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It appears i have underestimated volkswagen. It appears that they have rather large and girthy girthy injection units. I mean i'm impressed look at that what we have here an injection unit. That is electronically operated.

Yet the high pressure is supplied via the camshaft and this rocker arm as the camshaft rotates. It depresses. The side of this rocker pushing down on this plunger. And that's what creates the pressure.

In the doo doo doo chamber. That's what creates the pressure for the injector to spray and atomize. The diesel it appears that this pump is just a low pressure uh volume pump. It's just designed to move the fuel and the fuel runs into the head ends up at the injectors.

The cam runs cam pushes down pressurizes the fuel solenoid opens up sprays the fuel into the cylinder boom explosion. We have made power the intake and the exhaust valves are run over here off the cam. Actually the camshaft is here it appears that these are just uh rocker shafts for the injectors so down there that littler guy. That's actually the cam back in there because we see here we've got an intake or an exhaust.

An intake and an exhaust talking about these lobes right here another one there and another one there i like it.

100 thoughts on “Inside a vw diesel. high pressure injection #shorts #teaser”
  1. Avataaar/Circle Created with python_avatars MechanicForPeople says:

    I can't believe that 1.9 tdi – PD injection arive also in USA. I worked at least at 200 engines here in Europe. Here it's a legendary engine . Every average or poor guy have this time of engine because of small costs of maintenance. I have a lot of friends with those engines and some of them have even more that 500.000 miles . It is an amazing inginery and if you replace in time some things this engine pass 700.000 miles. Happy to see that.

  2. Avataaar/Circle Created with python_avatars Mark Vickers says:

    Doo de de doo

  3. Avataaar/Circle Created with python_avatars Chas aka Bigcheezmoe says:

    Oh, another Rainman Ray short.

  4. Avataaar/Circle Created with python_avatars Joshua L says:

    Looks just like what Caterpillar used for years. EUI system.

  5. Avataaar/Circle Created with python_avatars mike Sandi says:

    Of corse it's a VW because has a do do do injectors 🤣🤣🤣🤣🤣

  6. Avataaar/Circle Created with python_avatars joenissan says:

    Do doo da dooooooo

  7. Avataaar/Circle Created with python_avatars Dazed Dottie says:

    The phone my fav character to hear you impersonate

  8. Avataaar/Circle Created with python_avatars Alouis Schäfer says:

    Basically a miniature Caterpillar with 2 cylinders missing

  9. Avataaar/Circle Created with python_avatars HOMEGUY4X4 says:

    I've got a 2013 VW Passat TDI 2.0 my back and forth to work car… love that things

  10. Avataaar/Circle Created with python_avatars Justin.S says:

    doo dee doo chamber lmao.

  11. Avataaar/Circle Created with python_avatars Alouis Schäfer says:

    Pumpe Düse aka Unit Injector
    Because the Commonrail was still in the making…
    These guys need a VW 50501 approved 5w40 oil. Usually says "VW PD" on the label somewhere too.
    Be mindful about that.

  12. Avataaar/Circle Created with python_avatars Kevin Curry says:

    This will be fun

  13. Avataaar/Circle Created with python_avatars Greg Bell says:

    EURO CRAP!

  14. Avataaar/Circle Created with python_avatars Job38 Four says:

    Right now anything will beat Ford Echo Boost or Ford Bronco motors…..

  15. Avataaar/Circle Created with python_avatars Joe B says:

    I have a 2006 bew Jetta wagon last of the mk4 body style.. 415,000 kms she got another 200k+ in er I’d say.. still original clutch and turbo.. hard to believe ehh

  16. Avataaar/Circle Created with python_avatars David Utidjian says:

    Wow that is cool. I used to work on the VW Jetta/Golf diesels that VW made back in teh 1970s and 80s. They were VERY simple yet also very reliable IMO. I still have all the special tools for doing "tune ups" (wrenches, camshaft lock, flywheel lock, injection pump timing indicator, valve clearance tools and shim sets.) Might even have the Robert Bentley manuals for working on them. Most of it completely worthless now.

