2015 SVL90-2 Loud Hissing from Engine Compartment while running

Chieftan

New member

Equipment
SVL90-2
Mar 22, 2024
6
1
3
Missouri
Hi All - Any insight would be appreciated. Checked around the forum but does not appear to be anything related to my issue.

Here is the background, operating the unit, reduced power noticed, then regen kicked in (I think this is just coincidental), but within 5 mins , hissing started, the machine threw an E9310 and stalled. Noticed bluish soot on the inside of exhaust pipe.

Let the engine cool. Started it fine, no codes, but the hissing is still there. Let it run at low idle, regen started again, this time left it alone and it completed within 25 minutes. All with the hissing still going on. No unusual or white smoke out of exhaust during this process , no error codes.

After Regen completed, still hissing, throttled up and immediately saw abnormal smoke out of exhaust. Shut it down.

I'm starting to check hoses/connections for this hissing which seems to be coming from the rear left side, hard to tell as it is so loud when operating, between engine noise , the hissing is as loud if not louder than the engine.

Coolant lines are fine - any thoughts about exhaust or turbo leaks - checking on those hoses/connections next.....

Thoughts?
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
33,399
8,706
113
Sandpoint, ID
Take a video/audio of it doing it and post it on youtube and give us a link to see/hear it.
 

Chieftan

New member

Equipment
SVL90-2
Mar 22, 2024
6
1
3
Missouri
Here are two videos, one at min throttle and the other at max throttle. Both close in on the area that the hissing is most prevalent and where it appears to originate.

Links updated:



I can operate the unit, tracks and loader, but it is clearly under powered , and has trouble climbing even a slight incline.
 
Last edited:

whitetiger

Moderator
Staff member

Equipment
Kubota tech..BX2370, RCK60, B7100HST, RTV900 w plow, Ford 1100 FWA
Nov 20, 2011
3,181
1,601
113
Kansas City, KS
Check the intake manifold where the AC bracket bolts onto it. You may have a broken manifold.
 
  • Like
Reactions: 1 user

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
6,375
2,027
113
Austin, Texas
I can’t see the videos, they are “private”
 

Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
6,375
2,027
113
Austin, Texas
I would look at any canister on the exhaust side of the emissions system. It seems that something may have been clogged and possibly split. It could be a partially disconnected hose.

Odd that you are not getting error codes though but maybe the sensors are happy for now.

Does it have any turbo charging system?
 

Mitjam

Well-known member

Equipment
M-108, M6-111, Lx3520, Rtv-520 and LandPride implements
Jan 14, 2013
348
420
63
Edmonton, Alberta, Canada
Hi All - Any insight would be appreciated. Checked around the forum but does not appear to be anything related to my issue.

Here is the background, operating the unit, reduced power noticed, then regen kicked in (I think this is just coincidental), but within 5 mins , hissing started, the machine threw an E9310 and stalled. Noticed bluish soot on the inside of exhaust pipe.

Let the engine cool. Started it fine, no codes, but the hissing is still there. Let it run at low idle, regen started again, this time left it alone and it completed within 25 minutes. All with the hissing still going on. No unusual or white smoke out of exhaust during this process , no error codes.

After Regen completed, still hissing, throttled up and immediately saw abnormal smoke out of exhaust. Shut it down.

I'm starting to check hoses/connections for this hissing which seems to be coming from the rear left side, hard to tell as it is so loud when operating, between engine noise , the hissing is as loud if not louder than the engine.

Coolant lines are fine - any thoughts about exhaust or turbo leaks - checking on those hoses/connections next.....

Thoughts?
Prob a long shot but have you checked your intercooler and hose and clamps from turbo and back to intake. Hissing could be charged air leaking and throwing a code and causing loss in horsepower
 

whitetiger

Moderator
Staff member

Equipment
Kubota tech..BX2370, RCK60, B7100HST, RTV900 w plow, Ford 1100 FWA
Nov 20, 2011
3,181
1,601
113
Kansas City, KS
Prob a long shot but have you checked your intercooler and hose and clamps from turbo and back to intake. Hissing could be charged air leaking and throwing a code and causing loss in horsepower
The SVL90-2 does not have an intercooler.