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Author Sky high emissions?
Archie
Organiser: Scotland
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Registered: 18th Dec 07
Location: South Ayrshire
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10th Nov 11 at 17:29   View User's Profile U2U Member Reply With Quote
Took my old mans Mondeo for an MOT last week.
Failed on emissions, HC reading being 1198ppm. Limit being 200ppm.

Never seen an emmisions reading so bad in all my time as a mechanic, and the car isnt throwing any fault codes?


Have cleaned EGR, and have an engine flush and service kit here to go on it as well whilst i'm working on it.


Anyone had this before, or any insight as to what could cause mad emmisions.

Thinking the cat may be fucked as well...

[Edited on 10-11-2011 by Archie]
LeeM
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Registered: 26th Sep 05
Location: Liverpool
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10th Nov 11 at 17:39   View User's Profile U2U Member Reply With Quote
ignition problem, ie; unburnt fuel making it into the exhaust gas
Archie
Organiser: Scotland
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Registered: 18th Dec 07
Location: South Ayrshire
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10th Nov 11 at 17:53   View User's Profile U2U Member Reply With Quote
Surely it would miss and show some form of fault code if this was the case?
AlexW
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Registered: 25th Oct 08
Location: Essex
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10th Nov 11 at 17:53   View User's Profile U2U Member Reply With Quote
Does it actually run alright?

I'd have a wild guess at cat but sounds like its either well fucked or its not just that. Don't know what else.
LeeM
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Registered: 26th Sep 05
Location: Liverpool
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10th Nov 11 at 17:55   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Archie
Surely it would miss and show some form of fault code if this was the case?


possibly not if your plugs are goosed and theyre sparking weakly, enough to keep it running but not enough to burn a full cylinder
Archie
Organiser: Scotland
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Registered: 18th Dec 07
Location: South Ayrshire
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10th Nov 11 at 18:24   View User's Profile U2U Member Reply With Quote
Alex - Runs and drives alright.

Lee - Got plugs there as part of the kit so think i'll just clean the EGR, do the service and take it from there.
Jed D
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Registered: 15th Mar 11
Location: Durham
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11th Nov 11 at 08:36   View User's Profile U2U Member Reply With Quote
not take it to a friendly tester :wink:, i mean if its running fine there's not much point in splashing out for a new cat and all the rest when you could pay £20 extra or whatever it may be and have him stick a different car on the emissions
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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11th Nov 11 at 09:30   View Garage View User's Profile U2U Member Reply With Quote
loads of things imo, lambda, coil pack, anything that owuld cause it to misfire, doesnt always leave a fault code, seen it happen to mine, dodgy coil pack, no fault code
pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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11th Nov 11 at 10:09   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Jed D
not take it to a friendly tester :wink:, i mean if its running fine there's not much point in splashing out for a new cat and all the rest when you could pay £20 extra or whatever it may be and have him stick a different car on the emissions


Apart from the fact it's clearly got an issue fueling issue?!
Archie
Organiser: Scotland
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Registered: 18th Dec 07
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11th Nov 11 at 19:17   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Jed D
not take it to a friendly tester :wink:, i mean if its running fine there's not much point in splashing out for a new cat and all the rest when you could pay £20 extra or whatever it may be and have him stick a different car on the emissions


Theres certain things you can turn a blind eye to but even the smell of it is terrible nevermind the facts on paper, i wouldnt expect even my friendly tester to pass it.

Plus its my old mans motor, and i'd rather his car was spot on.
Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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11th Nov 11 at 19:24   View User's Profile U2U Member Reply With Quote
Headgasket
Archie
Organiser: Scotland
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Registered: 18th Dec 07
Location: South Ayrshire
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11th Nov 11 at 19:34   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Ojc
Headgasket



Doesnt use water/oil, good compression.
Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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11th Nov 11 at 21:11   View User's Profile U2U Member Reply With Quote
Mpg any worse? Black smoke? If so, leaky injector?
Jed D
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Registered: 15th Mar 11
Location: Durham
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11th Nov 11 at 21:16   View User's Profile U2U Member Reply With Quote
daymoon
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Registered: 1st Aug 08
Location: Selby, North Yorkshire
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11th Nov 11 at 21:39   View Garage View User's Profile U2U Member Reply With Quote
plugs or coil pack... service it and check emissions again.
Could also be Lambda.

[Edited on 11-11-2011 by daymoon]
gazza808
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Registered: 30th Jun 08
Location: Peterborough
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11th Nov 11 at 23:36   View User's Profile U2U Member Reply With Quote
Is it a diesel?
daymoon
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Registered: 1st Aug 08
Location: Selby, North Yorkshire
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11th Nov 11 at 23:40   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by gazza808
Is it a diesel?


Didn't realise diesels had spark plugs.
gazza808
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Registered: 30th Jun 08
Location: Peterborough
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12th Nov 11 at 01:15   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by daymoon
quote:
Originally posted by gazza808
Is it a diesel?


Didn't realise diesels had spark plugs.


have a reread then come back to me where it says spark plugs?

it says plugs? could have been glow plugs

i just skimmed the thread.
shane_o
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Registered: 15th Sep 05
Location: Yeovil, Somerset
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12th Nov 11 at 11:57   View User's Profile U2U Member Reply With Quote
air leak or a temp sensor like coolant etc.

 
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