  17. Avataaar/Circle Created with python_avatars Jonathan A says:

    LOL! Large and girthy

  18. Avataaar/Circle Created with python_avatars Sebastian Flocke says:

    Very good system, as long as you dont push it to its limits. The 1.9PD generally last forever, the 2.0PD not as much. There are also 2.5L PD TDI's in the VW T4 for example but these (and the 16V 2.0PD BRD) suffer from worn injector seats. Over time, the injection units wear into the head and this results in higher tolerances, which result in long cranks and injection problems. These system also suffer alot from soot collecting in the spray nozzles, which over time reduce your power output alot, espacially in the higher powered PD engines. Also, under the force of the compression stroke in the unit, the camshafts wear quicker and will eventually lead to a puffing sound out of the intake. Aaaaand these engines are known for rounding out the shaft that drives the oil pump, which will eventually lead to engine destruction. AAAAAND routing the injection cables through the oil isnt generally a good idea because these will fail over time and cause injectors to not fire anymore. AAAAAAAAAAAAAND keeping your two mass flywheel in good shape is also important, because a defectice flywheel can get the fuelinjection correction to fluctuate, which will in turn give you a rough running engine. And I almost forgot the cracking 16V heads, which usually crack between valve seats

    There are reasons why everyone switched to CR Diesel injection. But still, cool engines with alot of torque and a very unique sound. There was also a V10 PD TDI in the Phaeton and Touareg, which had gear driven cams, not belt or chain driven.

  19. Avataaar/Circle Created with python_avatars Robert Dillard says:

    Almost looks like an exhaust brake set up. A real exhaust brake like in big trucks

  20. Avataaar/Circle Created with python_avatars Heckleburger says:

    Welcome to the 1.9PD(Pumpe Düse) TDI engines, these were short-lived in the states but used longer overseas. It was a stop gap until common-rail and fuel standards(ULSD) arrived here. They require very specific oil as to not wipe out the cam shaft lobes because as you noticed they are under extreme stress. If it doesn't meet VW 505.01 spec than the oil is no good. The units themselves rarely have a problem, it's the camshaft and roller rockers that are sacrificed by the use of an incorrect oil.

  21. Avataaar/Circle Created with python_avatars Sharon Lent says:

    Ray, is there a way I can email you? I have a question about my car. I think I know what the problem is but I would like a pros opinion.

  22. Avataaar/Circle Created with python_avatars Jack Martin says:

    Amazing scientists 👨‍🔬

  23. Avataaar/Circle Created with python_avatars Ray Gale says:

    Have a look at GM's old Series 60 light industrial engines, electronic unit injectors waay back in the late '80s early '90s.
    GM's 71 series 2 strokes had mechanically controlled unit injectors waaay waaay back in the 1930's. Electronic unit injectors are good, until they aren't. Swap out an injector and the engine either won't start at all or runs very poorly until the ECM has been given new calibration numbers for the squirter.

  24. Avataaar/Circle Created with python_avatars Jeff Treseder says:

    It's not the girth that matters, it's how you use it.

  25. Avataaar/Circle Created with python_avatars Eric Furey says:

    Those are known as electronic unit injectors

  26. Avataaar/Circle Created with python_avatars oobaka1967 says:

    If "girthy" isn't considered a dirty word, it should be.

  27. Avataaar/Circle Created with python_avatars Christian Regitz says:

    my parents have a 1.9tdi from 2006 and it still runs great at almost 220k miles! one of the best engines vag group ever made.

  28. Avataaar/Circle Created with python_avatars Ted Stringer says:

    If you need the special tools for the timing belt, let me know. I’m local and have them.

  29. Avataaar/Circle Created with python_avatars Matthew Dale says:

    Good ol cam breaking pumpeduse. Careful with those injectors.

  30. Avataaar/Circle Created with python_avatars The Underground Lair of the Squankum says:

    Veeedy intedestink! I saw those rockers and was just confused. But I'm guessing that behind all of that is traditional VW inline 4 valvetrain: one cam, eight valves, vertical, in a row, bucket lifter (hydraulic) directly pushed up and down by the cam lobes, brutally simple and light weight (other than the width of that lifter.)

  31. Avataaar/Circle Created with python_avatars Mike Oswald says:

    Really interesting, as I thought (mistakenly) that all the European diesels had gone FADEC (ECU) controlled, common rail, 2 fuel pump designs. Too soon old, too late smart!

  32. Avataaar/Circle Created with python_avatars Nik Price says:

    I used to have an Audi A4 Avant with the 1.9tdi engine with those unit injectors. I think VAG call them PD or Pump Deuse injectors. The Volvo FH12 I drove for work had the same system. It's very reliable and generates lots of torque.

  33. Avataaar/Circle Created with python_avatars j p says:

    Hi Ray

    That is typically known as a “unit injector” system where the high pressure pump and injector are in one unit.

