This guys mechanical knowledge on engines is unreal. I just applied for ThinkBig program with Finning in Canada. I hope to have a quarter of your knowledge and skills someday if I get this job.
My old man was, in my biased opinion, one of the greatest mechanics ever. When everyone else was done work and gone for a beer he was reading his service manual either out of curiosity or checking to see what he had in store for tomorrow’s project. Anyway, long story short, the extra by the book steps you take I appreciate immensely and are probably the biggest reason I watch your channel. As a side note I’d love it if you would come and overhaul my c-15 restoration/transformation to a c-18. 😅
Hey Josh. I needed a C-18 ring compressor last year for an overhaul I was doing. I bought a cheap C-15 compressor and had my local machine shop open it up to fit the C-18 rings. Works like a charm and costs less than half of a typical C-18 ring compressor.
As a truck mechanic it's great to see professional work I see bad workmanship everyday by ignorant people . Your work is like a breath of fresh air 👍🇺🇲🇬🇧
As a father of 5 children I can honestly say I know your mom (parents) are so proud of you! I had a great time watching tear down and put this engine back together & get it started!!! ✌🏽🙏
I'm really glad that when you waited until the last 2 minutes to do the "Destruction" segment, that it wasn't the C18! This was a great project to follow along with you on..
Torquing It's like a lot of things, you can get away with doing it wrong 1000's of times, or you can have it go bad on the tenth time. Just because your uncle Billy did it by feel for 30 years and didn't have an issue does not mean you won't.
Oh so 6 ugga duggas isn’t the spec ? lol I hate guys who don’t take the 3 minutes at the start of the job to print out the specs and actually use them.
Except in this video it was NOT done correctly. Not supposed to have all the bolts backed out and crank down on one with the torque wrench. The correct way is to snug all of them up and then torque in steps with the first step being on the low end. Can't believe that no one else picked up on this or commented on it.
They definitely hired the right engine builder\mechanic for the job, helluva job, nothing more satisfying than seeing freshly built out of frame engine, ziptied wires look really neat, awesome work, an great series of videos on this job\project, thanks for sharing
I try and replace all the self locking bolts in the gear train and all the bolts behind the flywheel. Replace the bearings/bushings in the front gears, if they have high miles or hours on them. 92U engines used the ring on the exhaust. Had an adapter that connected to the exhaust flange. The ring would get stuck over time and leak exhaust. You had to get a torch and heat the ring up. Then chisel it out of the sleeve. Once you got the ring out, you take the new ring and place it in backwards. Walk it all the way around the sleeve making sure it would fit. If you came to a hard spot, take a file and open that area up.
I have a shop cat that I rescued from starvation. He appreciates it so much that he will throw a dead mouse at my feet from time to time and I give him a treat for his actions. I was never a cat person but a man needs to be careful about not showing compassion when it’s in his power to do so.
@@prevost8686 I can understand people who have never learned what a relationship with a cat can be, they aren't all the same, but the ones who say things like it isn't manly or they hate cats for no reason, just baffle me. That is great you saved that cat and they can be easier to take care of than dogs and still make great companions. My cats and dogs take turns, or at the same time, coming into my home shop to see what I am up to, even though they also stay in the house with me. My grandfather feeds the neighbor's cat and little dogs since they both fit through the iron fence, so he gets some interaction without having to commit to caring for another pet at his age, after his dog passed a while back.
Worked at Anchorage Intl airport, we had some of those in Osh Kosh snowblowers that only powerd the blower section the chassis had a c15. What a fun machine to operate! The c18 were straight piped and when the load came on they were singing a song! Always thought that engine would be cool in a truck.
I was wondering if we'd get to hear it run, you did not disappoint. Now 41 years in the trucking business and had not until now seen nor heard a C18 run. I'll look for the spec's on this engine here in few minutes but imagining this engine in a truck frame, with 18 speed, 4.44 rears on tall 24.5" rubber, it could move a mountain - the Rockie Mts that is. The two pieces between turbo's is also used on the Cummins X-15 (just a single tube) between the exhaust manifold and EGR cooler which on my Kenworth T-880 failed (become loose). Every time the regen cycle came on, exhaust fumes seeped past the ring and fed carbon monoxide fumes under the hood and into the cab which made me very sick. It took the shop two weeks to repair the damage and make good again. Still don't know how or why it failed on a truck less than 3 years old. Loved watching this video, you make it seem so easy.
