hi i have a punto sx 75 when the engines cold it will only idle at around 500rpm and the car judders alot when it idles it also cuts out if i dont rev it a bit, when the engine warms up everything is fine and it idles ok, this has been going on for about 10 months ever since i replaced the head gasket not sure if it was like this before as i was given the car broken and it had been sitting on the drive for about 2 years.
There is no loss of power or anything else out of the ordinary with the car, does anyone have any ideas?

Might be worth a wee recheck of the timing.

Other than that, possible coil pack breaking down when cold.

Cheers

SPD

Clean the throttle body, takes 10-15 min, should be fine

Also look for an air leak around the throttle body. Tramp air will make it run weak which might be more noticeable when its cold - in effect the "choke" isnt working properly.

bredsticz said:

Clean the throttle body, takes 10-15 min, should be fine

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Wouldn't the throttle body being dirty still affect the idleing when it is hot aswell, would it affect the choke at all, thanks for the help

Nope I had the same problem, not 100% sure why it doesn't effect it when hot but it cured it for me. Only started again when i noticed oil being sucked into my throttle body. But thats because it needs a new engine My other 2 puntos have good engines!

bredsticz said:

Nope I had the same problem, not 100% sure why it doesn't effect it when hot but it cured it for me. Only started again when i noticed oil being sucked into my throttle body. But thats because it needs a new engine My other 2 puntos have good engines!

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Awesome i'll have a go at cleaning it tomorrow then, one more question, what did you use to clean it, white spirit? something similar? i dont want to go damaging anything, this is the only problem i have left with the engine then it will be working perfectly lol

Use carb cleaner -- about £1 from your local pound shop.

But do check the timing, look for blue flash evidence of misfires (in the dark).

Let us know how you get on, also after cleaning just give the valve a bit of a spray with WD40. Keeps it going nicely Hell give everything a spray of WD40!

bredsticz said:

Let us know how you get on, also after cleaning just give the valve a bit of a spray with WD40. Keeps it going nicely Hell give everything a spray of WD40!

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Thank you sooooo much bredsticz, it worked perfectly, car idles fine now when its cold, one quick question, this isnt to do with the engine, but instead of making a new thread thought you or someone else who looks might have an idea, if i fit alloy wheels onto my punto do i have to claim them on insurance and will it go up by much if i do, i guess it would depend on the price i payed for them wouldn't it.

You need to inform your insurance -- it probably won't make that much difference.

It will go up a bit but my insurance don't know about mine (shhh)
Also remember the 'Thanks' button