[drocksmooth]

Brought my car into the dealership a couple weeks ago because my car was idling roughly. The dealership diagnosed a bad ignition coil and recommended I change all six. Well the warranty would only pay for the bad one, so I decided to change the other 5 myself and change the spark plugs as well. I bought Bosch replacement N54 spark plugs and the special socket from Burger Motorsports and six ignition coils from Amazon: https://www.amazon.com/Bosch-0221504.../dp/B00BJP89US

I installed the all yesterday. Based upon my research I did not use dielectric grease, but I did put a very small amount of anti seize on the spark plug threads. I took a test drive after I was done and it ran great! However, when I started it up today, it was sputtering and eventually the SES light came on. I went back into the engine to check on the spark plugs and found that the tips on the spark plugs in the 1st, 3rd, 5th, and 6th cylinders were all burnt up and looked like there was oil on them. They are in the first 3 pics below. But the spark plugs in the 2nd and 4th cylinder was perfectly normal (last pic below). Can anyone explain what happened? Are the spark plugs or the ignition coils bad? Or both? I need to get my car back on the road, so any advice would be appreciated. I'm assuming I'll have to at least replace the 4 that are all burned up, but I don't want this happen again. Thanks in advance!

[CanadianTSi]

Looks like you've got leaking injectors.

[335is-dct]

Do they smell of oil or fuel?

[drocksmooth]

Originally Posted by CanadianTSi

Looks like you've got leaking injectors.

Really? I'm wondering why it happened right after I changed the plugs and coils though?

[drocksmooth]

Originally Posted by 335is-dct

Do they smell of oil or fuel?

It smells like fuel.

[DR-JEKL]

wet plugs is a sign of leaking injectors, also cause the car to run rough

[Jeff@TopGearSolutions]

Yea looks like leaky injectors, especially if they smell like fuel.

If it was oil that would be a sign of a leaking valve cover gasket.

You may be able to get away with just cleaning up the spark plugs with something like brake cleaner. You need new injectors first though.

Apparently advanced auto parts is the go-to for injectors right now.

[ChaiLatte]

Originally Posted by Jeff@TopGearSolutions

Yea looks like leaky injectors, especially if they smell like fuel.

If it was oil that would be a sign of a leaking valve cover gasket.

You may be able to get away with just cleaning up the spark plugs with something like brake cleaner. You need new injectors first though.

Apparently advanced auto parts is the go-to for injectors right now.

Definitely hit advance up just ordered all 6 for 900.