|
Register or Log In To remove these advertisements. |
|
|
|
|||||||
 |
|
|
Thread Tools | Display Modes |
08-23-2004, 04:52 PM
|
#1 |
|
Registered User
Join Date: Mar 2000
Location: cedar hills utah USA
Posts: 89
|
need daily driver help
My daily driver is a 99 gmc with the 5.3. Lately it has been hard to start warm. Its starts just fine after sitting for several hours. Fuel pressure is at 45 pounds and bleeds to 40 right after shutdown.
Im not a fuel injection guy but does this sound like a pump problem? Shouldnt the pressure be about 60-65 pounds? |
|
|
|
08-23-2004, 05:17 PM
|
#2 |
|
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
change your fuel filter
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
|
|
|
|
08-23-2004, 05:23 PM
|
#3 |
|
He's got mean nasty FANGS!
 
Join Date: Dec 1999
Location: Rockwell, NC
Posts: 6,591
|
Fuel pressure with the regulator hooked up is in the neighborhood of 45-50lbs on those, unhook the vac line to the regulator on the drivers side, pressure should hit 55-60.
__________________
2004 K2500 Burb 1999 C3500 1985 Cutlass Supreme 1969 C-10 1967 C-10 Panel josh@67-72chevytrucks.com 6772chevycom@gmail.com |
|
|
|
|
08-23-2004, 05:23 PM
|
#4 |
|
Registered User
Join Date: Mar 2000
Location: cedar hills utah USA
Posts: 89
|
That was first thing I tried a couple weeks ago. Didnt help.
|
|
|
|
|
08-25-2004, 02:55 AM
|
#5 |
|
Registered User
Join Date: Oct 2003
Location: Broken Bow, OK
Posts: 1,385
|
It is the fuel pressure regulator. Replaced tons of them on the GEN III engines with the same syptoms. Pull the vac line off. Is it wet inside? Sure sign of bad regulator.
__________________
95 K3500 SRW 5.7L Vortec 4L80e 4.10 G80 2001 GMC C3 6.0 AWD, Volant, 3/5 drop TBSS intake, HP tuners, pullies, 05 efans, 05 front brakes, etc. 2003 Tahoe Z71 Silverado front clip |
|
|
|
|
08-25-2004, 10:47 AM
|
#6 |
|
Registered User
Join Date: Mar 2000
Location: cedar hills utah USA
Posts: 89
|
99-2door - On the advice of someone else I pulled the vac line of the regulator but it was dry. Cold start is great but u wait about 15 minutes and it acts like it flooded. Is there any other way to check the regulator?
If I borrow my friends fuel pressure gauge again, what shout the pressure do when the vac line is removed from the regulator. Should the pressure go up or down? Last edited by stea; 08-25-2004 at 11:25 AM. |
|
|
|
|
08-25-2004, 03:22 PM
|
#7 |
|
Registered User
Join Date: Mar 2000
Location: cedar hills utah USA
Posts: 89
|
99-2door. rechecked the regulator after it had sat for about 2 hours, yup, fuel came squirting out. THANKS for the help.
|
|
|
|
|
| Bookmarks |
|
|
Linear Mode
