Page 1 of 2 1 2 LastLast
Results 1 to 20 of 33
  1. #1
    Join Date
    Mar 2010
    Location
    Boksburg
    Age
    38
    Posts
    2,341
    Thanked: 198

    Default Uys is daar iets wat ons moet weet.

    Is daar??
    Attached Images Attached Images  
    Drikus Paulsen

    Trok: Ford Ranger 2.2 Xl-Plus aka RHINO sleep Echo Chobe.

  2. #2
    Join Date
    Sep 2006
    Location
    Pretoria / Motopi Village, Northern Botswana
    Age
    46
    Posts
    3,796
    Thanked: 335

    Default Re: Uys is daar iets wat ons moet weet.

    2014 Land Cruiser 76 SW with extras
    2019 Jaguar Inkwe 4 Offroad Caravan

  3. #3
    Join Date
    Jan 2013
    Location
    Friemersheim, Southern Cape
    Age
    59
    Posts
    4,772
    Thanked: 4691

    Default Re: Uys is daar iets wat ons moet weet.

    '98 Daihatsu Rocky 'The Kitty'
    '02 Daihatsu Rocky 'The Bully'

    "What can be asserted without evidence can also be dismissed without evidence."

  4. The Following User Says Thank You to Prof For This Useful Post:


  5. #4
    Join Date
    Feb 2016
    Location
    Paarl
    Age
    46
    Posts
    1,291
    Thanked: 784

    Default Re: Uys is daar iets wat ons moet weet.

    What happened to diesel engines with a million km+ on....haven't heard of one recently? If I am wrong I apologise...
    2009 Corsa Utility 1.7Dti (Business bakkie)
    2011 Honda CRV 2.4
    2007 Hyundai Atos (Tossie)

  6. #5
    Join Date
    Aug 2011
    Location
    Brackenfell
    Age
    38
    Posts
    2,191
    Thanked: 502

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by Nitebob View Post
    What happened to diesel engines with a million km+ on....haven't heard of one recently? If I am wrong I apologise...
    my persoonlike opinie. vanaf die nuuter (na bewering beter sterker, modern meer ekonomiese technologie) goed is wanneer die nie meer so goed is nie. Teveel elektronika wat goed beheer en laat fout gaan.

    As gat in piston brand, kan dit agv over fueling wees. nou waarom tel die computer dit nie op en limp mode of sny hom uit nie? Die goed word gemaak om te fail.

    Ek voel die laaste van die bakkies wat gebou was om te hou is Toyota d4d en vroeer, Isuzu dteq 2012 en vroeer, selfde Ford en mazda voor die t6, nissan tot en met d40 reeks

  7. The Following 2 Users Say Thank You to Dwayne P For This Useful Post:


  8. #6
    Join Date
    Mar 2010
    Location
    Boksburg
    Age
    38
    Posts
    2,341
    Thanked: 198

    Default Re: Uys is daar iets wat ons moet weet.

    Drikus Paulsen

    Trok: Ford Ranger 2.2 Xl-Plus aka RHINO sleep Echo Chobe.

  9. #7
    Join Date
    Oct 2013
    Location
    Planet of the Apes
    Age
    37
    Posts
    427
    Thanked: 315

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by Dwayne P View Post
    my persoonlike opinie. vanaf die nuuter (na bewering beter sterker, modern meer ekonomiese technologie) goed is wanneer die nie meer so goed is nie. Teveel elektronika wat goed beheer en laat fout gaan.

    As gat in piston brand, kan dit agv over fueling wees. nou waarom tel die computer dit nie op en limp mode of sny hom uit nie? Die goed word gemaak om te fail.

    Ek voel die laaste van die bakkies wat gebou was om te hou is Toyota d4d en vroeer, Isuzu dteq 2012 en vroeer, selfde Ford en mazda voor die t6, nissan tot en met d40 reeks
    Ek stem saam dat sommige van die bakkies en voertuie in die algemeen te veel elektronika en ander foefies het wat verkeerd kan gaan. My opinie is wel dat bitter min van die moderne diesel bakkies waarlik probleme gee veral met die motor self, behalwe miskien sommige Rangers.

