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Old 04-07-2005   #1
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Spark Plugs/Cylinder Mis-firing

Hey I have a 1.1 Cinq Sporting. At the moment I am mis firing on a Cylinder. I have tried everything to stop it, replaced the spark leads, and fed the engine fuel injector cleaner. However the cylinder still mis-fires. A friend told me that it could be the spark plugs. When I switch the engine on a light on the dashboard that looks like a spark plug lights up for about three seconds and goes off after all the other display lights? Does this mean the car needs new spark plugs as i do not have the car's manual, and would this be the mis-firing problem? Please HELP!!!!!
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Old 04-07-2005   #2
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Re: Spark Plugs/Cylinder Mis-firing

i think the light ur talkin about is the washers light
try new plugs in it
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Old 04-07-2005   #3
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Re: Spark Plugs/Cylinder Mis-firing

You'll find it maybe the injector light. Cento's don't have a "washers light".

T'is normal for the light to go off, try swapping no 1 plug lead to a different plug and see if it misses there, this will diagnose dodgy leads.

Liam
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Old 05-07-2005   #4
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Re: Spark Plugs/Cylinder Mis-firing

same happened wid me. it was a coil pack had went. cost me 15 from scrap yard. it is wot the HT leads are connected to. Not the spark plugs.
Zoe
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Old 05-07-2005   #5
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Re: Spark Plugs/Cylinder Mis-firing

Tis definately the ECU Warning light. It comes on for 4 secs at startup then goes out.

Odds are the coil pack is knackered. If the light stays on, Id fcheck all the HT connections (hold the plug lead near the block with some INSULATED pliers - trust me, 10kV in the arm is a bit odd.., - and look for a spark.). Check all plugs work, then try swapping things over (only whilst cranking the engine, cos it wont idle on 2 cylinders!)
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Old 05-07-2005   #6
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Re: Spark Plugs/Cylinder Mis-firing

Cheers everyone thanks for all the good advice. Is the coil pack an ignition coil on my cinq?
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Old 06-07-2005   #7
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Re: Spark Plugs/Cylinder Mis-firing

In theory yes but it's a coil for two plugs set-up, i.e. 4 plugs equals two coils.

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Old 07-07-2005   #8
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Re: Spark Plugs/Cylinder Mis-firing

I have bought a Lucas ignition coil, is it just a case of taking out the old ignition coil and replacing it with the new, or is there a specific way of replacing the coil?

thanks James
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Old 07-07-2005   #9
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Re: Spark Plugs/Cylinder Mis-firing

I hope the coil you have bought is specific for the cento. You can't fit a standard ignition coil.

Cheers

D
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Old 07-07-2005   #10
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Re: Spark Plugs/Cylinder Mis-firing

yes i went to halfords and got the coil that is specifically used in the cinq sporting 1.1
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Old 07-07-2005   #11
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Re: Spark Plugs/Cylinder Mis-firing

Its replacement is quite straightforward, it will all become apparent when you take the cover off.

Cheers

D
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Old 07-07-2005   #12
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Re: Spark Plugs/Cylinder Mis-firing

i replaced one of the ignition coils however i tried the new one in both places of the old ignition coils, however the cylinder still mis-fires. Somebody told me that it could be the amplifier? what the hell is that?
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Old 07-07-2005   #13
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Re: Spark Plugs/Cylinder Mis-firing

Did you actually check/change the plugs?

Cheers

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Old 07-07-2005   #14
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Re: Spark Plugs/Cylinder Mis-firing

ignition amplifer? you only get them on unos don't you?
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Old 08-07-2005   #15
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Re: Spark Plugs/Cylinder Mis-firing

I changed the plugs in april so they aren't that old believe or not. So i dont know whats wrong with it?
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