hi guys my car is misfiring when cold.

i have changed..

-Lambda sensor
-turbo intake pipe
-coolant temp sonsor

but i still have the same problem.

any ideas Thanks david

 

Sounds obvious but have you had the plugs out and cleaned them and checked the gaps? I had a similar problem, I changed my NGK PFR6B's to PFR7B's and gaped them to 0.65 and my problem has gone altogether.

 

i changed the plugs last month and they were all 0.7mm.
it was running lumpy last week so i checked it over and noticed a split in the turbo intake pipe so i changed it and its running fine apart from when its cold and its got the miss fire.

Thanks

 

i noticed that it only really misfires when boosting otherwise its ok just a bit lumpy.

any ideas

David

 

Coilpacks ?
Bad batch of fuel ?

 

i was running on tesco 99 or v power but then i had to fill up a couple of time with texaco super.

also 1 of the coil pack does have a couple of what look like scratches but mabe they are small cracks, but i have a spear one and it didnt seem to cure it..

david