  10. #8
    Join Date
    Jun 2016
    Location
    Randfontein
    Age
    34
    Posts
    2,343
    Thanked: 4502

    Default Re: Uys is daar iets wat ons moet weet.

    In my opinie is dit omdat hulle te veel krag uit n klein enjin probeer maak en dan ook nog foefies soos CATs en EGRs daarop sit wat gladnie voordelig vir die enjin is nie
    Willie Knoetze

    2019 Nissan NP300 2.5tdi d/c 4x4

  11. The Following User Says Thank You to FWM For This Useful Post:


  12. #9
    Join Date
    Oct 2010
    Location
    Pretoria
    Age
    62
    Posts
    1,790
    Thanked: 841

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by Dwayne P View Post
    my persoonlike opinie. vanaf die nuuter (na bewering beter sterker, modern meer ekonomiese technologie) goed is wanneer die nie meer so goed is nie. Teveel elektronika wat goed beheer en laat fout gaan.

    As gat in piston brand, kan dit agv over fueling wees. nou waarom tel die computer dit nie op en limp mode of sny hom uit nie? Die goed word gemaak om te fail.

    Ek voel die laaste van die bakkies wat gebou was om te hou is Toyota d4d en vroeer, Isuzu dteq 2012 en vroeer, selfde Ford en mazda voor die t6, nissan tot en met d40 reeks

    Hoe is die overfueling 'n elektroniese fout? Dit is 'n meganiese fout in 'n injector wat die sproei patroon be´nvloed, dan brand dit 'n meganiese gat in die suier.

    My Landy het 'n sensor in die ratkas wat die wringkrag met elke ontbranding meet, en vergelyk, en kan dan 'n inspuiter optel wat nie reg werk nie, en gee 'n foutkode. Dit is die voordeel van elektronika wat jou vertel as die meganika agteruit gaan.

    Op my D3 moes ek een inspuiter op 240k km vervang, foutkode was in ecu geregistreer.

  13. The Following 2 Users Say Thank You to faniedup For This Useful Post:


  14. #10
    Join Date
    Mar 2012
    Location
    Randburg
    Age
    39
    Posts
    838
    Thanked: 1535

    Default Re: Uys is daar iets wat ons moet weet.

    Ek dink baie manne chip hulle bakkie's dan met die sagteware wat meer gepeuter word stell hulle die sagte ware dat die injectors over fuel. Maar dis miskien n' ander dag se gesprek.
    GaryG


    Honda Civic Type R
    - Daily Drive
    Isuzu KB 250 Xrider - Swambo
    Grand Cherokee WK2 Hemi - Sold
    4.0 XJ Jeep Cherokee - Sold

  15. #11
    Join Date
    Oct 2016
    Location
    Polokwane
    Age
    55
    Posts
    1,122
    Thanked: 840

    Default Re: Uys is daar iets wat ons moet weet.

    Jeep Grand Cherokee 2002 4.7 V8
    Conqueror Courage 2016

  16. #12
    Join Date
    Aug 2011
    Location
    Brackenfell
    Age
    38
    Posts
    2,191
    Thanked: 502

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by faniedup View Post
    Hoe is die overfueling 'n elektroniese fout? Dit is 'n meganiese fout in 'n injector wat die sproei patroon be´nvloed, dan brand dit 'n meganiese gat in die suier.

    My Landy het 'n sensor in die ratkas wat die wringkrag met elke ontbranding meet, en vergelyk, en kan dan 'n inspuiter optel wat nie reg werk nie, en gee 'n foutkode. Dit is die voordeel van elektronika wat jou vertel as die meganika agteruit gaan.

