Audi Dying Issue. - General

To start off I when I fist bought the car it was having slight issues when first cranking up. Turn the key and engaged the starter. With no hesitation it would crank up, but after it was "cranked" the rpm's would fall and the engine would almost stall. Thin in a blue moon the car would refuse to crank. Only thing it would to is hiccup, but after a min of siting there it would finally crank and idle perfectly. One day it got to the point were the car would run absolutely horrible. My mechanic friend and I was fooling around and noticed the vaccume lines were totally trashed leading to the Fuel Pressure Regulator and we replaced that vaccume line. Somehow that fixed it running shitty, but it still cranked and almost stall. One week I sent my Instrument cluster in for a rebuild. That week it was just sitting up doing nothing. The day I got the cluster back I went to go crank it up. Only thing the thing would do is hiccup for a good 8min, but thin the hiccuping got faster and she finally idled. But now it's getting to the point when I crank it I have to give it gas to stay alive, But after it idle's for a sec or two it's good. Were I'm getting is this a issue with ether the fuel pressure regulator or the fuel pump. To my knowledge witch is nothing about engine's is it say's fuel to me. Help?

Might be *Insert list of everything what could be wrong here* Fuel Filter, Fuel Pressure Regulator, Vaccume Leak, Mass Air Flow Sensor, Throttle Body? [t]http://dl.dropbox.com/u/1031910/Img%20Dump/4ILY.jpg[/t]

Bad compression?

German engineering

Well... upon barely any info... When FPRs go bad the most common symptom is having to give it pedal to start, then having to give it pedal to get it to idle well.... most commonly to start, though. Did any gas come out of the vacuum line when you pulled it off the FPR? Sure sign it's toast if it did. Get a fuel pressure gauge on it if it's got a schroeder valve.. See if your pressure is OK. Also.. see if it leaks down quickly... may have a leaky injector. Granted, it'd probably have a dead miss no matter what if it was, but I've seen stranger. Also, check your spark.... I know some Audis had COP, but since this one is a mystery car.. who knows? Should be nice and bright white/blueish/purplish and jump a good half inch. I've seen VW coils spark enough to run/idle... but nothing else. The last one I replaced would idle kinda sorta after I got it started, but eventually die after the coil heated up, then not start again until it cooled down. That's really all I got.

I'm not a mechanic but it sounds like you either have a problem with fuel movement or air intake. Pump, fuel filter(if present), clogged fuel injectors, O2 sensor, air filter, etc. Could even be a combination. Not very helpful I know, but I have a good feeling it's something in that list.

When I pulled the vaccume line off the FRP gas did not squirt out. In fact the car ran almost if not the same with the vaccume line taken off the FRP. Time to go get a fuel pressure gauge... And I might play around with my coil pack. The wiring going into it is... not pretty.

Gas won't "squirt" out of the FPR's vacuum line, really, it's rather the residue that you are looking for.

Alright. I checked for "residue" on the FPR, None. I got a new Fuel Filter, Did not help. I checked fuel pressure as I removed the fuel filter, Yea I did not mean to but my dad had the key's in the ignition... Fun. Gas went every were. Also I poured a whole can of sea foam in the tank. thin drove it a good 100miles like a mad man. Hope that will help. But any way's I guess it's time to check more serious stuff. It also now idle's weird I hooked up the computer to it. 640rpm's - 680rpm's All sensor's looked fine, But I had no idea what I was looking at number wise.

Heh.. how can all sensors look fine if you don' know what you're looking for?? There's a bunch, AllData or an equivalent prog can give you known goods. Gotta have the known good to be able to pick out the bads. Also, you don't know if you have adequate fuel pressure yet... you just know the pump pumps fuel. 10 psi? 40 psi? Just for the hell of it.. hook a vacuum gauge up to the engine too, to see what kind of vacuum your getting.... Here's a site to explain the various readings you should have, or may encounter: [url]http://www.secondchancegarage.com/public/186.cfm[/url] May shed a little light.