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121

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 21:36:25 »

When i took my car to Captain Zok at easter with my problem his son did a dignostic check & couldn't find any faults.
He did find that spark plug no.6 was cracked & getting an oil bath!
The Capatain said that the cats where knackered but 1st port of call would be to change the plugs & HT leads which as previously mentioned have now been done (y/day one of the brand new plugs - one week old, was a different colour & replaced but didn't help the problem!
Could the knackered cats be the cause of the misfiring/stuttering  :-? :-? :-?

122

Omega General Help / Re: Exhaust Manifold Gasket - missfiring/stuttering!!!

« on: 04 May 2010, 14:29:39 »

Have read somewhere on this site that the MAF sensor is 2nd down on the big pipe coming from the air box (hope that's correct?)
Unplugged it & couldn't start the engine! Must be doing something wrong!! 

123

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 14:24:27 »

Heres a pic I marked the location of the MAF sensor .


Note that this is on a Vectra B intake but it should give you an idea of what to look for 

Thanks for that but its different on the Omega 

124

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 11:45:24 »

Do you know if the crank sensor he fitted was a genuine one or not?[/quote]
Said he got a new one which would have been genuine BUT knowing him he might have got one from the scrap yard!
Having said that if this crank sensor is no good wouldn't it show up on a tech 2 test?

125

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 11:31:49 »

How do i unplug Maf sensor & where do i find it?
Looked on Maintenance Guide Index but can't find an entry  :-?

126

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 11:24:34 »

You say the cam sensor was replaced (strange), do you mean the crank sensor?

Sorry you are dead right i mean the crank sensor code 31 

Code 31 is normal when the engine is not running, code 19 indicates crank sensor failure.

Hope you did not replace it based on 31 code!

[/highlight]
YES!!!! My mechanic replaced it  :-? not knowing that on the tech 2 test code 31 shows untill the engine is fired up - when i told him he didn't charge me for his embarrasment 

I would change your mechanic 

Hahaha have had ''3'' different people look at this car - thinking of putting it on YOU-TUBE  !!!!

127

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 11:16:19 »

You say the cam sensor was replaced (strange), do you mean the crank sensor?

Sorry you are dead right i mean the crank sensor code 31 

Code 31 is normal when the engine is not running, code 19 indicates crank sensor failure.

Hope you did not replace it based on 31 code!

[/highlight]
YES!!!! My mechanic replaced it  :-? not knowing that on the tech 2 test code 31 shows untill the engine is fired up - when i told him he didn't charge me for his embarrasment 

128

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 11:12:39 »

Also had quite a random missfire when starting the car when it was still hot , turned out to be the MAF sensor as soon as I unplugged it the car ran fine

My misfire is there all the time as soon as i accelerate 

Mine had the missfire/stuttering from 1800-2700 rpm also with no eml light or codes stored . Just unplug it and go for a test drive .

[/highlight]
How do i do that?

129

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 11:10:16 »

You say the cam sensor was replaced (strange), do you mean the crank sensor?

Sorry ur dead right i mean the crank sensor code 31 

130

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 10:30:18 »

Also had quite a random missfire when starting the car when it was still hot , turned out to be the MAF sensor as soon as I unplugged it the car ran fine

My misfire is there all the time as soon as i accelerate 

131

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 10:27:38 »

Cheers for the message Pete & the quote
All i can say is J-E-S-U-S didn't realise it was so expensive  !!!!
Could the misfire be caused by the Exhaust Manifold Gasket leaking???

I would say no and given what your mechanics has changed....its time for a new mechanic!

[/highlight]
Trouble is i have a car that's misfiring & 3 different people don't know what the problem is & can only guess what it might be - plugs? renewed, ht leads? renewed, compression test? done, fuel filter? done, loose lead on coil pack? nope, paper clip test? done with nothing showing & the list goes on!!!
If it is the Exhaust Manifold Gasket then at an estimated £170 i'm f**ked cos not got a pot to p**s in!!!!
Maybe some-one on this site has had the same problem & could give me advise as i'm not mechanically minded 

132

Omega General Help / Re: Exhaust Manifold Gasket

« on: 04 May 2010, 09:47:07 »

Cheers for the message Pete & the quote
All i can say is J-E-S-U-S didn't realise it was so expensive  !!!!
Could the misfire be caused by the Exhaust Manifold Gasket leaking???

133

Omega General Help / Exhaust Manifold Gasket

« on: 04 May 2010, 09:19:50 »

Morning all 
Have posted a few times about my facelift 2.5 elite with a misfire.
Just to re-cap -:
NOTHING showing on paper clip test or Tech 2
Coil pack replaced
Cam shaft sensor replaced (mechanic said fault code shown on tech 2 BUT didn't realise that the engine had to be running for it to clear!)
New spark plugs replaced
New HT Leads replaced (correctly fitted onto coil pack & no leads loose)
New fuel filter fitted
Compression test done y/day but nothing found!
Have now been advised that it could well be that the Exhaust Manifold Gasket could be the problem OR injectors (although 2 lots of cleaner where put in a couple of months ago when the problem first happened).
The exhaust does sound as if its blowing & i just wanted to ask anyone out there if they think that this could well be the cause of the bad misfire & if so is it an expensive job to do (i know the gaskets are only a few quid on ebay) labour wise?
I'm at the end of my tether with this & it's cost me a small fortune up to know which has completely made me skint!!
PLEASE HELP!!!!

134

Omega General Help / Re: What have i unplugged ??!!??

« on: 05 May 2010, 18:16:06 »

When Captain Zok's son had a look No. 6 plug was cracked & swimming in oil 
One of the new plugs was a different colour (not sure which plug) & the car has only travelled a mile or so - if its the rocker cover then could this be the cause of the misfire/stuttering  :-?
So far i've had 3 people with 3 different theories -
1. Exhaust manifold gasket
2. Knackered cats
3. Leaking rocker covers
I'll take a poke in the dark & based on the different coloured plug i'd say no. 3  :-/ :-?
Anyone want to participate in this exciting guessing game 

135

Omega General Help / Re: What have i unplugged ??!!??

« on: 04 May 2010, 21:26:09 »

Hi, I know you changed the leads and plugs but could be worth rechecking, you seem to be having exactly the same problem as i did recently, check if one of the plugs is a different colour to the others ? Have a look here :

http://www.omegaowners.com/forum/YaBB.pl?num=1272097222

 

Aha  Yesterday my mechanic friend checked the dis pack for any loose leads but fine. Did a compression test & everything fine. Changed the HT Leads & lastly checked the 'new' spark plugs (one week old) & found that one of the plugs was a different colour so changed it!! But the misfire/stuttering is still there 
When i took the car to Captain Zok at easter he said the cats were knackered but first port of call would be to change the plugs (no.6 was split) & HT Leads.
Could the problem relate to the cats  :-?