    Op my D3 moes ek een inspuiter op 240k km vervang, foutkode was in ecu geregistreer.
    dit is meganies. My stelling was egter, daar moet 'n pressure verskil wees itv fuel delivery as dit eenvoudig over fuel/inloop. Fueling cycle/spray word deur elektronies komponente beheer oor wanneer dit plaas moet vind. Cam en crank angle sensors. Waarom kan fuel pressure drop/variance nie 'n trigger in ecu bring wat powerloss eml aktiveer nie? Alle stelsels is daar, maar word nie benut tot volle voordeel van klient/eienaar.

  17. #13
    Join Date
    Nov 2007
    Location
    Kathu
    Age
    59
    Posts
    10,295
    Thanked: 3984

    Default Re: Uys is daar iets wat ons moet weet.

    I think what we forget is that most of that older diesel engines were normally aspirated with low out puts.

    When they started fitting turbo`s on them everything changed. In most cases the old normal aspirated engines become turbo engines with minor mods. Believe me there were numerous failures on them as well. It is not as if the older engines were running flawlessly.

    Even mechanical pumps and injectors needs repairs at some stage. Most manufactures have had recommended service intervals for pumps and injectors. Even in those days it were hard to find good technicians to refurbish pumps and injectors to OEM specs.
    I can still remember a quote from Delta for a new 2.5 Isuzu diesel pump. It was close to the price of a new engine.

    Still remember the struggle to start those old diesels when cold or nearing a rebuild. Cannot remember when a new direct injection engine ever had problems firing up in even sub zero conditions.

    I prefer the modern common rail systems with their tronics beside the older generation engines. Think the fear of the unknow or lack of knowledge make people shooting them off. It is very seldom that tronics fail they usually last the lifespan of the engine.
    What I have seen on many occasions is that most problems relate back to mods and alterations done. So easy to do fault finding if you understand the working of the common rail system.

    The protection on the new generation engines is super and have saved many engines from destruction.

    Think the thing comes in how extensively a manufacturer test an engine before releasing it into the market. Also their approach if issues do arise after being released.

    The Million mile engines still exist and is a norm for big trucks. Talking about tronics the new trucks have far more advanced systems than most passenger cars and pickup trucks. Fault codes and problems can be identified remotely.

    Nobody moans about the newest cell phone and computer tech So who still prefers old slinger telephones.
    Last edited by grips; 2021/05/13 at 01:35 PM.

  18. The Following 8 Users Say Thank You to grips For This Useful Post:


  19. #14
    Join Date
    Dec 2011
    Location
    East London
    Age
    36
    Posts
    17,346
    Thanked: 2929

    Default Re: Uys is daar iets wat ons moet weet.

    I reckon if all modern diesel engines are serviced every 15'000kms (air, oil and diesel filters plus oil change) and the manufacturer stops employing EGR, CAT and DPF systems, then diesel engines will see 500k+ kms on a regular basis.

  20. The Following User Says Thank You to MariusFourie For This Useful Post:


  21. #15
    Join Date
    Nov 2010
    Location
    Henties
    Posts
    3,946
    Thanked: 1618

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by Dwayne P View Post
    dit is meganies. My stelling was egter, daar moet 'n pressure verskil wees itv fuel delivery as dit eenvoudig over fuel/inloop. Fueling cycle/spray word deur elektronies komponente beheer oor wanneer dit plaas moet vind. Cam en crank angle sensors. Waarom kan fuel pressure drop/variance nie 'n trigger in ecu bring wat powerloss eml aktiveer nie? Alle stelsels is daar, maar word nie benut tot volle voordeel van klient/eienaar.
    1) you are aware how a common rail works? The pressure pump pressurizes a fuel line which leads to all injectors, hence the name common rail. On the old school diesel engines each injector had it's own dedicated fuel line from the pump, where a pressure differential might have been picked up, if electronics would have been involved.

    2) an injector which produces an undesirable spray pattern, which in turn might cause hot spots in the cylinder and cause damage doesn't necessarily cause a variance in pressure. There would be small pressure drops in the common rail anyway, every time an injection takes place.

