso each season.

 

It seems like 8-9k is the life span.

Then 3-4

Oh well

GutZ


It's not what you do, It's how you do it.... It's not what you've got, It's how you use it.


#10 Daag44

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Posted 31 July 2020 - 01:40 PM

That's a classic detonation followed by pre-ignition failure.


Edited by Daag44, 01 August 2020 - 06:10 PM.


#11 DareDog

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Posted 01 August 2020 - 05:51 PM

X2 on fuel injector man.


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Current Fleet:
1998 Formula III 700-14,000 Miles
2004 600ho- 18,300 Miles
2005 500ss- 9,500 Miles
2010 600 HO Etec- 13,000 Miles

2016 600 HO Etec Blizzard-7,500 Miles 

2016 600 HO Etec Blizzard- 5,000 Miles

2017 600 Ace Blizzard - 1,350 Miles 

(2) 1975 245 RV 

1964 skidoo four cycle

1964 huski 


#12 DareDog

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Posted 01 August 2020 - 05:54 PM

So I finally tore into it and found the issue. The reed valve boot was torn, musta ran lean, melted down.

Here is the Stator side piston.

wdeFqzrl.jpg

I got new parts, new crank, 2 new cylinders, new pistons, etc. All from MCB performance. Also got new Boysen Reed valves. Should get lot's more miles after this. Sled had almost 8k miles on it when she blew.

How do I get the injectors cleaned and flow tested?

whats the stator look like? Had same hole in ‘10 600 etec here. Stator went bad. Not enough volts to power fuel pump. Leaned motor out and blew on that side. That was at 10600 miles. Rebuilt with MCB parts. 3k miles since then and still going strong.


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Current Fleet:
1998 Formula III 700-14,000 Miles
2004 600ho- 18,300 Miles
2005 500ss- 9,500 Miles
2010 600 HO Etec- 13,000 Miles

2016 600 HO Etec Blizzard-7,500 Miles 

2016 600 HO Etec Blizzard- 5,000 Miles

2017 600 Ace Blizzard - 1,350 Miles 

(2) 1975 245 RV 

1964 skidoo four cycle

1964 huski 


#13 suvy800

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Posted 03 August 2020 - 11:20 AM

I've used this guy, seemed good.
https://www.fuelinjectorman.com/

I also lost a couple mag sides, with out a leak... 2009\2010
ShortBlocked it once too.
Almost like the injector stops working, then works again... Mag side.

Also Shake the muffler, they come apart on the inside when this happens and will cause issues
Replace the Oil Check Valves\Squirters in the case too.

Used a Bearing Buddy for the PTO Side no issues... pumped it with Iso each season.

It seems like 8-9k is the life span.
Then 3-4
Oh well
GutZ

Where do you install the bearing buddy?

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#14 MrGutz

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Posted 04 August 2020 - 10:25 PM

http://www.winnersci...atured_prod.php

 

Shows Mag Buddy too.

I ran both on an 800r and they worked good.

 

I think I have one in the Shed, I'll look.

But it looks like this.

GutZ


It's not what you do, It's how you do it.... It's not what you've got, It's how you use it.


#15 EricM

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Posted 05 August 2020 - 06:35 AM

I finally got the cases split.  PTO bearing has no grease.  It seems likely this was the failure mode, seal failed, grease got sucked into the engine, ran lean, burned piston.  What do you guys think?

 

xgZOu6x.jpgnqD8vY2.jpg

 

 

 

Here is the Other side for comparison.

 

VWwEpRC.jpg

 

 

yraZ4Mu.jpg


Edited by EricM, 05 August 2020 - 06:37 AM.





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