problem with missfiring i think.

[mukkyman]

I posted this http://www.cliosport.net/forum/showthread.php?t=204181 the other week.

The problem has not happend since then but now i have another problem.
when idling for a few minutes reving around 900rpm the exhaust is kind of popping. Sounds nice but can't be good . Is that a missfire?

My garage is fitting a new Map sensor for me tomorrow but I dont think that will fix it.

What else could it be? Im thinking the coils myself.
Is there anything simple I could look out for before I take it to the garage?

cheers again.

 

[Ryan k]

Coil

 

[len_beach]

The coil pack distributes the 'sparks' to each cylinder. It could be that it is under sparking a cyliner causing a misfire. It definately sounds like an electronic issue rather than mechanical.

 

[mukkyman]

Its only seems to be at idle tho, How much im i looking at to change the coils?
forgot to say the other problem I had the diag machine reported the map sensor at fault, could a map sensor cause a missfire?

 

[Ryan k]

£35 for coil is it slower on acceleration

 

[mukkyman]

to be honest it seems to be fine, today i even managed to go past 100mph on motorway because i wasnt paying attention to the speedo and this in a 1.2 haha.

 

[len_beach]

In a word, yes.

 

[Ryan k]

Well that dont help if its fine

 

[len_beach]

But electronic components can be temperamental, they can be fine one day and terrible the next without warning.

 

[mukkyman]

I didnt notice much difference in speed, it is a slow car anyways.:S

 

[Ryan k]

Don't i no it lol dam coils on 1.4 are rubbish i should carry 1 with me really had 4 in 8 months

 

[Ryan k]

1.2 are pritty nippy will out run a 182 any day :nono:

 

[len_beach]

In the twisties as well Ryan?

 

[Ryan k]

In the twisties as well Ryan?

LMAO ye, do find them nice and easy to drive though

 

[mukkyman]

anything else i should look out for?

 

[Ryan k]

Make sure your mounts are OK run your engine with bonnet up and check to see if it sounds normal

 

[mukkyman]

engine mounts? its that 35 quid per coil?

 

[Ryan k]

Sure is mate, dont sound like a mount problem so forget that

 

[lemonnobby]

No ryan is comparing his engine to yours mate incorrct price and 1.2 s only have one big coil pack.

 

[mukkyman]

hehe thanks mate, is there a easy way to check which cylinder is missfiring? ie pulling spark plugs out one at a time?

 

[Ryan k]

No ryan is comparing his engine to yours mate incorrct price and 1.2 s only have one big coil pack.

Do they sorry i thought 1.2 1.4 and 1.6 had individal :S

 

[lemonnobby]

you can pull the leads up on at a time from off the top of the spark plugs you will hear it jumping across be care full with the leads though mate pull the plastic and the lead itself.

1.4 and 16 16v do mate 1.2s have a coil pack

 

[Ryan k]

If you take you spark plugs out you will find them wet if its misfiring