Im not involved in the heavy duty equipment industry at all. I used to run bush equipment and/or drove logging semi trucks in the past. I just like Cat engines and think yer work is high degree of competency and enjoyable to watch. Id never go back to punching a clock, fak dat chit.
A very good and informative little series . Interesting to see the job done as it should be and not on a cheap budget just to get it running again till next time . Not the everyday type of engine repair I normally watch however I thoughourly enjoyed it many thanks
Aussie Electrician here. Love the videos, Josh. I wanted to be a diesel mechanic or electrician when I left school. Scored an Electrician Apprenticeship and completed that. Still love big diesels. Working in the coal mines a fair bit, I still get my diesel fix there and your channel.
Yeah they didnt check the backlash after my 2 million rebuild on a 95 5ek and my engine was whining when warm. They said and made me replace the air compressor. Didnt work, they said it was done and i was listening to ambient noise. I bought a stetoscope and yup it was the adjusting gear whining. Fixed it before it blew up the front. Mostly it was driving me nuts.
Happy to hear you mention the self employed business owner. I own my own business and have for almost 20 years. No paid holidays, no paid insurance, etc. It has its advantages, but it’s not for everyone for sure. Discipline is a must.
Headed to a 3412E in a horizontal grinding mill. Over 20,000 Hours grinding railroad ties on that unit. Josh, I'd agree, there are a number of places that I trust my "calibrated arm" or just an impact, but the powertrain and drivetrain aren't on that list. I keep my torque wrenches certified, and use them on every engine.
For the crane you could put different pins in at the bottoms of those struts so you could put a piece of pipe across and secure it with cross pins. That’d give you something to pull on and keep the frame of it aligned.
Had like 5 or 6 C13s break the bolts for the cam retainer plate. The bolts will have their heads break which will fall through the timing gears and some times break a bunch of gear teeth. I think it's from rust building up between the block and the front gear cover putting weird stresses on the 4 cam bolts. Just my theory. Pretty crappy job too because the cam gear is pressed onto the cam. So you need to pull the cam all the way out to get the full front cover off
Get a proper respirator mask with the charcoal filters for painting, they will let you breathe without getting all the fumes. Those jock cup dust masks will just save you from blowing Cat yellow boogers later.
Enjoy your evening with all your family around you,Adept Ape 👍 WISE,Adept Ape Adept Ape,take care From Nick Ayivor from London England UK 🇬🇧 ⏰️ 22:36pm Good Evening
I’ve always wondered why Cat incorporated spacer plates, shims, etc in between the head and block on some engines. I’d love to hear it from a Cat engineer but I won’t hold my breath. My only guess would be that they found that certain designs were having unacceptable “gasket scrubbing “ between the head and block and using plate/shim designs alleviated the issue.That’s just a guess though.
Didn't eliminate the wear issue completely versus non-spacer engines' earlier manufactured engines. Cummins uses liners with press fit upper flange and still have liner ledge wear problems.
I remember when the coolant ferals had a copper squash collar instead of the plastic centers. When ever I had a front structure off, I would put silicone sealant on the two half inch studs for the fan drive. I've had too many 3400 series engines leak oil around those studs.
Cat spray paint part numbers for those who are curious. Standard performance topcoat yellow 590-0196 Standard performance primer yellow 458-9582 Hi temperature topcoat black 458-9583 Standard performance topcoat high gloss black 458-9586
On your point about painting and headaches, i found if you arent using a filter respirator, make sure the mask has a carbon layer. I had a job where i was rolling CARC paint on stencils, its real harsh stuff. Working around a container and other guys i could paint all 6 number stencils in like 2 hours and never had a headache with a dust mask that had a carbon layer, it might have been a N95, but this was 2018/2019 so i dont remember anymore
15:54 That is a dial indicator, a depth micrometer is a different tool. I know this has been noted before. Do not want Josh to get into trouble with the machinists out there.
@@mmm365He should have also capitalized the first letter. Just saying. Grammar police are much like real police. They’ll pass you doing 95, go a few miles, then do a u turn behind a bush to pop you for 5 over….
Block plus plate on the bottom plus a 2 piece oil pan and a 8 piece gasket, what could possibly go wrong? Been there and did that on a 988H, it didn't leak😀I primarly do transmissions, engines are far to complicated for this old bloke. I did my time on 3306, early 3406/8 and D343's, 40 years ago.