    What do cam and crank sensors have to do with common rail pressure and spray patterns?
    You can certainly monitor a lot more than what the average ECU does, but are you willing to pay for it?
    2012 FJ Cruiser
    1983 FJ60 Landcruiser

  22. #16
    Join Date
    Dec 2011
    Location
    East London
    Age
    36
    Posts
    17,346
    Thanked: 2929

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by HugoNotte View Post
    1) you are aware how a common rail works? The pressure pump pressurizes a fuel line which leads to all injectors, hence the name common rail. On the old school diesel engines each injector had it's own dedicated fuel line from the pump, where a pressure differential might have been picked up, if electronics would have been involved.

    2) an injector which produces an undesirable spray pattern, which in turn might cause hot spots in the cylinder and cause damage doesn't necessarily cause a variance in pressure. There would be small pressure drops in the common rail anyway, every time an injection takes place.

    What do cam and crank sensors have to do with common rail pressure and spray patterns?
    You can certainly monitor a lot more than what the average ECU does, but are you willing to pay for it?
    Crank sensors can pick up variances in crank speed across cylinders.

    If the variance is out of spec a CEL can be thrown.

    However, a failing injector may stay within variance until point of failure.

    A bad (or poorly adjusted solid) tappit/lifter or bad compression or worn camshaft lobes can also influence the crank acceleration on that particular cylinder.

  23. The Following User Says Thank You to MariusFourie For This Useful Post:


  24. #17
    Join Date
    Nov 2010
    Location
    Henties
    Posts
    3,946
    Thanked: 1618

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by MariusFourie View Post
    Crank sensors can pick up variances in crank speed across cylinders.

    If the variance is out of spec a CEL can be thrown.

    However, a failing injector may stay within variance until point of failure.

    A bad (or poorly adjusted solid) tappit/lifter or bad compression or worn camshaft lobes can also influence the crank acceleration on that particular cylinder.
    I agree, still don't see how common rail pressure and a faulty spray pattern could be picked up in a reliable way by crank or cam sensors.
    If damage is done, sure. Before that, I'm not sure.
    2012 FJ Cruiser
    1983 FJ60 Landcruiser

  25. #18
    Join Date
    Dec 2011
    Location
    East London
    Age
    36
    Posts
    17,346
    Thanked: 2929

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by HugoNotte View Post
    I agree, still don't see how common rail pressure and a faulty spray pattern could be picked up in a reliable way by crank or cam sensors.
    If damage is done, sure. Before that, I'm not sure.
    Egt on each cylinder will pick it up as with aviation standards

    But yeah, standard common rail, its tricky. Modern systems mostly outlast the warranty and for the engineers that's the criteria mostly.

    Africa is a small market where we (a pretty large percentage of people) like to keep old cars going for a long time.

  26. #19
    Join Date
    Jan 2013
    Location
    Friemersheim, Southern Cape
    Age
    59
    Posts
    4,772
    Thanked: 4691

    Default Re: Uys is daar iets wat ons moet weet.

    Uys, waar is jy?

    Reageer tog net......

    '98 Daihatsu Rocky 'The Kitty'
    '02 Daihatsu Rocky 'The Bully'

    "What can be asserted without evidence can also be dismissed without evidence."

  27. #20
    Join Date
    Nov 2010
    Location
    Henties
    Posts
    3,946
    Thanked: 1618

    Default Re: Uys is daar iets wat ons moet weet.

    Quote Originally Posted by MariusFourie View Post
    Egt on each cylinder will pick it up as with aviation standards

    But yeah, standard common rail, its tricky. Modern systems mostly outlast the warranty and for the engineers that's the criteria mostly.

    Africa is a small market where we (a pretty large percentage of people) like to keep old cars going for a long time.
    Even in aviation, EGT isn't measured on all cylinders as "standard". Probably the more modern, FADEC controlled piston engines have got EGT probes an all cylinders.
    The older stuff, of which still plenty around, usually have got 1 EGT probe.
    Hence you lean by "ear" and feel, until the engine starts running a tiny bit rough and then go a tad rich again.
    2012 FJ Cruiser
    1983 FJ60 Landcruiser

Page 1 of 2 1 2 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •