Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Search the maintenance guides for answers to 99.999% of Omega questions

Pages: 1 [2] 3  All   Go Down

Author Topic: Starting with a miss-fire, when left overnight  (Read 458 times)

0 Members and 1 Guest are viewing this topic.

Doctor Gollum

  • Omega Queen
  • ********
  • Offline Offline
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 13524
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #15 on: 12 August 2019, 12:56:45 »

Loom fault will either be the trigger wire between the ecu and the coil pack plug or a busted plug not fitting the coil pack correctly... Easily crushed when fitting the coil pack if not paying attention.  ;)

Coolant has more chance of being the radiator than the head... But if it's not hitting the floor, it is evaporating off. Don't ignore the header tank, cracks around the cap neck can look like moulding seams ;)

Hth :y
Logged
Onanists always think outside the box.

tunnie

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37267
    • 3.2 Elite & Zafira Tourer
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #16 on: 12 August 2019, 13:29:29 »

Was very careful refitting everything, ordered a replacement new cap. Fingers crossed itís that.
Logged
Got a VW, Audi, Skoda or Seat? I have full Diagnostic software VCDS to read and program your car. Need something enabling? Perhaps full diagnostic? Drop me a PM. Can diagnose in Camberley or Osterley Area.

VXL V6

  • Omega Lord
  • *******
  • Online Online
  • Gender: Male
  • Solihull
  • Posts: 8925
    • 3x 3.2 V6 Elite Saloons
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #17 on: 12 August 2019, 18:58:16 »

Can you smell coolant when it's hot / cooling down? Had to replace radiators in a couple of Omegas I've had because of fine cracks at the very top of the n/s plastic shroud - as it gets worse you see it dripping by the drain plug that gives the impression that the drain plug is weeping.
Logged

dave the builder

  • Omega Baron
  • ******
  • Offline Offline
  • Gender: Male
  • Derbyshire
  • Posts: 2383
    • omega b2 2.6 cdxi
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #18 on: 12 August 2019, 19:09:08 »

you could rig up a simple pressure test rig with a foot pump and some hose clamps and hose  :-\
Logged

Nick W

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • Chatham, Kent
  • Posts: 7265
  • Rover Metro 1.8VVC
    • 3.0l Elite estate
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #19 on: 12 August 2019, 19:50:36 »

you could rig up a simple pressure test rig with a foot pump and some hose clamps and hose  :-\


Get a mountain bike or motor bike inner tube, cut it opposite the valve and attach to the cooling system in place of the driver's side radiator hose. Pressurise to 1bar, and go for a long lunch. It should hold pressure for that long. You can check used radiators this way, although it's pointless when a new one is <£100
Logged

tunnie

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37267
    • 3.2 Elite & Zafira Tourer
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #20 on: 12 August 2019, 19:51:42 »

Can you smell coolant when it's hot / cooling down? Had to replace radiators in a couple of Omegas I've had because of fine cracks at the very top of the n/s plastic shroud - as it gets worse you see it dripping by the drain plug that gives the impression that the drain plug is weeping.

Yes! There is a general whiff of coolant when hot and as I get out of the car. Iíll have a look around that area, so you have to take plastic top trim off to see it?

you could rig up a simple pressure test rig with a foot pump and some hose clamps and hose  :-\

Itís been pressure tested are Serekís = All good
Logged
Got a VW, Audi, Skoda or Seat? I have full Diagnostic software VCDS to read and program your car. Need something enabling? Perhaps full diagnostic? Drop me a PM. Can diagnose in Camberley or Osterley Area.

VXL V6

  • Omega Lord
  • *******
  • Online Online
  • Gender: Male
  • Solihull
  • Posts: 8925
    • 3x 3.2 V6 Elite Saloons
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #21 on: 12 August 2019, 20:02:05 »

Yes trims off a decent torch, difficult to see clearly but may see traces / stains of dried up coolant in that area.
Logged

dave the builder

  • Omega Baron
  • ******
  • Offline Offline
  • Gender: Male
  • Derbyshire
  • Posts: 2383
    • omega b2 2.6 cdxi
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #22 on: 12 August 2019, 20:04:28 »


you could rig up a simple pressure test rig with a foot pump and some hose clamps and hose  :-\

