www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums TDIFAQ Articles Links Meets
Orders TDI Club Cards TDIFest 2014 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You



Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI 101

TDI 101 Got a simple/basic TDI question? Are you a newbie (new to the forums). Feel free to post your question here.

Reply
 
Thread Tools
Old May 13th, 2009, 06:25   #1
Zakadamsgt
Newbie
 
Join Date: Feb 2007
Location: Atlanta
TDI(s): 1999 Golf
Default Help - Fuel Pump Losing Prime

Hey all,

My 99 TDI Golf has been having fuel injection problems. I ran out of fuel in the car last year, and re-primed all the lines. Everything worked fine for 2-3 months, but recently there have been occasions (this morning ) where it won't start. I have to use a vaccum tool to re-supply fuel to the pump b/c there's no fuel leaving the fuel filter. After I prime the fuel pump, I loosen one of the injectors and crank the engine until diesel starts spraying out at the injector. Then I tighten it up and everything works.

Question - what could be causing this failure? It's periodic, but incredibly annoying. I hope it's not a fuel pump problem.

Thanks

Zach
Zakadamsgt is offline   Reply With Quote
Old May 13th, 2009, 06:38   #2
merk
Veteran Member
 
Join Date: May 2006
Location: Etna, NH
Default

fuel tank sending unit crack can cause such symptoms. the tee on the filter could be cracked or the O rings could be rotten. Air is leaking in and allowing fuel to drain back to the tank. I think.
__________________
Merk
03 Jetta sedan & 03 Jetta wagon
Panzer skid plates, Bilstein TC's
merk is offline   Reply With Quote
Old May 13th, 2009, 06:52   #3
Zakadamsgt
Newbie
 
Join Date: Feb 2007
Location: Atlanta
TDI(s): 1999 Golf
Default

cool, I replaced the T 2 years ago when I replaced the fuel filter. Maybe the o-rings are bad? shirt lifespan. The stealership wants $45 for the T and $45 for the filter. I can't imagine that the filter needs to be replaced.
Zakadamsgt is offline   Reply With Quote
Old May 13th, 2009, 11:56   #4
A_Shifter
Veteran Member
 
A_Shifter's Avatar
 
Join Date: May 2006
Location: Prescott, AZ
Default

Take a look beneath the fuel injection pump distributor head. Is it wet? If fuel is leaking from the pump head seal it may also be sucking air into the pump. Here's your fix: Dieselgeek has a $10 fix complete with instructions.
http://www.dieselgeek.com/servlet/Detail?no=430
While you're at it, check the case pressure relief valve. This thread is pertinent: http://forums.tdiclub.com/showthread.php?t=194607
Hope that helps.


Quote:
Originally Posted by Zakadamsgt
Hey all,

My 99 TDI Golf has been having fuel injection problems. I ran out of fuel in the car last year, and re-primed all the lines. Everything worked fine for 2-3 months, but recently there have been occasions (this morning ) where it won't start. I have to use a vaccum tool to re-supply fuel to the pump b/c there's no fuel leaving the fuel filter. After I prime the fuel pump, I loosen one of the injectors and crank the engine until diesel starts spraying out at the injector. Then I tighten it up and everything works.

Question - what could be causing this failure? It's periodic, but incredibly annoying. I hope it's not a fuel pump problem.

Thanks

Zach
__________________

2003 Jetta TDI Wagon
, BW VNT17, Titan PP520s, 3 Bar MAP, Racepipe, EGR Cooler Delete, PP 2.5" DP>304 SS custom 3" cat-back, Peloquin Diff, .681 5th, VW DC Stage III+ Clutch, Boxed Fork, Sigma 5 Shifter, Bilsteins, TT bushings, Rear Sway Bar, Boost/Pyro/Oil Pressure/Oil Temp/ScanGauge, Cross-drilled rotors, Panzer Plate.

Last edited by A_Shifter; May 13th, 2009 at 12:01.
A_Shifter is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 09:01.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2014
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2013, All Rights Reserved
Page generated in 0.14382 seconds with 9 queries
[Output: 59.50 Kb. compressed to 52.80 Kb. by saving 6.71 Kb. (11.27%)]