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Author Topic: Miss fire 3.0 MV6  (Read 2850 times)

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Sir Popple

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Miss fire 3.0 MV6
« on: 06 February 2010, 14:52:41 »
Hi, I have a miss fire on my MV6 I have just changed the plugs to try and resolve it, but this has not resovled the problem. Could it be something else simple or should i restrip and do a compression test? Also Oil and water show no signs of water or oil ingress.

Thanks Steve
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zirk

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Re: Miss fire 3.0 MV6
« Reply #1 on: 06 February 2010, 14:55:12 »
Leads or Diss Pack?
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ScottieMV6

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Re: Miss fire 3.0 MV6
« Reply #2 on: 06 February 2010, 14:56:31 »
DIS pack? Sometimes water collects in the sponge under the scuttle directly above the DIS pack and then drips onto it. Could be this? :-/

EDIT: Must type faster! ;D
« Last Edit: 06 February 2010, 14:56:52 by scottie7275 »
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Sir Popple

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Re: Miss fire 3.0 MV6
« Reply #3 on: 06 February 2010, 15:01:41 »
She's a 2000 with leads
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RobG

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Re: Miss fire 3.0 MV6
« Reply #4 on: 06 February 2010, 15:05:17 »
Dispack or lead/leads breaking down. Can you `clip it for codes, get an idea what cylinder is missing
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Sir Popple

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Re: Miss fire 3.0 MV6
« Reply #5 on: 06 February 2010, 15:07:37 »
Sorry no, i do not have a Tech tool
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RobG

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Re: Miss fire 3.0 MV6
« Reply #6 on: 06 February 2010, 15:14:49 »
Quote
Sorry no, i do not have a Tech tool
Paperclip is all you need mate :y
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687
« Last Edit: 06 February 2010, 15:15:54 by RobG »
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Debs.

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Re: Miss fire 3.0 MV6
« Reply #7 on: 06 February 2010, 15:17:53 »
I had a dispack that 'split-open' due to water drippage, giving a sudden onset, severe misfire....as you probably know after changing the sparkplugs, the dispack is a pig to get at: behind the engine; above the bellhousing.

As the chaps have mentioned; a code diagnosis via counting the flashing of the EML (aka 'the paperclip test') would at least set you on the right track. ;)
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Sir Popple

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Re: Miss fire 3.0 MV6
« Reply #8 on: 06 February 2010, 15:31:51 »
I have tried the paper clip check but eithier i am dim or something else but i can not get it to work?
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Proz

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Re: Miss fire 3.0 MV6
« Reply #9 on: 06 February 2010, 15:35:18 »
Fill in your profile so people know where you are ... you may be near someone willing to take a look for you  :y
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Sir Popple

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Re: Miss fire 3.0 MV6
« Reply #10 on: 06 February 2010, 15:49:06 »
Have done, I live in Ireland!!! I am looking for a 2.2 Elite on Irish plates this 3.0 will cost around 2000 a year in road tax!!
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al brown

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Re: Miss fire 3.0 MV6
« Reply #11 on: 06 February 2010, 15:52:31 »
Quote
Quote
Sorry no, i do not have a Tech tool
Paperclip is all you need mate :y
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687
If the car is facelift model can it be paperclipped or does it need pedal trick.
Al
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RobG

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Re: Miss fire 3.0 MV6
« Reply #12 on: 06 February 2010, 15:55:23 »
Quote
Quote
Quote
Sorry no, i do not have a Tech tool
Paperclip is all you need mate :y
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687
If the car is facelift model can it be paperclipped or does it need pedal trick.
Al
2.0, 2.5 & 3.0`s can be clipped. 2.6 & 3.2 pedal trick. Some very early 2.2`s take the pedal trick others code reader only
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Ghost

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Re: Miss fire 3.0 MV6
« Reply #13 on: 06 February 2010, 16:05:53 »
I would tip more on the good old code 19,
I had the same prob with it and it was the cranc sensor
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Boatboy

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Re: Miss fire 3.0 MV6
« Reply #14 on: 06 February 2010, 23:34:37 »
If the problem is on the HT side, pedal or paperclip is academic as HT faults will not show.

To condemn my dispack when I had a misfire I pulled plug leads off one at a time with the engine running. 4 of them made the misfire worse and you could hear the spark jumping around the plug well. No's 5 and 2 made no difference and there was no spark noise. Therefore dispack had failed on the 5&2 coil.

A new Dispack sorted it, and while I was changing it I noticed the wadding under the scuttle was sodden, so I have now sealed around the wipers to stop it happening again.

Watch this space.

Steve
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