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Anyone an expert on the 600SDI engines?


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#76 Daag44

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Posted 03 April 2019 - 05:04 PM

I’ve not consented to anything else st this point. What I posted it a copy/paste of the text exchange from today.

Does that piston and ring damage look like anything caused by the ECU or voltage regulator??

 

No that I can see. For whatever reason the ring broke and the pieces pounded the piston. I assume the ring locator pin worked itself loose. Make sure to bring all of the broken parts to Codooster.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R Turbo?
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Diagnoses
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Engine Management
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Pictures - How to resize and upload to DooTalk
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Oil versus Fuel consumption
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#77 Daag44

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Posted 03 April 2019 - 05:49 PM

This is good news. If this has the abilities you suggest, I'll probably buy one even just for the 2020s.

 

I'm still trying to figure out how the ECU or regulator caused the ring/land to break. If anything, that piston looks like it was running a wee bit rich. Also, if it fires on both but then drops one cylinder, could this be some sort of "limp mode" that's still thinking the PTO side isn't right?? Is there a code that needs cleared before it continues to run on both holes?? Does the SDI even do this?? Like shut down the offending cylinder because the sensors aren't sensing proper combustion so the ECU shuts down the offending cylinder?? Does that make sense?

 

For the firing on one cylinder, the only way to know is with an Ignition Timing Light. A spark tester can also be used, but it has its limits as it doesn't show timing. Without the use of an Ignition Timing Light I consider the diagnoses a guess at best.

 

For shutting down the offending cylinder, no. A protection mode of any kind will affect both cylinders equally. There is no way to know why in this instance only one cylinder is being affected without proper troubleshooting. Anything else is a guess. First thing is to connect to BUDS/CanDoo and reset the TPS.

 

I apologize to being direct. At this point I am finding myself in a situation I shouldn't be in, which is commenting on a sled that is currently being worked on by another tech. In my opinion it is poor etiquette on my part. I much prefer giving my thoughts on a sled that is being worked on by the owner.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R Turbo?
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Diagnoses
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Engine Management
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Pictures - How to resize and upload to DooTalk
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Oil versus Fuel consumption
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#78 Killer-Beez

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Posted 03 April 2019 - 06:22 PM

Has the tech had any luck resetting the TPS? Has he checked the wiring harness for the ECM? I'd be asking those questions before spending money on a ECM that you may not need

#79 Gordo427

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Posted 03 April 2019 - 06:50 PM

Voltage regulator would not do that to your sled. I honestly have never seen a ecm do that. The timing is set by the key way had one fall out on a rebuild once just ran all funky. I have used a quality spark tester and as long as the spark is bright plus you can compare color of spark to each cylinder

#80 Expeditionxu

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Posted 03 April 2019 - 06:58 PM

I apologize to being direct. At this point I am finding myself in a situation I shouldn't be in, which is commenting on a sled that is currently being worked on by another tech. In my opinion it is poor etiquette on my part. I much prefer giving my thoughts on a sled that is being worked on by the owner.

Reasonable for sure.

I think the tech in question is being judged prematurely . Cheers

#81 Gordo427

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Posted 03 April 2019 - 07:00 PM

Voltage regulator would not do that to your sled. I honestly have never seen a ecm do that. The timing is set by the key way had one fall out on a rebuild once just ran all funky. I have used a quality spark tester and as long as the spark is bright plus you can compare color of spark to each cylinder

999128a246ba00432392ab70b9d56ad6.jpg
This is my jet ski and if you move left or right with screws go through yes that changes timing



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#82 Gordo427

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Posted 03 April 2019 - 07:02 PM

On sdi if I am correct timing is done ecm

#83 Expeditionxu

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Posted 03 April 2019 - 07:27 PM

I thought it uses the key way/ pickup as a crank position sensor and adjusts from there.

#84 Daag44

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Posted 03 April 2019 - 07:48 PM

Gordo427, with you we are three who believe the same. Add Killer-Beez as a fourth if that's what he was alluding to.

 

FYI the OP is in a complicated situation with expensive parts on order (ECM & VRR) that he didn't give the approval. So he will start by sorting this out with his dealer in private where it belongs.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R Turbo?
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Diagnoses
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Engine Management
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Pictures - How to resize and upload to DooTalk
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Oil versus Fuel consumption
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#85 Killer-Beez

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Posted 03 April 2019 - 07:51 PM

Sorry folks, based on the info provided up to this point, it appears either the tech/dealership has very little experience with an SDI, or they don't have the proper test equipment, IE buds software.

