Engine misfiring

[Gworld247]

Hi, last week I put some redex into the tank when I filled up with diesel, I may have accidentally used to much, it was juddering a bit but I just put it down to the redex, however iv used that tank now and filled up again thinking that would fix it, but it's still happening, most noticeably when I first start it, it's ruff lumpy tick over and can feel engine struggling, after a quick blast it seems to settle down but still feel it every now and then, thought it might be one of the injectors as have read about problems with wiring on here, any ideas or suggestions???

Just to add, iv recently changed boost pipes egr and boost control sensor.

Thanks

[Critch]

What colour plugs are on injectors?

[Ben50n]

Check and cleam out the EGR etc

[Gworld247]

As I said in the post egr has recently been changed for new. Anyone else?

[Gworld247]

What colour plugs are on injectors?

Il have to check in the morning, what will this tell me? Is it to identify plugs with faulty wiring?

[Gworld247]

Bump

[Das]

Il have to check in the morning, what will this tell me? Is it to identify plugs with faulty wiring?

Yes, there is an issue with the 3rd injector wiring on some 1.9's that causes misfiring/juddering.

http://www.vectra-c.com/forum/showth...njector-wiring