Mis fire on cold start

[dnic87]

Hi guys,  New to this forum..I have a 68 plate 1.6 tdi manual octavia. When I start the car in the morning it Mis fires for a few minutes before settling down. After that I can start the car at anytime and it just seems normal. Surely someone can help me . Thanks 

[Ecomatt]

Could simply be the glowplugs are not heating up correctly and on the way out.

[dnic87]

I wondered about that. Just baffled as no lights on dash etc. Car has 56k miles. Serviced with genuine parts every 10k 

 

 

[ords]

How quickly does it start after being left overnight? If it takes a long time that could point to the glowplugs.

[dnic87]

It fires up straight away but just rough

[Ecomatt]

3 hours ago, dnic87 said:

I wondered about that. Just baffled as no lights on dash etc. Car has 56k miles. Serviced with genuine parts every 10k 

 

 

A faulty Glow plug may not always raise a eml to begin with. You can check the resistance of the plugs on a multi meter to see if they are at fault.

[ords]

If it's firing up straight away it would seem they're ok.

[BogdanB]

My car had problems starting up due to a worn out battery.

[dnic87]

The car fires up fine, it just then mis fires for a few mins, I could drive 200yds and its fine. And then when it's warm you'd never know it had mis fired. No lights on dash and idle is steady about 800

[dnic87]

***UPDATE***

 

had the car put on the computer and it brought up a temporary fault in nox sensor 2. Put a bottle of vw additive in and fault appears to have rectified