VM 2.5 dielsel help - AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand

JEEEPART
Find out how to advertise on Ausjeep?

Go Back   AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand > JEEP GARAGE > XJ / MJ Cherokee


Portal Register Forums Trading Your Jeep New Garage Mark All Read

Post New Thread  Reply
 
Thread Tools Search this Thread
  #1  
Old 1 Week Ago
Lawson  Lawson is offline
I just registered
 
Join Date: Dec 2017
Location: Kettering Tasmania
Posts: 8
What Jeep do I drive?: XJ
Likes: 0
Liked 3 Times in 3 Posts
Default VM 2.5 dielsel help

Hi everyone,

I have a problem with my XJ Jeep turbo diesel (which I love). Here’s the problem it will start and run fine and will sometime drive ok for a short period, however after a while it will blow large (and I mean large) amounts of black smoke and lose all power. I have changed the air filter, fuel filter cleaned the egr valve, changed the turbo hoses and checked the turbo fan all seem to be ok.

If I have done it properly I have attached a video of the engine running. The smoke it blows is very minor compared to how bad it actually is. I guess I am just after an expert opinion to confirm the timing chain. Could it be a head gasket ( I would assume would idle rough if a head gasket).

I am also having trouble locating a timing chain kit so any assistance would be greatly appreciated.

Sponsored Posts
  #2  
Old 1 Week Ago
amlav's Avatar
amlav  amlav is offline
CrawlerStar
 
Join Date: Apr 2010
Location: Melbourne Australia
Posts: 348
What Jeep do I drive?: XJ
Likes: 52
Liked 78 Times in 61 Posts
Default

As far I'm aware there is no timing chain . There are only timing gears in the td . I would say check the injector no.1 needle sensor wiring for continuity .
Also have a look in your engine bay and try to see if there is any of the loom wiring rubbing against the chasie or against any accessories . If all ok than add 200ml of 2 stroke oil in your diesel tank at fill up .
2 stroke oil helps with injection pump internal lubrication.
Black smoke means over fueling . It could be injector(s) or injection pump
not sure about this one .... Is the "Check engine" light comes on when it happens ???
  #3  
Old 1 Week Ago
layback40's Avatar
layback40  layback40 is offline
Grumpy Old XJ Dsl Owner
 
Join Date: Jan 2011
Location: Northern Victoria
Posts: 13,276
What Jeep do I drive?: XJ
Likes: 3,624
Liked 6,072 Times in 4,009 Posts
Default

Black smoke = over fueling or bad spray pattern.
Not a HG or head issue. Not a valve timing issue.
#1 injector sensor fault would cause a lack of fuel, so unlikely to be it.
Black smoke can be caused by poor injector spray pattern. You could try some injector cleaner or have the injectors tested. They may need new tips.
I cant see the video you mention.
Is the fuel you are using good quality, fresh & clean? poor fuel can cause issues. In the Autumn around April/May when fuel composition changes I sometimes see a minor black smoke problem with mine. Run tank nearly empty & fill from a different station (more expensive) & problem goes away.
__________________
98&01XJ VMs,06 KJCRD,I no longer question authority,I annoy it.More effect,less effort.10000Club
Likes: (1)
  #4  
Old 1 Week Ago
Lawson  Lawson is offline
I just registered
 
Join Date: Dec 2017
Location: Kettering Tasmania
Posts: 8
What Jeep do I drive?: XJ
Likes: 0
Liked 3 Times in 3 Posts
Default

Hi Amlav,

Will check the injector and add the oil and see how I how go! I have checked all the wiring and all appears to be in good condition. Will keep you posted and thank you so much for you assistance.
Likes: (1)
Sponsored Posts
  #5  
Old 1 Week Ago
Lawson  Lawson is offline
I just registered
 
Join Date: Dec 2017
Location: Kettering Tasmania
Posts: 8
What Jeep do I drive?: XJ
Likes: 0
Liked 3 Times in 3 Posts
Default