Itís been pressure tested are Serekís = All good
coolant is going somewhere , so not all good  :(


you could rig up a simple pressure test rig with a foot pump and some hose clamps and hose  :-\


Get a mountain bike or motor bike inner tube, cut it opposite the valve and attach to the cooling system in place of the driver's side radiator hose. Pressurise to 1bar, and go for a long lunch. It should hold pressure for that long. You can check used radiators this way, although it's pointless when a new one is <£100

I was thinking remove and blank the small overflow/return at the expansion tank ,then that leaves a small bore pipe to attach pump too ,easy to get at
Logged

tunnie

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37267
    • 3.2 Elite & Zafira Tourer
    • View Profile
Logged
Got a VW, Audi, Skoda or Seat? I have full Diagnostic software VCDS to read and program your car. Need something enabling? Perhaps full diagnostic? Drop me a PM. Can diagnose in Camberley or Osterley Area.

TheBoy

  • Administrator
  • *********
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 99341
  • Millennium Man
    • The missus mad
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #24 on: 13 August 2019, 19:59:46 »

Remove plenum (but keep its coolant lines in tack. Remove intake. Pressure cooling system to about 8psi. Visually look for leaks in valley, rad sides, coolant bottle, and block to head areas.


Misfire - jump in it tomorrow. Flow throttle to full kickdown, and crank - it shouldn't start. Crank for a good 5s, and repeat. Then start normally. Improvement? If so, replace injector.
Logged
I don't tolerate bickering, and I'm always grumpy.
And Lizzie Zoom says I'm a heartless bastid...and she's absolutely correct!

tunnie

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37267
    • 3.2 Elite & Zafira Tourer
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #25 on: 13 August 2019, 21:15:32 »

Will try pedal start trick, in Wales until Sunday though in the Zafira.

I have no means to pressure test coolant system.  :(
Logged
Got a VW, Audi, Skoda or Seat? I have full Diagnostic software VCDS to read and program your car. Need something enabling? Perhaps full diagnostic? Drop me a PM. Can diagnose in Camberley or Osterley Area.

Doctor Gollum

  • Omega Queen
  • ********
  • Offline Offline
  • Gender: Male
  • In a colds and darks puddleses
  • Posts: 13524
  • If you can't eat them, join them...
    • Feetses.
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #26 on: 13 August 2019, 21:19:11 »

Will try pedal start trick, in Wales until Sunday though in the Zafira.

I have no means to pressure test coolant system.  :(
Do you own a bicycle pump?
Logged
Onanists always think outside the box.

Nick W

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • Chatham, Kent
  • Posts: 7265
  • Rover Metro 1.8VVC
    • 3.0l Elite estate
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #27 on: 14 August 2019, 01:15:09 »

Will try pedal start trick, in Wales until Sunday though in the Zafira.

I have no means to pressure test coolant system.  :(
Do you own a bicycle pump?


that, a cheap bike inner tube and a couple of hose clamps.
Or a screw a replacement Schrader metal valve into a new(that doesn't leak) expansion cap and pressurise using your bike pump, less than 1bar is enough.
You could buy a test set, but you'll probably have to bodge an adapter so it's not worth the expense for the use you'll get.
Logged

tunnie

  • Get A Life!!
  • **********
  • Offline Offline
  • Gender: Male
  • Surrey
  • Posts: 37267
    • 3.2 Elite & Zafira Tourer
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #28 on: 14 August 2019, 12:25:51 »

I would have to buy all that, plus no time to do it.

Just realised though, Iíve not checked the passenger footwell yet to see if thatís wet.
Logged
Got a VW, Audi, Skoda or Seat? I have full Diagnostic software VCDS to read and program your car. Need something enabling? Perhaps full diagnostic? Drop me a PM. Can diagnose in Camberley or Osterley Area.

Nick W

  • Omega Lord
  • *******
  • Offline Offline
  • Gender: Male
  • Chatham, Kent
  • Posts: 7265
  • Rover Metro 1.8VVC
    • 3.0l Elite estate
    • View Profile
Re: Starting with a miss-fire, when left overnight
« Reply #29 on: 14 August 2019, 12:54:12 »

I would have to buy all that, plus no time to do it.



Oh.


Back to guessing then.


Good luck
Logged
Pages: 1 [2] 3  All   Go Up
 

Page created in 0.128 seconds with 22 queries.