I hope if you ever get a customer that wants to do it on the cheap you tell them to bugger off. I've learnt the hard way and when it all goes to shit guess who gets the blame
You may want to try the 3M 6002 masks. They come with different filters (i believe) I have some that filter VOCs , like solvents in paint. Be prepared to smell nothing even in the most smelliest areas :D
Mom should be worried about the fact that someone thought you needed a little kitty in this video! Ha ha i couldn't resist! Great work your doing my brother! Love northern I da ho! Here happens to be a novel idea, get yourself an actual respirator that fits correctly and don't use a dust mask when painting!
I wonder what powder shop the valve covers are at. If they were brought to us at precision powder and blast in rathdrum, they would have only taken ten days tops. And we have cat yellow powder in stock too. I wish you would have shown hooking the injector wires up. Would love to see that little 9/32 nut driver in use!!!
Also, I’ll bet you a steak that if you put a blanket on one of those cheap rolling tool trays that your four-wheel drive shop supervisor would happily hang out with you until she gets hungry again.
Hey Josh, congrats on finishing the rebuild, looks and sounds great. I’ve had one question for you since you did your video on your stint in electrical power generation. Why did you choose to get out of it and go to trucks? I work in EPG myself and feel so spoiled by the ease of working on a generator, can’t see why anybody would do anything else lol. Hope to see you work on a genset now that you’re out on your own!
Good afternoon. First and foremost thank you for sharing your knowledge over the years I definitely appreciate you. I have a question on my 04 w900 c-15. I recently changed out my boost sensor and I have started to notice smoke while my engine break is engaged but I do not notice any smoke any other time. I recently did a head job on it I would say 10-15 thousand miles ago. No coolent loss and the oil looks good I just put new fuel filter, air filters, and have changed all the fluids. Any ideas?
Loved this whole project. It looks like the owners were not too cheap to do it right, and imo lucky to have hired you.
Same thought, but it’s cheaper to do it right the first time than doing it twice
This guys mechanical knowledge on engines is unreal. I just applied for ThinkBig program with Finning in Canada. I hope to have a quarter of your knowledge and skills someday if I get this job.
My old man was, in my biased opinion, one of the greatest mechanics ever. When everyone else was done work and gone for a beer he was reading his service manual either out of curiosity or checking to see what he had in store for tomorrow’s project.
Anyway, long story short, the extra by the book steps you take I appreciate immensely and are probably the biggest reason I watch your channel.
As a side note I’d love it if you would come and overhaul my c-15 restoration/transformation to a c-18. 😅
Hey Josh. I needed a C-18 ring compressor last year for an overhaul I was doing. I bought a cheap C-15 compressor and had my local machine shop open it up to fit the C-18 rings. Works like a charm and costs less than half of a typical C-18 ring compressor.
As a truck mechanic it's great to see professional work I see bad workmanship everyday by ignorant people .
Your work is like a breath of fresh air 👍🇺🇲🇬🇧
Professional except for the torquing of the cam gear. Proper way to torque is to snug all the bolts up first, then torque in steps.
As a father of 5 children I can honestly say I know your mom (parents) are so proud of you! I had a great time watching tear down and put this engine back together & get it started!!!
✌🏽🙏
I'm really glad that when you waited until the last 2 minutes to do the "Destruction" segment, that it wasn't the C18! This was a great project to follow along with you on..
Glad you liked it, it was definitely the largest one since leaving Cat and a little different than a truck for sure.
Torquing It's like a lot of things, you can get away with doing it wrong 1000's of times, or you can have it go bad on the tenth time. Just because your uncle Billy did it by feel for 30 years and didn't have an issue does not mean you won't.
Oh so 6 ugga duggas isn’t the spec ? lol I hate guys who don’t take the 3 minutes at the start of the job to print out the specs and actually use them.
Except in this video it was NOT done correctly. Not supposed to have all the bolts backed out and crank down on one with the torque wrench. The correct way is to snug all of them up and then torque in steps with the first step being on the low end. Can't believe that no one else picked up on this or commented on it.
They definitely hired the right engine builder\mechanic for the job, helluva job, nothing more satisfying than seeing freshly built out of frame engine, ziptied wires look really neat, awesome work, an great series of videos on this job\project, thanks for sharing
Thanks Derrick.