Thanks Layback40, I do choose reputable fuel stations when filling up (not that this means a lot) I also run injector cleaner through about every 3 tank, unfortunately the video is too large to attached and I am not sure how to reduce it.
It is a difficult one and the mechanics I have taken it to are also just guessing. I have a friend that owns a diesel injector shop so will pop out the injectors and get him to overhaul them and see how I go.
Once again I really appreciate your help.
Likes: (1)
  #6  
Old 1 Week Ago
layback40's Avatar
layback40  layback40 is offline
Grumpy Old XJ Dsl Owner
 
Join Date: Jan 2011
Location: Northern Victoria
Posts: 13,276
What Jeep do I drive?: XJ
Likes: 3,624
Liked 6,072 Times in 4,009 Posts
Default

Quote:
Originally Posted by Lawson View Post
Thanks Layback40, I do choose reputable fuel stations when filling up (not that this means a lot) I also run injector cleaner through about every 3 tank, unfortunately the video is too large to attached and I am not sure how to reduce it.
It is a difficult one and the mechanics I have taken it to are also just guessing. I have a friend that owns a diesel injector shop so will pop out the injectors and get him to overhaul them and see how I go.
Once again I really appreciate your help.
What you should do is have him 'pop' test them. This allows him to look at the spray pattern & make sure they go off at the correct pressure. If they are bad on spray, new tips needed, if just low on pressure, they can be adjusted. A full rebuild will probably cost several $100 each. I am at around 340,000km on one of mine & not showing injector problems.
__________________
98&01XJ VMs,06 KJCRD,I no longer question authority,I annoy it.More effect,less effort.10000Club
Sponsored Posts
  #7  
Old 1 Week Ago
Lawson  Lawson is offline
I just registered
 
Join Date: Dec 2017
Location: Kettering Tasmania
Posts: 8
What Jeep do I drive?: XJ
Likes: 0
Liked 3 Times in 3 Posts
Default

Mine cars only just done 200,000
Likes: (1)
  #8  
Old 1 Week Ago
layback40's Avatar
layback40  layback40 is offline
Grumpy Old XJ Dsl Owner
 
Join Date: Jan 2011
Location: Northern Victoria
Posts: 13,276
What Jeep do I drive?: XJ
Likes: 3,624
Liked 6,072 Times in 4,009 Posts
Default

200,000 km is just run in ! Unless there was a problem in the past it should be fine. Often if its only been used for short trips the injectors maybe carboned up. That can mess up the spray pattern.
__________________
98&01XJ VMs,06 KJCRD,I no longer question authority,I annoy it.More effect,less effort.10000Club
Post New Thread  Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


» Advertisements_AS2




Powered by vBadvanced CMPS v3.2.3



All times are GMT +10. The time now is 01:22 PM.




AJOR does not vouch for or warrant the accuracy, completeness or usefulness of any message, and are not responsible for the contents of any message. The messages express the views of the author of the message, not necessarily the views of AJOR or any entity associated with AJOR, nor should any advice be substituted as technical advice replacing that of a mechanic. You agree, through your use of this service, that you will not use AJOR to post any material which is knowingly false and/or defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, religious, political or otherwise violative of any law. You agree not to post any copyrighted material unless the copyright is owned by you or by AJOR. The owner, administrators and moderators of AJOR reserve the right to delete any message or members for any or no reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold harmless AJOR, the administrators, moderators, and their agents with respect to any claim based upon transmission of your message(s). The use of profile signatures to intentionally mislead or misdirect any member on this forum is not acceptable and may result in your account being suspended. Any trip that is organised through the AJOR forum is participated at your own risk. If you or your vehicle is damaged it is your responsibility, not that of the person that posted the thread, message or topic initiating the trip, nor the organisers of AJOR or moderators of any specific forum. This forum and associated website is the property of AJOR.





Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

AJOR © 2002 - 2018 AUSJEEPOFFROAD.COM. All corporate trademarked names and logos are property of their respective owners. Ausjeepoffroad is in no way associated with DaimlerChrysler Corporation or Fiat Jeep.
www.midlifemate.com wayalife.com jkwrangler.com ausjeepforum.com jk-forum.com canadianjeepoffroad.com cryptoprofitcalculator.net
vB Ad Management by =RedTyger=