Stock injector order

[SmsAlSuwaidi]

Originally Posted by BadBRZ

You can register it at my place in texas ;-P

[SPCorBUST]

Originally Posted by BadBRZ

Thank you sir, but its not an AGP kit, just the turbo. i'll have updates on my build as it progress' dyno is tomorrow..

[SPCorBUST]

Thought I had the injectors sorted, but I guess not. Seems like I fubarred the install on the passenger side, as there is a vacuum leak sound coming from there. I'm gonna pull them again and take a look, but any hints as to what I should be looking at? I figure the top is fine since its not leaking fuel, but maybe those rubber seals at the bottom weren't working properly due to install error, deterioration, some other reason, or all of the above. Truth be told, I'm a total noob at injectors, this was my first go at it.

[SPCorBUST]

Funny thing, I was getting P0171 (IIRC) for lean condition and I thought it was just the 2/3 91 and 1/3 E85 I was burning through (E85 was remnants from my FlexFuel tune, leftover that I hadn't burned off before I put the 91 in) so I thought it was fine. 6 gallons later its still lean, so I try the MAF cleaning but that didn't work. Pretty convinced its a vac leak at the injector bottom, but hoping for input from some of the gurus!

[BadBRZ]

i can't help you on this, but i wish you the best of luck mate.

Have you checked out dezoris' install video?

[andrew20195]

Originally Posted by SPCorBUST

Funny thing, I was getting P0171 (IIRC) for lean condition and I thought it was just the 2/3 91 and 1/3 E85 I was burning through (E85 was remnants from my FlexFuel tune, leftover that I hadn't burned off before I put the 91 in) so I thought it was fine. 6 gallons later its still lean, so I try the MAF cleaning but that didn't work. Pretty convinced its a vac leak at the injector bottom, but hoping for input from some of the gurus!

Assuming you didn't pull the manifold to change injectors, the only thing it could be is the injector grommets. A vacuum leak would definitely cause a lean condition at all times. If you have the means to do real time datalogging, you can spray a can of brake cleaner in the suspected leak area and watch the A/F Correction. If there's a leak, it will decrease (due to the richer mixture)

[SPCorBUST]

Yeah, I did not pull the manifold, just the rail. It's a noticeable sound, I've never had a leak there before it's interesting, annoying and troubling all at once. I was planning on purchasing those rubber grommets from the dealer today.

[SmsAlSuwaidi]

Originally Posted by SPCorBUST

Yeah, I did not pull the manifold, just the rail. It's a noticeable sound, I've never had a leak there before it's interesting, annoying and troubling all at once. I was planning on purchasing those rubber grommets from the dealer today.

Might be the vacuum lines, do you have them zip tied?

[SPCorBUST]

Yep. Went through and did several checks. Ordered the grommets and o rings, should be here next week Wed or Thu. Pulling them tonight to have another look.

[SPCorBUST]

Pulled them, it looks like its the injector grommets that are bungled.

[BadBRZ]

GOOD TO KNOW

[SPCorBUST]

Just an update in case anyone else comes across the issue, from the fuel rail side moving down into the manifold, the large rubber grommet that sits at the middle step solved all of my issues. The injector now seats properly and I do not have the myriad number of codes associated with the vacuum leak and subsequent leaning on that side.