@@AdeptApehey can that c18 be dropped into a Peterbilt ?
I try and replace all the self locking bolts in the gear train and all the bolts behind the flywheel. Replace the bearings/bushings in the front gears, if they have high miles or hours on them. 92U engines used the ring on the exhaust. Had an adapter that connected to the exhaust flange. The ring would get stuck over time and leak exhaust. You had to get a torch and heat the ring up. Then chisel it out of the sleeve. Once you got the ring out, you take the new ring and place it in backwards. Walk it all the way around the sleeve making sure it would fit. If you came to a hard spot, take a file and open that area up.
The rebuilt engine sounds great .nice job you have done there 👍👍👍👍
Would love to see a collaboration between AdeptApe and KT3406E.
Looks like you've made a new friend. Working on a CAT while being pestered by a cat. 😊
I have a shop cat that I rescued from starvation. He appreciates it so much that he will throw a dead mouse at my feet from time to time and I give him a treat for his actions. I was never a cat person but a man needs to be careful about not showing compassion when it’s in his power to do so.
@@prevost8686 I can understand people who have never learned what a relationship with a cat can be, they aren't all the same, but the ones who say things like it isn't manly or they hate cats for no reason, just baffle me. That is great you saved that cat and they can be easier to take care of than dogs and still make great companions. My cats and dogs take turns, or at the same time, coming into my home shop to see what I am up to, even though they also stay in the house with me. My grandfather feeds the neighbor's cat and little dogs since they both fit through the iron fence, so he gets some interaction without having to commit to caring for another pet at his age, after his dog passed a while back.
Congratulations on finishing up the engine rebuild for the C18!!!
Worked at Anchorage Intl airport, we had some of those in Osh Kosh snowblowers that only powerd the blower section the chassis had a c15. What a fun machine to operate! The c18 were straight piped and when the load came on they were singing a song! Always thought that engine would be cool in a truck.
I always take those piston packs apart too, got a cheep KD universal ring compressor I've had for years works great
Miss Kitty was the real business over, checking how the job's going even on Labor's Day 😁
Spy cat.
I was wondering if we'd get to hear it run, you did not disappoint. Now 41 years in the trucking business and had not until now seen nor heard a C18 run. I'll look for the spec's on this engine here in few minutes but imagining this engine in a truck frame, with 18 speed, 4.44 rears on tall 24.5" rubber, it could move a mountain - the Rockie Mts that is. The two pieces between turbo's is also used on the Cummins X-15 (just a single tube) between the exhaust manifold and EGR cooler which on my Kenworth T-880 failed (become loose). Every time the regen cycle came on, exhaust fumes seeped past the ring and fed carbon monoxide fumes under the hood and into the cab which made me very sick. It took the shop two weeks to repair the damage and make good again. Still don't know how or why it failed on a truck less than 3 years old. Loved watching this video, you make it seem so easy.
If two hoses look like rubbing and there is enough room I'll use a P clamp on each hose then bolt them together. Keeps them separated
Thanks!
Thanks so much.
That C18 is music to the ears. That is a chipper! Glad to see our dude Josh building the best! CAT
Im not involved in the heavy duty equipment industry at all. I used to run bush equipment and/or drove logging semi trucks in the past. I just like Cat engines and think yer work is high degree of competency and enjoyable to watch. Id never go back to punching a clock, fak dat chit.
Thanks for the show Josh 🍻
A very good and informative little series . Interesting to see the job done as it should be and not on a cheap budget just to get it running again till next time . Not the everyday type of engine repair I normally watch however I thoughourly enjoyed it many thanks
Aussie Electrician here. Love the videos, Josh. I wanted to be a diesel mechanic or electrician when I left school. Scored an Electrician Apprenticeship and completed that. Still love big diesels. Working in the coal mines a fair bit, I still get my diesel fix there and your channel.
Yeah they didnt check the backlash after my 2 million rebuild on a 95 5ek and my engine was whining when warm. They said and made me replace the air compressor. Didnt work, they said it was done and i was listening to ambient noise. I bought a stetoscope and yup it was the adjusting gear whining. Fixed it before it blew up the front. Mostly it was driving me nuts.
That’s a nice shop partner you got there she’s a cutie. I’m sure she helped a bunch. 😂
Happy to hear you mention the self employed business owner. I own my own business and have for almost 20 years. No paid holidays, no paid insurance, etc. It has its advantages, but it’s not for everyone for sure. Discipline is a must.
