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Author Topic: missfire?  (Read 885 times)

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lewis

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missfire?
« on: 19 February 2009, 20:30:33 »
hi ...i have a R plate MV6 auto that ran sweet as a nut till sat when it developed a missfire.... it seems no1 plug aint getting a spark changed the leads and still no joy please help?
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RobG

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Re: missfire?
« Reply #1 on: 19 February 2009, 20:35:16 »
Have you tried another plug :question
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lewis

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Re: missfire?
« Reply #2 on: 19 February 2009, 20:43:53 »
yeah still no joy?
might be worth adding there is oil in the plug wells will this have anything to do with it???
« Last Edit: 19 February 2009, 20:53:37 by lewis_mv6 »
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RobG

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Re: missfire?
« Reply #3 on: 19 February 2009, 20:57:37 »
Cam cover gaskets are gone, so the breathers are more than likely blocked and sounds like your dispac is going home as well :'(
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Entwood

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Re: missfire?
« Reply #4 on: 19 February 2009, 21:04:57 »
Quote
yeah still no joy?
might be worth adding there is oil in the plug wells will this have anything to do with it???


Breathers blocked, leading to cam cover leak, leads to contaminated HT, leads to misfires ... :(

Been there got the T-shirt .... :(

Do the cam covers/breathers ASAP, and thoroughly clean the HT leads with carb cleaner/ paper towel ... I got away with it on the old miggy .. if you don't .. new HT leads and possibly a new DIS pack ..  :(
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RobG

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Re: missfire?
« Reply #5 on: 19 February 2009, 21:08:52 »
Have a read of these two. Hopefully you won`t have to resort to the dispac change :y http://www.omegaowners.com/forum/YaBB.pl?num=1152564281
http://www.omegaowners.com/forum/YaBB.pl?num=1155224533
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lewis

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Re: missfire?
« Reply #6 on: 19 February 2009, 21:27:20 »
so just because no1 plug lead int getting a sprk is it right that it might just be because its covered in oil or am i gettin the wrong end of the stick?
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Entwood

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Re: missfire?
« Reply #7 on: 19 February 2009, 21:49:23 »
Quote
so just because no1 plug lead int getting a sprk is it right that it might just be because its covered in oil or am i gettin the wrong end of the stick?

Yup .. and because of the way the DIS pack works ... "wasted spark" method .. you might be losing spark to another plug as well, which makes the missfire seem worse ...

If it goes on too long it damages the leads beyond the cleaning stage .. and screws the DIS pack up as well ....  

so  get it cleaned and sorted .. :)
« Last Edit: 19 February 2009, 21:50:46 by entwood »
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Darth Loo-knee

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Re: missfire?
« Reply #8 on: 19 February 2009, 21:52:36 »
First things first get your Cam Covers & Breathers done.
If you have a spare set of leads try them see how it goes then.
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lewis

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Re: missfire?
« Reply #9 on: 20 February 2009, 19:22:29 »
update..... cleaned changed  plugs and leads and still the same?
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