Archie
Organiser: Scotland Premium Member
Registered: 18th Dec 07
Location: South Ayrshire
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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]
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LeeM
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Registered: 26th Sep 05
Location: Liverpool
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ignition problem, ie; unburnt fuel making it into the exhaust gas
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Archie
Organiser: Scotland Premium Member
Registered: 18th Dec 07
Location: South Ayrshire
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Surely it would miss and show some form of fault code if this was the case?
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AlexW
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Registered: 25th Oct 08
Location: Essex
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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.
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LeeM
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Registered: 26th Sep 05
Location: Liverpool
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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
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Archie
Organiser: Scotland Premium Member
Registered: 18th Dec 07
Location: South Ayrshire
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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.
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Jed D
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Registered: 15th Mar 11
Location: Durham
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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
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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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
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pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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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?!
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Archie
Organiser: Scotland Premium Member
Registered: 18th Dec 07
Location: South Ayrshire
User status: Offline
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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.
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Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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Headgasket
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Archie
Organiser: Scotland Premium Member
Registered: 18th Dec 07
Location: South Ayrshire
User status: Offline
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quote: Originally posted by Ojc
Headgasket
Doesnt use water/oil, good compression.
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Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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Mpg any worse? Black smoke? If so, leaky injector?
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Jed D
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Registered: 15th Mar 11
Location: Durham
User status: Offline
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daymoon
Premium Member
Registered: 1st Aug 08
Location: Selby, North Yorkshire
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plugs or coil pack... service it and check emissions again.
Could also be Lambda.
[Edited on 11-11-2011 by daymoon]
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gazza808
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Registered: 30th Jun 08
Location: Peterborough
User status: Offline
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Is it a diesel?
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daymoon
Premium Member
Registered: 1st Aug 08
Location: Selby, North Yorkshire
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quote: Originally posted by gazza808
Is it a diesel?
Didn't realise diesels had spark plugs.
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gazza808
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Registered: 30th Jun 08
Location: Peterborough
User status: Offline
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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.
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shane_o
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Registered: 15th Sep 05
Location: Yeovil, Somerset
User status: Offline
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air leak or a temp sensor like coolant etc.
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