I used to work for a logging company that had two Morebark brand whole tree chippers. They had 1,200 hp Cummins engines. Those things were a beast.
True, AGREEE! Always verify measurements, Always Verify Torques unless you love redoing it over and over again!
Man, as soon as it fired up you could hear that beast ran better. Awesome work!
Good vid. Self employed and loving it.
Also, building a 7.3 PSD with a 3208(ho) injection system.
Always a treat to watch all the hard work you do. Appreciate the videos
Great job on that monstrosity of an engine🤘. There are so many procedures not found on a gasoline engine.
Im just a diesel nerd that loves this channel and im thinking of getting into the industry
You're a pretty cool guy josh, I really enjoy your videos and your companions at the end. Safe travels wishing you the best.
It sounded so smooth when it started!
Hey Josh nice to have you back!
i really wanted to see the head bolts being torqued, those magnificent clicks
The shop cat really loved you ❤️ 🐈
Headed to a 3412E in a horizontal grinding mill. Over 20,000 Hours grinding railroad ties on that unit.
Josh, I'd agree, there are a number of places that I trust my "calibrated arm" or just an impact, but the powertrain and drivetrain aren't on that list. I keep my torque wrenches certified, and use them on every engine.
For the crane you could put different pins in at the bottoms of those struts so you could put a piece of pipe across and secure it with cross pins. That’d give you something to pull on and keep the frame of it aligned.
Had like 5 or 6 C13s break the bolts for the cam retainer plate. The bolts will have their heads break which will fall through the timing gears and some times break a bunch of gear teeth.
I think it's from rust building up between the block and the front gear cover putting weird stresses on the 4 cam bolts. Just my theory.
Pretty crappy job too because the cam gear is pressed onto the cam. So you need to pull the cam all the way out to get the full front cover off
Get a proper respirator mask with the charcoal filters for painting, they will let you breathe without getting all the fumes. Those jock cup dust masks will just save you from blowing Cat yellow boogers later.
Enjoy your evening with all your family around you,Adept Ape
👍
WISE,Adept Ape
Adept Ape,take care
From Nick Ayivor from London England UK 🇬🇧 ⏰️ 22:36pm Good Evening
Hello Nick and thank you, sitting at home with our newborn baby.
I go into a trans watching you work you are a master
I’ve always wondered why Cat incorporated spacer plates, shims, etc in between the head and block on some engines. I’d love to hear it from a Cat engineer but I won’t hold my breath. My only guess would be that they found that certain designs were having unacceptable “gasket scrubbing “ between the head and block and using plate/shim designs alleviated the issue.That’s just a guess though.
Didn't eliminate the wear issue completely versus non-spacer engines' earlier manufactured engines. Cummins uses liners with press fit upper flange and still have liner ledge wear problems.
I remember when the coolant ferals had a copper squash collar instead of the plastic centers. When ever I had a front structure off, I would put silicone sealant on the two half inch studs for the fan drive. I've had too many 3400 series engines leak oil around those studs.
Cat spray paint part numbers for those who are curious.
Standard performance topcoat yellow 590-0196
Standard performance primer yellow 458-9582
Hi temperature topcoat black
458-9583
Standard performance topcoat high gloss black
458-9586
Thank you.
Josh, so glad you got plenty of work!!!!
Looks solid rebuild to me.
ZK Mastertech showed a John Deere with split exhaust manifold with same ring style set up. Also gave him a pain in the neck for assembly.
Built from a bare block by a professional.....should be a good engine
On your point about painting and headaches, i found if you arent using a filter respirator, make sure the mask has a carbon layer. I had a job where i was rolling CARC paint on stencils, its real harsh stuff. Working around a container and other guys i could paint all 6 number stencils in like 2 hours and never had a headache with a dust mask that had a carbon layer, it might have been a N95, but this was 2018/2019 so i dont remember anymore
Well done Josh.
15:54 That is a dial indicator, a depth micrometer is a different tool. I know this has been noted before. Do not want Josh to get into trouble with the machinists out there.
@@mmm365since we’re correcting, that would be “protrusion”
@@mmm365He should have also capitalized the first letter. Just saying. Grammar police are much like real police. They’ll pass you doing 95, go a few miles, then do a u turn behind a bush to pop you for 5 over….
Looking fantastic Josh 👍🏻🏴
Great series Josh! Thank you.
