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Author Topic: High hydrocarbons and carbon monoxide values  (Read 1739 times)

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Smolle94

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High hydrocarbons and carbon monoxide values
« on: 27 January 2017, 17:54:01 »

Hello,

Omega 2.0 16v ecotech -98

Bought a omega recently and had mot yesterday.
Co 1,6 (0,5)
Co 2500rpm 1,2 (0,3)
Hc 175 (100)
Oxygen/lambda sensor 1,02(0,97-1,03
(Values in parantheses)
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Chazza12

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Re: High hydrocarbons and carbon monoxide values
« Reply #1 on: 27 January 2017, 20:33:36 »

when was the cat last changed ? any engine problems ?
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Lazydocker

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Re: High hydrocarbons and carbon monoxide values
« Reply #2 on: 28 January 2017, 13:27:54 »

Check for misfires first. If all is good, give it a good service, some good fuel (or a decent additive) and an Italian tune up :D
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Whatever it is... I didn't do it

Kevin Wood

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Re: High hydrocarbons and carbon monoxide values
« Reply #3 on: 28 January 2017, 20:58:07 »

Also check it's getting up to normal running temperature. :y
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Smolle94

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Re: High hydrocarbons and carbon monoxide values
« Reply #4 on: 29 January 2017, 18:29:41 »

It's running at about 90* but have some problem to keep the heat up on the highway.
When I "floor it" it smells like oil in the car.
Did a service yesterday. No difference...
I'll have no idé when the cat was change.
Italian tune up?
Sorry if bad english, not my first language :)
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Doctor Gollum

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Re: High hydrocarbons and carbon monoxide values
« Reply #5 on: 29 January 2017, 18:37:33 »

Fill it with shell optimax and two cans of fuel treatment, Wynns works well if available there...

Then drive it hard until the fuel is gone...

Repeat then retest :y
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Lazydocker

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Re: High hydrocarbons and carbon monoxide values
« Reply #6 on: 29 January 2017, 19:40:16 »

Sorry, didn't spot you were from Sweden.

Full with premium fuel, add some quality fuel treatment and then take it for a good, hard drive.
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Kevin Wood

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Re: High hydrocarbons and carbon monoxide values
« Reply #7 on: 29 January 2017, 23:51:17 »

I don't suppose it's suffering from a cracked exhaust manifold as many of the 4 pots do? Any sign of an exhaust blow from it when started from cold?
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Smolle94

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Re: High hydrocarbons and carbon monoxide values
« Reply #8 on: 02 February 2017, 10:57:07 »

Didn't find any cracks in the exhaust, but did find some oil in the "pipe" thats closet to the cabin.
I think one or two of the valve "stering" is broken.  :(
So the engine will find a new life in the scrapyard.
A new hart will be donated from a Saab b204/205 hybrid  :)
The gearbox will be changed to a r25/28 or a r28
Do you recommend any differential(LSD)
Thanks for the help  :y
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