User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 4 123 ... LastLast
Results 1 to 10 of 32

Thread: Injectors?

  1. #1
    Regular Member BigWilko's Avatar
    Join Date
    Jan 2010
    Location
    Barnsley
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Signum

    Trim : Design

    Engine : 3.0 CDTI

    Year : 2005

    Default Injectors?

    Having owned my V6 CDTI Signum for 4 months, the problems are starting to rear their ugly heads. I've been reading through threads but nothing seems to cover it exactly.
    I'm getting some enging vibration between idle and 1700 revs almost like a misfire but not as bad. i.e. cylinder still firing but maybe not quite right. I've had a slight lumpy idle for a while. It appears to go when under load though for example when holding on the biting point.
    At high revs i'm getting black smoke at high revs, 3000+. Not major and not all the time.
    I've been using redexx since i got it to try and clean the fuel system but i'm shamed to say I ran the tank VERY low last week. Think it might have something to do with it?

  2. #2
    Ex Vec-C Admin Ian-Highlander's Avatar
    Join Date
    Jun 2008
    Location
    Ely, Cambridgeshire
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    60 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Insignia Tourer

    Trim : Elite

    Engine : 2.0 CDTI (160ps)

    Year : 2010

    Default

    Might be worth pressure testing the cylinders, could be piston rings worn slightly.

    I assume you've already done the obvious, full service etc?
    "Doing a good job here is like wetting your pants in a dark suit, you get a warm feeling but nobody else notices"
    Maptun Tuned 2.0T Estate - click HERE for mods list.
    Brentwood 2012: Winner, Saturday Show. Hull 2012: Winner, Best Estate. Hull 2013: Winner, Best Estate & Runner Up, Best I.C.E

    Now Gone, bring on the Insignia (now "Teapot" Tuned)...

  3. #3
    Regular Member nutron's Avatar
    Join Date
    Jul 2005
    Location
    South Central England
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

    Default

    Do they have swirl valves?

  4. #4
    Regular Member BigWilko's Avatar
    Join Date
    Jan 2010
    Location
    Barnsley
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Signum

    Trim : Design

    Engine : 3.0 CDTI

    Year : 2005

    Default

    Not had a service mate. Had one just before i got it. Oil was crystal clear.

  5. #5
    Regular Member Celes's Avatar
    Join Date
    Sep 2007
    Location
    Slovenia, Koper
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

    Default

    Quote Originally Posted by nutron View Post
    Do they have swirl valves?
    Not the prefacelift mate.



    I got new injectors fitted in February and I'm still getting an occasional judder lower in the rev range, but only under slight load and only in a high gear. I too am getting smoke, only grey-ish, not always though.

  6. #6
    Regular Member
    Join Date
    Jan 2011
    Location
    Stoke on Trent
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    My V6 CDTi smokes when you rev its nuts off... and I have a judder from 1000- 1500 rpm when under load, I can hear an injector knocking on idle, but its not reducing performance too badly ... I've learned to ignore it!

    Does sound like an injector though - have you have a leak-off test done?

  7. #7
    Regular Member BigWilko's Avatar
    Join Date
    Jan 2010
    Location
    Barnsley
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Signum

    Trim : Design

    Engine : 3.0 CDTI

    Year : 2005

    Default

    Quote Originally Posted by smitd004 View Post
    My V6 CDTi smokes when you rev its nuts off... and I have a judder from 1000- 1500 rpm when under load, I can hear an injector knocking on idle, but its not reducing performance too badly ... I've learned to ignore it!

    Does sound like an injector though - have you have a leak-off test done?
    What does the leak off test involve?

  8. #8
    Regular Member nutron's Avatar
    Join Date
    Jul 2005
    Location
    South Central England
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

    Default

    The juder my be the DMF I guess. Smoke may be coming from worn turbo bearings.

  9. #9
    Regular Member
    Join Date
    Sep 2010
    Location
    Right here, right now.
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Vectra

    Trim : SRI

    Engine : 3.0 V6 CDTI

    Year : 2007

    Default

    Even though the EML light ahsn't come on there still may be a code registered, my facelift V6 had missfire on cylinder 1 logged but only threw the light on twice in 6 weeks or so.
    Try and get them read after the lumpy idle but BEFORE the key is removed.

  10. #10
    Regular Member
    Join Date
    Jan 2011
    Location
    Stoke on Trent
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Basically, a leak off test determines if any excess diesel is 'leaking off' from the injector.

    Not all fuel that is fed to the injector is used in combustion, and will be fed back into the fuel tank - via the leak off pipes on the top of each injector.

    If an injector is sticking open, or is performing poorly, it will leak off excessively.

    My local diesel specialist charged an hours labour for the test.

Page 1 of 4 123 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. injectors
    By sandy13 in forum Troubleshooting
    Replies: 6
    Last Post: 21st January 2012, 11:08
  2. 2.0t injectors
    By mann3210 in forum General Motoring Chat
    Replies: 5
    Last Post: 1st January 2012, 15:27
  3. injectors
    By damo-SRI-T in forum Petrol Engine related
    Replies: 19
    Last Post: 9th June 2011, 08:02
  4. Injectors? help
    By Ean in forum The 'Off Topic' room
    Replies: 7
    Last Post: 26th October 2009, 12:56
  5. Injectors
    By andymagee1982 in forum Engine & Drivetrain
    Replies: 9
    Last Post: 8th November 2008, 20:24

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

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
  •