    This was first used in some military and serious off road/safari vehicles because of the reliability ; you could loose one cylinder and keep on driving but loosing the high pressure pump in a common rail system would mean engine failure.

    As you mention, the unit iniectors are beefy things, and the cam belt that drives them takes a beating! VW started to use off-round (not a perfect circle) on some of their cam belt pulleys to dampen the load on the belt.

    Keeping up on the cam belt changes is also good.. as for oil, it probably will be happiest with what is specified in the book!

  34. Avataaar/Circle Created with python_avatars Fedi says:

    VAG engines are actually really good when u take good care of them.

  35. Avataaar/Circle Created with python_avatars MindDrive says:

    where is the doodedooodooo chamber??? 3 mechanics threatened to call the cops when apparently im the bad guy

  36. Avataaar/Circle Created with python_avatars Brian Kmetz says:

    As mentioned many times already, good engine but it was oil type critical. VW made the cam lobes for the valves thinner to make room for the huge injector cam lobe. This put a LOT of stress on the valve lobes. A lot of owners used synthetic 5W-40 diesel rated oil to get something a little heavier for the lobes. The VW spec oil was 5W-30. The VW PD engine was the last engine that was EPA compliant. The next generation engine, the common rail, introduced in 2009, was never compliant in regards to NOX and was part of the diesel-gate scandal (2009-2015 models). I drive a 2015 Passat SE TDI, the last year one could get a manual transmission in a Passat.

  37. Avataaar/Circle Created with python_avatars Alexander McKay says:

    And there is another pump in the tank. 20 psi from the tank, 200 psi the the injectors, and 2000 psi to the cylinder. Quite amazing and fantastic.

  38. Avataaar/Circle Created with python_avatars SheerWill Survival says:

    Wow crazy

  39. Avataaar/Circle Created with python_avatars Tired old mechanic says:

    Detroit Diesel used cam operated injectors starting in 1938. It was very common in diesel engines.

  40. Avataaar/Circle Created with python_avatars HelterSkelter says:

    That pump is a Pump deuse. Pumps fuel in one half….
    And creates vacuum in the other. Combined vaccum/fuel pump

  41. Avataaar/Circle Created with python_avatars Andrzej Zieliński says:

    Injectors are integrated whit the pump, the downside is a high cost of the unit.

  42. Avataaar/Circle Created with python_avatars Cmdr Damaskus says:

    do do ta do chamber . yes yes yes do do ta do

  43. Avataaar/Circle Created with python_avatars james says:

    I've got a 1.9 tdi bluemotion golf

  44. Avataaar/Circle Created with python_avatars Tom Mcglynn says:

    I have 06 10 Jetta and a 15 GolfWagon. 👍

  45. Avataaar/Circle Created with python_avatars Glen Fynney says:

    doo doo de doo chamber… pmsl – thats awesome ray!!!

  46. Avataaar/Circle Created with python_avatars Jeffrey Kee says:

    pumpe duse❤️

  47. Avataaar/Circle Created with python_avatars Chris Bailey says:

    And that is how you cheat emissions!!!

  48. Avataaar/Circle Created with python_avatars T Stuart says:

    Oh NO, the do-de-do chamber.. couldn't stop laughing. Just what I needed. Thanks Ray.

  49. Avataaar/Circle Created with python_avatars Howard Pringle says:

    I used to drive an 84 deezel Wabbit. Filled it up once a month whether it needed it or not.

  50. Avataaar/Circle Created with python_avatars Semper Fi Mechanic says:

    When is the full video brother

  51. Avataaar/Circle Created with python_avatars SDI Automotive says:

    Quite good engines these but once there get to certain mileage injector seats and injectors themselves wear out and then it needs expensive repair basically one of the design flaws beside few others
    Nice explanation
    Thank you for the video and greetings from a 🇱🇹 😉

  52. Avataaar/Circle Created with python_avatars S Bayko says:

    We want more we want more

  53. Avataaar/Circle Created with python_avatars Paul King says:

    Doolooloo LOL My best typed version of your phone ringing LOL I just wanted to say thank you for the laughs, knowledge and entertainment. I came across your channel a few days ago and now share watching them with my wife. Keep up the GREAT videos and fighting the armchair mechanics. We are a couple of the few who watch videos for the entertainment and what ever knowledge we can get. This country needs MORE caring, professional and OCD mechanics and professional what evers like you. BTW, I'm currently restoring a '65 Chevy C10.. Thanks again Brother..