Nice job, Josh!😊
all good videos take care again.
the twin turbos like these are the sickest LOL
Like that filler gauge trick.
if you where wanting a dust mask to stop solvent vapors look for the ones that have an activated carbon layer in them like the 3m 9923V ones
i have the same rotary tool from amazon. It's been working fine for me.
Good to hear, I've used it a couple times now and it's nice for doing quick engraving.
Good work bud..I enjoy ur top notch work
Awesome job on the yellow beast.🤘
Days off ? Holidays ? Overtime pay ? Don't do farming if you want any of those things lol
Take old liner to machine shop and they can cut a taper and square it up
Spot on👊🏻🇺🇸
Congrats on the new perkapillar addition to the family. Lol
Block plus plate on the bottom plus a 2 piece oil pan and a 8 piece gasket, what could possibly go wrong? Been there and did that on a 988H, it didn't leak😀I primarly do transmissions, engines are far to complicated for this old bloke. I did my time on 3306, early 3406/8 and D343's, 40 years ago.
I've never done a transmission before. Seems like a box of magic in there. I'll stick with pistons.
I’m with AdeptApe on this one. Automatic transmissions are a Pandora’s box to me.
D342? Come on man, you’re making me feel old! Oh wait, I am old. It was 40 years ago!
@@AdeptApe "box of magic" i like that.
Hey Josh, this is Walter, looking forward to meeting you in October, hopefully everything goes through so you can do my overhead!
I use the straight arm big fan paint technique.
OTC makes good products.
I hope if you ever get a customer that wants to do it on the cheap you tell them to bugger off.
I've learnt the hard way and when it all goes to shit guess who gets the blame
Thank you for the goat!!!!
Thanks for another great video
.014 + or - .010 is kinda nuts to me. They're saying 0.004 to 0.024 are both fine. That's a HUGE difference.
With those tolerances it will either wear in..... or out......
Thanks for sharing your video.
Great video series.
Job, well done.
You may want to try the 3M 6002 masks. They come with different filters (i believe) I have some that filter VOCs , like solvents in paint. Be prepared to smell nothing even in the most smelliest areas :D
Nice work!
Mom should be worried about the fact that someone thought you needed a little kitty in this video! Ha ha i couldn't resist! Great work your doing my brother! Love northern I da ho!
Here happens to be a novel idea, get yourself an actual respirator that fits correctly and don't use a dust mask when painting!
I think you could make a ring compressor out of an old liner
Good job man !
Hey josh this was relaxing watching you work and interesting but it's a shame there no footage of the grinder working
Cool beans! 👍
Josh, do you have a method to remember where the bolts came from when disassembling an engine or component? Great video. Thanks.
Good Video
hopefully cat improved the oil return passage from the head to the block since the 5EK the epoxy fix just seemed a little cheezy
Nice work. Is there a break-in procedure for a rebuilt engine like that?
yep, work it hard to seat the rings. less blowby, less oil consumption.
awesome job great work as alway
I wonder what powder shop the valve covers are at. If they were brought to us at precision powder and blast in rathdrum, they would have only taken ten days tops. And we have cat yellow powder in stock too. I wish you would have shown hooking the injector wires up. Would love to see that little 9/32 nut driver in use!!!
Also, I’ll bet you a steak that if you put a blanket on one of those cheap rolling tool trays that your four-wheel drive shop supervisor would happily hang out with you until she gets hungry again.
Hey Josh, congrats on finishing the rebuild, looks and sounds great.
I’ve had one question for you since you did your video on your stint in electrical power generation.
Why did you choose to get out of it and go to trucks? I work in EPG myself and feel so spoiled by the ease of working on a generator, can’t see why anybody would do anything else lol.
Hope to see you work on a genset now that you’re out on your own!
good job man.
You can almost guarantee that the triangle came cover on the back of the head is missing a corner or two. The countersunk screws usually cracks them.
That's because people over torque them.
Good one !
Good afternoon. First and foremost thank you for sharing your knowledge over the years I definitely appreciate you. I have a question on my 04 w900 c-15. I recently changed out my boost sensor and I have started to notice smoke while my engine break is engaged but I do not notice any smoke any other time. I recently did a head job on it I would say 10-15 thousand miles ago. No coolent loss and the oil looks good I just put new fuel filter, air filters, and have changed all the fluids. Any ideas?