[N54_wagz]

I cannot figure out the issue, the car used to misfire on cold start but the plugs are only 3k miles old, I’ve tried coil packs, and I’ve replaced the injectors. Which replacing them seemed to get rid of the cold start misfire but under casual driving the codes come back but under hard driving there’s no issues, I’m tempted to throw new plugs in it.. again.

( this is also a “new” engine that I’ve refreshed )

[e90_austin]

Did this issue happen before you replaced the plugs?

[N54_wagz]

Originally Posted by e90_austin

Did this issue happen before you replaced the plugs?

I’ve only put 3k miles on the engine since I installed it refurbished it, so there’s no history before these plugs

[southshoreguy]

I had this issue and replacing the seals and decouplers on the fuel injectors of the miss firing cylinders resolved it.

[Wolf 335]

What spark plaugs, what coils and what injectors did you use?

I hope nothing is off ebay and/or used.

[N54_wagz]

Originally Posted by Wolf 335

What spark plaugs, what coils and what injectors did you use?

I hope nothing is off ebay and/or used.

Using new bosh plugs which I feel is the problem, and OEM coil packs that are verified good, and new index 12 injectors

[Wolf 335]

Originally Posted by N54_wagz

Using new bosh plugs which I feel is the problem, and OEM coil packs that are verified good, and new index 12 injectors

Where did you buy the plugs and injectors from?

[N54_wagz]

Originally Posted by Wolf 335

Where did you buy the plugs and injectors from?

I got them from EAG

[e90_austin]

EAG as in European Auto Garage in Knoxville?!

[N54_wagz]

Originally Posted by e90_austin

EAG as in European Auto Garage in Knoxville?!

EAG is Enthusiast Auto Group in the Cincinnati area of Ohio