  54. Avataaar/Circle Created with python_avatars Eddie B says:

    I'm looking forward to the full length video on these massive high pressure fuel injectors!

  55. Avataaar/Circle Created with python_avatars julius liles says:

    All hail the chairman, never forget the Hindenberg!

  56. Avataaar/Circle Created with python_avatars Bob DeRemer says:

    Looks like a miniature Caterpillar 3406E setup. Go checkout KT3406E 's channel and tell me I'm wrong😉😁

  57. Avataaar/Circle Created with python_avatars Rekuzan Rikudo says:

    Even Jokeswagon can surprise you every now and then…

  58. Avataaar/Circle Created with python_avatars Cody Phillips says:

    Gotta love them PD motors.they eat cams like crazy though. I'll keep my old school distributor injection pump. ALH motors for life 🤘🤘🤘🤘🤘🤘

  59. Avataaar/Circle Created with python_avatars Jon Sinclair says:

    Cool goodbye injection timing

  60. Avataaar/Circle Created with python_avatars Richard Smith says:

    They always made good diesels, especially when GM made that nightmare converted 350 diesel. My uncle had an Oldsmobile 98 with one and after 3 replacements, he told them to just put a gas engine in it.

  61. Avataaar/Circle Created with python_avatars Andrew Law says:

    Loved my Passat B6 Pumpe Duse engine, super low down torque, great fuel economy and quick. A fella at work had the pool car (a B5 Passat) and blew it up on the M1 going to Northampton. He maintained it just lost power but I later wormed out of him he was doing an indicated 135mph at the time! 😂😂

  62. Avataaar/Circle Created with python_avatars Chad Sanders says:

    Not a Explosion!!!, Controlled burn,

  63. Avataaar/Circle Created with python_avatars campingkillen says:

    Doo doo do do chamber…..😅

  64. Avataaar/Circle Created with python_avatars NO_EYES_ON_ME says:

    Meanwhile the rest of the car is poor quality.

  65. Avataaar/Circle Created with python_avatars allan winter says:

    They made 3, 4, 5 and 10 cylinder versions of the P.D. Engine. 70 – 300+ BHP.

  66. Avataaar/Circle Created with python_avatars Rudi Christensen says:

    it's VW…so you know it's bad

  67. Avataaar/Circle Created with python_avatars Bob Smith says:

    The pressure in the doo de Doo de Doo chamber 😂

  68. Avataaar/Circle Created with python_avatars Mark says:

    damm, vw's run on doo de dooos

  69. Avataaar/Circle Created with python_avatars tom TKE says:

    Isn't that an unusually CLEAN engine?

  70. Avataaar/Circle Created with python_avatars Curtis Hill says:

    Roller rockers for them👍is that what a GDI is about?

  71. Avataaar/Circle Created with python_avatars Terry max says:

    First time knowing this .😁

  72. Avataaar/Circle Created with python_avatars Dan Jackling says:

    Great engines,diabolical electrics throughout the rest of the car…they go wrong for fun…

  73. Avataaar/Circle Created with python_avatars zMeul says:

    it's a TDI-PD engine, discontinued due to lower efficiency, but they're quite reliable
    my 2006 Touran has one like that, 1.9 TDI-PD BRU (engine code) – odometer reads 274746 Km

    put VW 505.01 oil in it and that engine will outlast the chassis 😗

  74. Avataaar/Circle Created with python_avatars Paul says:

    2.0TDI BKD Gets 60mpg done 185k love it.

  75. Avataaar/Circle Created with python_avatars bcrispo says:

    Love your sense of humor. Have to be there to get some of it

  76. Avataaar/Circle Created with python_avatars Baza Sulli says:

    Volkswagens PD system was a great system and pretty reliable. Expensive when something did go wrong but if you look after them it would be rare.

  77. Avataaar/Circle Created with python_avatars thereissomecoolstuff says:

    Get rid of that monster truck Ray. Grab a '15 Passat TDI, get 48 mpg and fly around Florida.

  78. Avataaar/Circle Created with python_avatars AJ67901 says:

    Interesting design!

  79. Avataaar/Circle Created with python_avatars Keith Malmberg says:

    Wife drives a 14 passat TDI. It has 198k on it and gets 45mph.
    Great car. Interesting way to do the injection.

  80. Avataaar/Circle Created with python_avatars Vince A says:

    A monster engine that provided endless gobs of torque! I had one mated to a five speed manual. Still driving VW diesel today, this time 3.0 litre V6 in a Touareg. I haven't driven gas for years, the tourque these engines produce is too addictive to give up!

