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Quattrocket
12-13-2005, 06:25 PM
so i took the car out tonight and noticed some hesitation under load. By the time I got home the car was chugging into the driveway. I parked it and checked under the hood, pulled the FPR VAC line to see what PSI it was running at and the guage didnt change readings. then there was a chugging like sound from the motor and the car nearly stalled. I shut it off and left it. Any ideas?

turbojunkie
12-13-2005, 06:29 PM
clogged fuel filter?

k0mpresd
12-13-2005, 06:40 PM
so what psi was it reading?

ExpLlclT
12-13-2005, 06:43 PM
fuel injectors

Quattrocket
12-13-2005, 06:47 PM
It was only reading like 34psi.

Quattrocket
12-13-2005, 06:48 PM
I was pushing the car pretty hard before that because the neighbour wanted to see the difference with the k04 in.

Quattrocket
12-13-2005, 06:49 PM
Originally posted by turbojunkie
clogged fuel filter?
then filter is due, but would it screw up all of a sudden like that?

k0mpresd
12-13-2005, 06:54 PM
fuel pump perhaps..

Quattrocket
12-13-2005, 06:55 PM
and also no CEL.

mike-2ptzero
12-13-2005, 11:42 PM
Could be something in the tank.


What pressure do you usually have the FPR set at and what is the lowest setting it can be set at? Just wondering if for some reason the FPR opened up all the way, thats if it is an adjustable fpr.

goldenchild
12-14-2005, 06:48 AM
well id have to say 36 psi is pretty low for any setup period u should be up in the 40's. 36 psi is like 2.45 bar

nd4spd
12-14-2005, 07:05 AM
i had similar problems .... although i am completely stock.
found out it was the MAF .... (i had no CEL either....which is weird)
be sure to check that ..... it took me forever to figure it out ...since there was no CEL.

also the problem was intermitten...... it would just show up randomly and then stop just as randomly.

k0mpresd
12-14-2005, 07:28 AM
his problem is not maf related

his problem is fuel pressure related, 34 psi is too low

bitterchild
12-14-2005, 07:31 AM
yea, below 38psi fuel atomization becomes and issue but that doesn't sound like the issue here.

mike-2ptzero
12-14-2005, 08:56 AM
Originally posted by bitterchild
yea, below 38psi fuel atomization becomes and issue but that doesn't sound like the issue here.

PC16 runs best at 36-40psi but depends on the size injectors. Just wonder if he is running that chip and a adjustable fpr since that is why he has a fuel pressure gauge. If so maybe the fpr failed.

Quattrocket
12-14-2005, 03:03 PM
The guage reads 34 and when I pull the fpr vac line in order to get the actual pressure, the needle doesnt move, stays at 34 for some reason. I had the system set at 38 because thats the highest I could go without fouling the plugs.

Quattrocket
12-14-2005, 03:05 PM
something else weird.
when I turn the key to start it, I usually leave it a little while so the throtle body to adapt and its making a really weird sound. I cant describe it so I will have to make a video.

Quattrocket
12-14-2005, 05:19 PM
Okay. need you're guys help on this one. I think its the fuel pump because the noise I thought that was coming from under the hood is actually coming from the rear of the car. its a loud pneumatic-like sound from the gas tank area. ive never had this before now. maybe it was on the way out for a while and the stress of the new turbo killed it? my kit ran well on the low end, but when the revs got up high the car would mis-fire and not accelerate like it should. so what do u guys think? pump or no?

mike-2ptzero
12-14-2005, 05:28 PM
Sounds like the pump.

TomRitt18944
12-14-2005, 05:57 PM
I got an extra stock I'll sell for 30 shipped

Quattrocket
12-14-2005, 06:04 PM
Tom, you got a deal. thanks buddy

mike-2ptzero
12-14-2005, 06:10 PM
I also have a used spare 255lph walbro

Quattrocket
12-14-2005, 06:19 PM
how much for the Walbro?

drlandry00
12-14-2005, 06:19 PM
that is AZ family love.. that is why I like this board, fellow helping fellow out!! AMEN!!

Quattrocket
12-14-2005, 06:24 PM
no kidding. I love this place.
BTW is the walbro just a straight job or require some customizing? Is it a good Idea to install it if Ive only got a k04?

turbojunkie
12-14-2005, 06:34 PM
Originally posted by drlandry00
that is AZ family love.. that is why I like this board, fellow helping fellow out!! AMEN!!


[:D] [up] [wrench]

TomRitt18944
12-14-2005, 07:18 PM
yea I've been helped out soo many times it not even funny! Thats one of the main reasons I still drive an audi/vw despites it unreliability :)

The walbro, needs a little rubber spacer that you can make out of some radiator hose. Its pretty straight forward install, but it is a little louder esp in the back seat. Great option if you decide to go bigger in the future

mike-2ptzero
12-14-2005, 07:45 PM
Originally posted by TomRitt18944
yea I've been helped out soo many times it not even funny! Thats one of the main reasons I still drive an audi/vw despites it unreliability :)

The walbro, needs a little rubber spacer that you can make out of some radiator hose. Its pretty straight forward install, but it is a little louder esp in the back seat. Great option if you decide to go bigger in the future


I have it in my tank without any spacer at all. It is a little smaller then the stock one but didn't seem to have a problem sitting in the tank without the spacer. For he install, the hardest part is turning the bucket in the tank and the wires for the walbro are reversed vs the stock pump.

Just afraid that if you went with the walbro with the PC16 it might be too rich at higher rpms since the pump will be flowing much more vs the stock pump.

Quattrocket
12-14-2005, 08:04 PM
So, the stock one is probobly the best option right now? I dont wanna create more problems for myself. my car gives me enough of those, LOL.

quattro8239
12-14-2005, 08:08 PM
I remeber you recently just went pc-16 I will be doing my setup soon and giac recommends you get a new fuel filter when installing the kit...just something to think of when changing your pump

b00st
12-14-2005, 08:16 PM
Originally posted by Quattrocket
Okay. need you're guys help on this one. I think its the fuel pump because the noise I thought that was coming from under the hood is actually coming from the rear of the car. its a loud pneumatic-like sound from the gas tank area. ive never had this before now. maybe it was on the way out for a while and the stress of the new turbo killed it? my kit ran well on the low end, but when the revs got up high the car would mis-fire and not accelerate like it should. so what do u guys think? pump or no?

funny you mention a pneumatic sound in the gas tank area...i get that on cold starts in the winters...there is also a little chirpping that goes with it. I listened and its the drivers side rear. its not the muffler i looked under to see what it was but I have no clue its not the muffler and its not my fuel pump. only happens to me on cold winter starts and after 5 min its gone. No CEL related with mine or driving issues. but i dont like that sound. i had my fuel pump changed out by audi a while back due to my fuel tank sending unit being off about a 1/4...i ran it dry and burnt it out.

BarryT82
12-15-2005, 04:02 AM
$30 shipped is a hell of a deal.