Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: perfferle on 24 February 2008, 21:16:58

Title: Spark Plugs for 2.5 V6?
Post by: perfferle on 24 February 2008, 21:16:58
Hello,
Can anyone recommend the correct 'new' model Bosch spark plugs for my Omega. The manual calls for Bosch FLR 8 LD+U however I am being told that a 'super 4' is now the correct plug - Is this really the case?

Thanks, P
Title: Re: Spark Plugs for 2.5 V6?
Post by: Marks DTM Calib on 24 February 2008, 21:39:45
No

The best source of plugs is Vx, they are excellent quality and the price is good (even better on trade club!)

I have commented before on my dislike of the quad electrode plugs as they do nothing more than extend the theoretical life of the plug but, they can also shield the spark more which is not good.
Title: Re: Spark Plugs for 2.5 V6?
Post by: perfferle on 24 February 2008, 21:46:47
Thanks for clearing that up for me. Will call Vx tomorrow.
Kind regards,
P.
Title: Re: Spark Plugs for 2.5 V6?
Post by: Markjay on 24 February 2008, 21:51:31
Vx plugs are made by Bosch (and carry the Bosch P/N stamped on the side), yet they are cheaper to buy through Vx than buying the Bosch-branded ones....


Older cars had the 2-electrode plugs, the newer ones have the 4-electrode plug. According to vx, 2-electrode plugs are good for 40k, 4-electrode plugs are good for 80k. But since it is not really a good idea to leave the plugs in the engine for 80k anyway, it really does not matter what you go for.... in fact Mark DTM even concluded that the 4-elctrode are potentially worse than the 2-electrode.

So in general, if your car came originally with 2-electrode, go for 2-electrode Vx plugs. If it came with 4-electrodes, go for that... either way the plugs are £2-£3 each from Vx.

Title: Re: Spark Plugs for 2.5 V6?
Post by: duggs on 24 February 2008, 22:12:41
Buying them is easy.....trying to install the buggers is where the fun starts. I got 6 VX plugs and they're still sitting in the garage.
SOOOOOOOOO many things need moving out of the way before you can get at the holes...I gave up and they'll await the next full service by my mechanic bods.
Title: Re: Spark Plugs for 2.5 V6?
Post by: RolandL on 24 February 2008, 22:25:31
Quote
Buying them is easy.....trying to install the buggers is where the fun starts. I got 6 VX plugs and they're still sitting in the garage.
SOOOOOOOOO many things need moving out of the way before you can get at the holes...I gave up and they'll await the next full service by my mechanic bods.


Same here, that's why tomorrow I shall be, changing aux belt, cleaning breather system and as everything is out of the way, changing the plugs  ;D

oh yes, and doing an oil filter change with a difference  :y

I'm going to be veeeeery busy
Title: Re: Spark Plugs for 2.5 V6?
Post by: Andy B on 24 February 2008, 23:20:34
I don't suppose either of you two have had a 24 valve Senator/Carlton then?  ;) I found the Omega a piece of p*** !  :y  :y  :y
Title: Re: Spark Plugs for 2.5 V6?
Post by: perfferle on 25 February 2008, 07:45:37
Thanks for the comments guys,
The next thing I will be looking for is THE guide to replacing the plugs AND cleaning the breather system for the first time in about 100,000Miles!. My rocker cover gaskets are shagged and now I know what caused it, thanks to this great forum.
Keep up the great work! :y

