Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: retrojim on 13 February 2010, 00:18:09

Title: 3.0 V6 Elite Missing through full rev range
Post by: retrojim on 13 February 2010, 00:18:09

Just started today - she misses across full rev range, on both idle and acceleration from cold. Temperature appears to be runnng cooler and average fuel consumption has dropped from 27 to 13 mpg.

Could it be slipped timing? DIS pack or knock sensor?

Will fault code check tomorrow. If it is the DIS pack how do you test - plug a timing light in series and look for flash - or pull a plug and earth it and look for spark.

Any suggestions appreciated. Normally would suspect DIS pack but it also misses on idle.

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: Entwood on 13 February 2010, 00:21:45

A misfire is a misfire ... be it at idle or high power ...

DIS/HT/plug failure = no spark .. regardless of RPM .. :(

I'm assuming no EML and no codes ???

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: Lazydocker on 13 February 2010, 00:41:33

Post the code results... I wouldn't be surprised if there aren't any (other than perhaps the misfire ones) which means it's HT related so DIS Pack/Plugs/Leads. ::)

Also check to see if the plug wells are filled with oil :y :y

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: Sir Popple on 13 February 2010, 10:06:20

I am in the process of going through the same check out my posts earlier this week for the help i got. On the older 3.0 V6 I was told that you will not get any fault codes for the Dis pack or HT leads if they are faulty. Good luck.......

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: retrojim on 14 February 2010, 17:23:13

Thanks for the responses - I've conducted the paperclip test - and got no fault codes (apart from the expected 12).

Is it possible to determine the required dis pack from the engine number - (its a 1997 3.0 litre, if thats helpful) or do you have to take it off to identify it I believe two different variants were used.

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: Mr.Salvador on 18 February 2010, 15:53:17

coil pack problems seem to be common pal.

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: Elite Pete on 18 February 2010, 16:37:28

Quote

Thanks for the responses - I've conducted the paperclip test - and got no fault codes (apart from the expected 12).

Is it possible to determine the required dis pack from the engine number - (its a 1997 3.0 litre, if thats helpful) or do you have to take it off to identify it I believe two different variants were used.

Its the plug shape that the difference.

Title: Re: 3.0 V6 Elite Missing through full rev range
Post by: tigers_gonads on 18 February 2010, 18:24:40

the plug on your maf will be the same shape as the coil pack  :y