They order sensors, now an ECM, it looks like their throwing spaghetti at a wall hoping something sticks good enough to make it idle.
I maintain its a TPS issue, or a damaged harness connector. Or a wiring harness issue. What ever is causing the idle problem was not present prior to the engine going down, and had nothing to do with the ring breaking and beating the top of the piston up.
My opinion is the problem is a product of engine removal and reinstallation.

#86 Daag44

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Posted 03 April 2019 - 07:56 PM

I thought it uses the key way/ pickup as a crank position sensor and adjusts from there.

 

Exactly and you are both right. The timing mark on the magneto flywheel is indeed set by the keyway in relation to the position of missing trigger teeth.

 

To allow for a tolerance in the position of the keyway, the SDI has a timing offset that can be adjusted in the ECM. It requires an Ignition Timing Light to set correctly.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R Turbo?
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Diagnoses
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Engine Management
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Pictures - How to resize and upload to DooTalk
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Oil versus Fuel consumption
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#87 FlavorDave

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Posted 03 April 2019 - 08:47 PM

For the firing on one cylinder, the only way to know is with an Ignition Timing Light. A spark tester can also be used, but it has its limits as it doesn't show timing. Without the use of an Ignition Timing Light I consider the diagnoses a guess at best.

For shutting down the offending cylinder, no. A protection mode of any kind will affect both cylinders equally. There is no way to know why in this instance only one cylinder is being affected without proper troubleshooting. Anything else is a guess. First thing is to connect to BUDS/CanDoo and reset the TPS.

I apologize to being direct. At this point I am finding myself in a situation I shouldn't be in, which is commenting on a sled that is currently being worked on by another tech. In my opinion it is poor etiquette on my part. I much prefer giving my thoughts on a sled that is being worked on by the owner.


I completely understand. I also really appreciate the phone call this afternoon. I think we’re on the right track to deal with the situation without ruffling too many feathers.

Harbor Freight is my Sponsor. 


#88 Gordo427

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Posted 03 April 2019 - 09:19 PM

Curious why would you change the factory timing when would you use the offset. I have two sdi one going strong still over 10000 miles my son rides and doesn’t baby it also have my wife’s sdi had over 10 last year blew up because of stud through heat exchanger put 2000 mikes on it this year complete rebuild mcb pistons big worm did my oil pump new crank has engine completely out cleaned injectors never had issue sorry for the rant

Edited by Gordo427, 03 April 2019 - 09:19 PM.


#89 Daag44

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Posted 04 April 2019 - 01:01 AM

Curious why would you change the factory timing when would you use the offset. I have two sdi one going strong still over 10000 miles my son rides and doesn’t baby it also have my wife’s sdi had over 10 last year blew up because of stud through heat exchanger put 2000 mikes on it this year complete rebuild mcb pistons big worm did my oil pump new crank has engine completely out cleaned injectors never had issue sorry for the rant

 

Like you I don't think it really matters unless the magneto flywheel is off by a couple degrees. Within 1 degree I don't worry about it. But I do measure it to be sure the timing isn't in the left field. Assuming you are using the same magneto flywheel for a bottom end rebuild, if the engine survived x number of miles on the same flywheel and default offset of -0.8 , then it should keep working with the same setup.

 

But let's say you buy a rebuilt crank that the shop had to use a new batch of mag side crank pieces. Was the keyway slot cut in the shaft a few degrees off? If it were 3 degrees in advance then this would also mean a much higher risk in detonation. I haven't yet found one that was a concern, but I measure the ignition timing to be sure.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R Turbo?
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Diagnoses
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Engine Management
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Pictures - How to resize and upload to DooTalk
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Oil versus Fuel consumption
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#90 Daag44

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Posted 04 April 2019 - 02:12 AM

I completely understand. I also really appreciate the phone call this afternoon. I think we’re on the right track to deal with the situation without ruffling too many feathers.

 
That is indeed the most important part. You are already into this for $3,200 for an OEM shortblock with labor. Add $400 to install a new Air Pressure Sensor and eRAVE solenoid. Then add $1,300 for a new ECM and VRR. We are now looking at a minimum of $4,500 for what began as a shortblock replacement.

 

Since the sled went into the shop at the beginning of the Feb, it has spend half the season in the shop. Just find a way to say your are sorry but this is growing far beyond the budget and the agreed cost of $3,200. And the season is over. This way you can cut the cord and leave on good terms.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R Turbo?
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Diagnoses
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Engine Management
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Pictures - How to resize and upload to DooTalk
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Oil versus Fuel consumption
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix





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