Need help locating this part on the X

[Hoopie]

Originally Posted by asawadude

What exact code was triggered?

If I'm not mistaken, the leak evaporative pump is the DMTL pump which pressurizes the fuel tank allowing a leakage check to be performed.

Check out page 4 of 28 of the following document:
http://www.unofficialbmw.com/images/...lectronic3.pdf

Although this document is specific to the E46 M3, the DTML pump is the same part for most BMW's. Because this pump is directly controlled by the ECM, the OBDII codes relating to the pump are accurate. Either the fittings to the pump are faulty or the pump itself is faulty, but the problem is definitely pump related. Any examination will determine specifically what the issue is.

If you've tightened the gas cap and reset the codes, only to have the same code appear, it's not the cap.

I checked the gas cap and it was tight. I don't think that is the problem. Codes, sorry I didn't write them down. I know I shold have done that. Thanks for the article on the fuel system. I'm trying to track down the problem. Hopefully this weekend I'll have the right answers.

[supersteve]

The U shaped tube is your fuel rail. Do you smell any gas? You may have also loosened one of the fuel Injectors unseating it's oring into the head, causing an intake leak at that (or those) injector(s).

The intake boot is the tube that runs from the air cleaner to the throttle body. When climbing around under the hood it can be displaced and pushed off the throttle body.

As far a hoses to check. All of them. Make sure they are all in place. There are only two (I think) that are not connected on both ends. They come out from the coil covers and they are vents.

Also make sure all the hose clamps are tight enough to seal.

Third rule of thumb for troubleshooting:
3. If something new happens after you worked on it, go back and look were you worked.

[supersteve]

What did you ever find?!?!?!