  81. Avataaar/Circle Created with python_avatars brenda aaij-laauwen says:

    Thats why that engineering fails…

  82. Avataaar/Circle Created with python_avatars Pronoun Pigglet says:

    Over here, (over the pond ray) we have loads of old; 1.9tdis go forever. Sure they leak but you have to do something wrong for it to not go 250k+

  83. Avataaar/Circle Created with python_avatars Vernon Zimmerman says:

    360K on my 2002 Jetta TDI (ALH, the engine before this with injection pump)… everything was great… Immobilizer decided I shouldn't drive it anymore… that would be an interesting (infuriating) video.

  84. Avataaar/Circle Created with python_avatars howardsen666 says:

    Pumpe Düse 💪🏽

  85. Avataaar/Circle Created with python_avatars BIG C says:

    Cool!

  86. Avataaar/Circle Created with python_avatars Prepare2Survive says:

    I would still prefer the older VW diesel engines from the 80s because those you can add a waste veggie oil fuel tank to so you can drive on some free fryolator oil from your local Chinese or fast food restaurant.

  87. Avataaar/Circle Created with python_avatars Kris says:

    PD engines are good mileage munchers but the 150ps was prone to adverse camshaft lobe wear resulting in black smoke, low power, lumpy idle.
    My Golf GTI TDI PD150 25th Anniversary (ARL) was purchased in such condition.

  88. Avataaar/Circle Created with python_avatars cro_ 82 says:

    I had a really fun diagnosis with that kind of engine,long cranking time when the engine is half warm and steady for several hours,after painful 3 days i realized that the O rings on injectors inside head are bad,i don't like that design

  89. Avataaar/Circle Created with python_avatars William Duhamel says:

    Isn’t that the reason VW was sued for falsifying their fuel economy results?

  90. Avataaar/Circle Created with python_avatars adzik1302 dziku says:

    In a doo doo doo chamber. I just fell off the sofa laughing

  91. Avataaar/Circle Created with python_avatars Anthony T says:

    Shame they don't/won't make these cars for the US anymore. Great cars, I have a 2014 as a daily driver 45+ mpg

  92. Avataaar/Circle Created with python_avatars Jon Lowe says:

    Those pump dust VW diesels were great engines, as long as you used a very specific VW approved oil. If you didn't, the valve cam lobes would wear, because they had a narrow contact area. Valvoline made an approved oil, and there were some European oils also approved. The engines also had a chain driven balance shaftcsystem that could fail, and there was a gear driven replacement, or you could delete the balance shaft altogether.
    I had one in a 2005 Passat wagon. It had a mild tune on it, and it had a lot of power. All the US Passat diesels were automatics, but I imported a Euro manual conversion, and it transformed the car. I wish I'd never sold it.

  93. Avataaar/Circle Created with python_avatars Bruce Felger says:

    put 270,000 miles on a 98 TDI, averaged 48-50 MPH from day one until the day i traded it in.

  94. Avataaar/Circle Created with python_avatars richard cranium says:

    its a unit injector. the sollenoid work to deliver a specific fuel charge instead of a rack like detriots. caterpillar had these back in the early eighties on the 3406 PEEK engines

  95. Avataaar/Circle Created with python_avatars Robert Amantea says:

    I like this car. I should get one..

  96. Avataaar/Circle Created with python_avatars Bill Browning says:

    Nifty!

  97. Avataaar/Circle Created with python_avatars Stephen Bullock says:

    I hate it.way can't they keep it simple.I liked the old school air cooled 13 15 16 cc engines

  98. Avataaar/Circle Created with python_avatars Mike Wilson says:

    I had a 2004 Jetta TDI (pumpe duse) that had nearly 300K miles before I sold it. Yes, have to use high caliber oil (a very specific VW 505.01). Stay on top of the oil changes and regular maintenance and you'll be fine. I loved the VW TDI community who's motto is "Drive more and worry less."
    Look forward to the video!

  99. Avataaar/Circle Created with python_avatars Uncle Duncan's Shack says:

    The early days of diesel efi, and special VW software for the EPA.
    They never recovered from that.
    And Bosch warned them: Don't do it
    Das auto rauchen ist verboten!

  100. Avataaar/Circle Created with python_avatars Larry Maulsby says:

    "VERY INTERESTING" another interesting engine was the Toyota with the broken cam. What happened to that??? Doo Dee Doo Dee Doo?

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