Alright guys so when I first got the car it had been sitting and the first thing I replaced was the bad fuel pump and it worked great until a few weeks after where the car began to start hard. Now I looked at the pump and the filter is covered in silver/gray gunk (it was very clean when I first installed) and I went ahead and looked and some kind of residue is coming of the tank walls! What can it be and how do I go about cleaning this?

The silver finish in the image, you can also see my hand wipe
Thanks

 

Clean out the pump again and use a tank cleaner like you inquired about. Infiniti can flush it for you also. You wouldn't believe how many flushes they do because of people putting diesel in.

 

This is what came out of the pump alone...


And will do! Haha my friend is one of the $hit heads who has haha, any clue how much it would cost?

 

I'll call the dealership mañana.

 

I'll do so too thanks!!