Thanks again and kind regards,
P
Title: Re: Spark Plugs for 2.5 V6?
Post by: Dazzler on 25 February 2008, 11:05:02
Quote
I don't suppose either of you two have had a 24 valve Senator/Carlton then?  ;) I found the Omega a piece of p*** !  :y  :y  :y
I had a GSI 24v, not to bad a job on them ;)
Title: Re: Spark Plugs for 2.5 V6?
Post by: Andy B on 25 February 2008, 11:38:57
Quote
Quote
I don't suppose either of you two have had a 24 valve Senator/Carlton then?  ;) I found the Omega a piece of p*** !  :y  :y  :y
I had a GSI 24v, not to bad a job on them ;)
My brother used to have a Mitsubishi FTO. The front 3 plugs were a doddle, the 3 at the back ...... you needed to book the week ff work to do them.  :o  ;)
Title: Re: Spark Plugs for 2.5 V6?
Post by: TheBoy on 25 February 2008, 12:01:02
Quote
Quote
Quote
I don't suppose either of you two have had a 24 valve Senator/Carlton then?  ;) I found the Omega a piece of p*** !  :y  :y  :y
I had a GSI 24v, not to bad a job on them ;)
My brother used to have a Mitsubishi FTO. The front 3 plugs were a doddle, the 3 at the back ...... you needed to book the week ff work to do them.  :o  ;)
Merc A class is an engine out job to change plugs....
Title: Re: Spark Plugs for 2.5 V6?
Post by: Andy B on 25 February 2008, 12:05:50
Quote
......
Merc A class is an engine out job to change plugs....

FFS! :-? No wonder they make plugs that (allegedly) last 80k.
Title: Re: Spark Plugs for 2.5 V6?
Post by: Kevin Wood on 25 February 2008, 13:22:06
Quote
Merc A class is an engine out job to change plugs....

Guess they figured it would have been put on its' roof by 80K  ;D

Kevin
Title: Re: Spark Plugs for 2.5 V6?
Post by: Andy B on 25 February 2008, 16:26:05
Quote
Quote
Merc A class is an engine out job to change plugs....

Guess they figured it would have been put on its' roof by 80K  ;D

Kevin

 ;D  ;D  ;D  ;D Only in the presence of an Elk! :y
Title: Re: Spark Plugs for 2.5 V6?
Post by: Marks DTM Calib on 25 February 2008, 17:33:15
C25XE (Cavalier/Calibra) is an inlet manifold off job.....
Title: Re: Spark Plugs for 2.5 V6?
Post by: albitz on 25 February 2008, 17:36:44
Quote
Quote
Quote
Quote
I don't suppose either of you two have had a 24 valve Senator/Carlton then?  ;) I found the Omega a piece of p*** !  :y  :y  :y
I had a GSI 24v, not to bad a job on them ;)
My brother used to have a Mitsubishi FTO. The front 3 plugs were a doddle, the 3 at the back ...... you needed to book the week ff work to do them.  :o  ;)
Merc A class is an engine out job to change plugs....
you cannot be serious? :o :o
Title: Re: Spark Plugs for 2.5 V6?
Post by: Richard A on 25 February 2008, 19:38:20
Fitted 6 NGK 'Iridium' spark plugs April '07 - 20k miles ago after all sorts of 'high load misfire problems', also suffered from a number of duff GM plugs. The 'Iridium' plugs have fired without missing a single beat, even with three plug wells full of oil for 2 months, (new gaskets fitted now). Best price £6 each but worth it and used in conjunction with Shell Super V the difference is impressive  ;)
regards
richard
Title: Re: Spark Plugs for 2.5 V6?
Post by: Markjay on 25 February 2008, 23:30:06
Quote
Quote
......
Merc A class is an engine out job to change plugs....

FFS! :-? No wonder they make plugs that (allegedly) last 80k.


BTW so is the Previa.... the original NGK Iridium plugs are suppose to be good fro 63k miles (100k km).... And from what I hear also the Mitsubishi FTO. No wonder these models never became popular with fleet buyers....


Title: Re: Spark Plugs for 2.5 V6?
Post by: Markjay on 25 February 2008, 23:32:58
Ahhmm....

http://www.omegaowners.com/forum/YaBB.pl?num=1169337137

 ;)

Title: Re: Spark Plugs for 2.5 V6?
Post by: Entwood on 25 February 2008, 23:48:21
Bad throat ??    ;D ;D ;D ;D :y :y
Title: Re: Spark Plugs for 2.5 V6?
Post by: Markjay on 26 February 2008, 00:22:12
Quote
Bad throat ??    ;D ;D ;D ;D :y :y

Naah... just being... modest....  :-[


 ;D