Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please check the Forum Guidelines at the top of the Newbie section

Pages: 1 [2]  All   Go Down

Author Topic: MISSFIRE !!!  (Read 2933 times)

0 Members and 1 Guest are viewing this topic.

Entwood

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • North Wiltshire
  • Posts: 19566
  • My Old 3.2 V6 Elite (LPG)
    • Audi A6 Allroad 3.0 DTI
    • View Profile
Re: MISSFIRE !!!
« Reply #15 on: 04 June 2008, 23:03:04 »
Excellent description that ....  :y :y :y :y

however ....  :(

this is a V6 engine .. so 1 & 4 are on different banks .. so a head gasket is highly unlikely .. :(

Due to the "wasted spark" system .. 1 & 4  both get a spark at the same time every cycle, only one uses it each time (compression) the other ignores it (exhaust) .. this seems to point very strongly at an HT problem ..

As the DIS has been changed   and I assume correctly and serviceable,  it could be a lead/plug breaking down and causing loss of spark on both simultaneously.

Logged

caolan_p

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • IRELAND
  • Posts: 251
    • View Profile
Re: MISSFIRE !!!
« Reply #16 on: 05 June 2008, 10:33:15 »
Quote
Excellent description that ....  :y :y :y :y

however ....  :(

this is a V6 engine .. so 1 & 4 are on different banks .. so a head gasket is highly unlikely .. :(

Due to the "wasted spark" system .. 1 & 4  both get a spark at the same time every cycle, only one uses it each time (compression) the other ignores it (exhaust) .. this seems to point very strongly at an HT problem ..

As the DIS has been changed   and I assume correctly and serviceable,  it could be a lead/plug breaking down and causing loss of spark on both simultaneously.

Thanks for the replys :y,i dont no what the HT is and what part of the exhaust do i check??
Logged

Markjay

  • Omega Lord
  • *****
  • Offline Offline
  • Gender: Male
  • London
  • Posts: 5417
    • View Profile
Re: MISSFIRE !!!
« Reply #17 on: 05 June 2008, 12:04:16 »
Quote
Quote
Excellent description that ....  :y :y :y :y

however ....  :(

this is a V6 engine .. so 1 & 4 are on different banks .. so a head gasket is highly unlikely .. :(

Due to the "wasted spark" system .. 1 & 4  both get a spark at the same time every cycle, only one uses it each time (compression) the other ignores it (exhaust) .. this seems to point very strongly at an HT problem ..

As the DIS has been changed   and I assume correctly and serviceable,  it could be a lead/plug breaking down and causing loss of spark on both simultaneously.

Thanks for the replys :y,i dont no what the HT is and what part of the exhaust do i check??

HT is short for High Tension and refers to the six thick black leads going from the DIS pack (prev. known as 'Distributor') to the spark plugs.

Logged
Alas, no more Omegas....

marinis69

  • Newbie
  • *
  • Offline Offline
  • Ashford
  • Posts: 30
    • View Profile
Re: MISSFIRE !!!
« Reply #18 on: 07 June 2008, 19:27:37 »
anyway can it be ECU ??? coz I have put a second hand DIS and still the same. I just dont want to buy new DIS for 100 quid and it will make no diference. although I am not sure if my second hand DIS is perfect.
Logged

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 107031
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: MISSFIRE !!!
« Reply #19 on: 07 June 2008, 19:33:56 »
Quote
anyway can it be ECU ??? coz I have put a second hand DIS and still the same. I just dont want to buy new DIS for 100 quid and it will make no diference. although I am not sure if my second hand DIS is perfect.
Never seen a failed Motronic ECU.

Check continuity between ecu and DIS.  And double and treble check the leads are fitted in right order on DIS.
Logged
Grumpy old man

marinis69

  • Newbie
  • *
  • Offline Offline
  • Ashford
  • Posts: 30
    • View Profile
Re: MISSFIRE !!!
« Reply #20 on: 07 June 2008, 19:53:16 »
well just an hour ago I striped all the engine in parts. Leads are connected by the numbers as it says on DIS number 1 to cil1 2 to cil2 and so on. the problem is that I have year 2000 omega cd model and it has absolutely diferent coil pack as this Elite. And there are 3 diferent types of them one vertical and two horizontals. I was just thinkin maybe there is somewhere a special tweak made for Elite model coz the engine is the same as CD model just the coil pack diferent.... I am loosin hope. Three weeks already playin with it and see no light in the tunnel. Anyway monday will try new coil pack. it might work. hopefuly.
Logged

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 107031
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: MISSFIRE !!!
« Reply #21 on: 07 June 2008, 20:12:47 »
Quote
well just an hour ago I striped all the engine in parts. Leads are connected by the numbers as it says on DIS number 1 to cil1 2 to cil2 and so on. the problem is that I have year 2000 omega cd model and it has absolutely diferent coil pack as this Elite. And there are 3 diferent types of them one vertical and two horizontals. I was just thinkin maybe there is somewhere a special tweak made for Elite model coz the engine is the same as CD model just the coil pack diferent.... I am loosin hope. Three weeks already playin with it and see no light in the tunnel. Anyway monday will try new coil pack. it might work. hopefuly.
3 different coil packs, purely decided by age.
Logged
Grumpy old man

marinis69

  • Newbie
  • *
  • Offline Offline
  • Ashford
  • Posts: 30
    • View Profile
Re: MISSFIRE !!!
« Reply #22 on: 10 June 2008, 11:33:11 »
YAHOOO :) everything sorted. Just dont undertand why 2 out of 3 coil packs were faulty. Third one sorted the problem ! :) Thanks for everyone help !!
Logged
Pages: 1 [2]  All   Go Up
« previous next »
 

Page created in 0.012 seconds with 17 queries.