how long should a fuel pressure gauge take to read full psi? - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 08-11-2013, 08:12 PM   #1
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
how long should a fuel pressure gauge take to read full psi?

Hey brothers and sisters, my pony is sick! Last night she would not accelerate past 45mph and started bucking VERY BADLY, then she shut off on me. So I pulled (ROLLED LOL) over and got cylinder 2 misfire and cylinder 5 misfire. She would turn over and then die if I didn't keep my foot on the gas. So I cleared the codes, started her and she got me home ok without shutting off!!
I began to think ok, fuel issue. Went to Auto Zone and rented a fuel pressure tester. When I started my pony it took the gauge about 4-5 min to finally rise to it's highest point of 38 psi.. IS THIS NORMAL? If not, what could be the possible issue here? Any guess is very much appreciated.
99NewEdgeGT is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-11-2013, 08:16 PM   #2
Registered Member
Regular
 
Roguestang's Avatar
 
Join Date: Nov 2011
Location: Tampa
Region: Florida
Posts: 1,516
Doesn't sound normal to me, does your fuel pump prime as soon as you turn the key?
__________________
2000 Mustang GT-Former giggle gas addict
1990 Mustang GT w/ Vortech V3

***resident gun idiot***
Roguestang is offline   Reply With Quote
Old 08-11-2013, 08:30 PM   #3
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by Roguestang View Post
Doesn't sound normal to me, does your fuel pump prime as soon as you turn the key?
Yeah, well at least I think it does. I may have to have the gf turn the key while I listen. But I know at times I have heard it prime. I surely hope its a fuel filter and not a freaking pump.
99NewEdgeGT is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-11-2013, 08:44 PM   #4
Registered Member
Regular
 
Roguestang's Avatar
 
Join Date: Nov 2011
Location: Tampa
Region: Florida
Posts: 1,516
Hopefully it is, but it really isn't that hard to drop the tank and replace it if it came to that. You could also check the voltage to the pump relay, if you can.
__________________
2000 Mustang GT-Former giggle gas addict
1990 Mustang GT w/ Vortech V3

***resident gun idiot***
Roguestang is offline   Reply With Quote
Old 08-11-2013, 09:15 PM   #5
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by Roguestang View Post
Hopefully it is, but it really isn't that hard to drop the tank and replace it if it came to that. You could also check the voltage to the pump relay, if you can.

Voltage should read 12 volts right? I'm sure that's right, just m.s.

---------- Post added at 09:15 PM ---------- Previous post was at 09:13 PM ----------

Quote:
Originally Posted by Roguestang View Post
Hopefully it is, but it really isn't that hard to drop the tank and replace it if it came to that. You could also check the voltage to the pump relay, if you can.

But the gauge is suppose to read quicker then 4min though??? Right??
99NewEdgeGT is offline   Reply With Quote
Old 08-11-2013, 09:20 PM   #6
Registered Member
Regular
 
Roguestang's Avatar
 
Join Date: Nov 2011
Location: Tampa
Region: Florida
Posts: 1,516
I'm not entirely sure of the correct voltage, but it shouldn't take that long. Was it consistently taking that long or did you check it just one time?
__________________
2000 Mustang GT-Former giggle gas addict
1990 Mustang GT w/ Vortech V3

***resident gun idiot***
Roguestang is offline   Reply With Quote
Old 08-11-2013, 09:35 PM   #7
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by Roguestang View Post
I'm not entirely sure of the correct voltage, but it shouldn't take that long. Was it consistently taking that long or did you check it just one time?

Lol just one time, it took soooo long for the gauge to drop down after shutting car off. That I didn't even want to go through the process again. Took over 10min to drop. I eventually just said screw it, got a towel and let gas squirt over it while I unhooked gauge.
99NewEdgeGT is offline   Reply With Quote
Old 08-11-2013, 09:39 PM   #8
Registered Member

Regular
 
Ubnbit's Avatar
 
Join Date: Jan 2013
Location: Tazewell
Region: Tennessee
Posts: 3,532
http://www.mustang50magazine.com/tec...s/viewall.html

Read the injector section. Might be helpful.

Had u just gotten gas? Done anything different? Have a tune and bought a different grade gas than ur tune?
__________________
Tint, louvers, Shelby brake light cover, sequentials, brake vent ring delete, Shorty antenna, JLT cold air intake, BAMA tune, VMP 2.5 S/C pulley, Ford racing shifter, MRT OR-H, SLP loudmouths, BMR adj PHB, BMR LCA, Eibach Pro-Kit, cobra jet big oval TB.
Ubnbit is offline   Reply With Quote
Old 08-11-2013, 09:51 PM   #9
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by Ubnbit View Post
Fuel System DIY Secrets - Tech Information - 5.0 Mustang & Super Fords Magazine

Read the injector section. Might be helpful.

Had u just gotten gas? Done anything different? Have a tune and bought a different grade gas than ur tune?

I remember having a race tune on it from bama. But wasnt as aggressive as am says, so I returned it back to stock with very little 93 octane left in the tank. But since then I've been running my stock settings. I think I may have gotten bad gas. I just got some exxon fuel
....drove her and she ran much stronger, but still has hesitation and a idle of 500 rpm.
99NewEdgeGT is offline   Reply With Quote
Old 08-11-2013, 10:00 PM   #10
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by Ubnbit View Post
Fuel System DIY Secrets - Tech Information - 5.0 Mustang & Super Fords Magazine

Read the injector section. Might be helpful.

Had u just gotten gas? Done anything different? Have a tune and bought a different grade gas than ur tune?

And when I switched back to stock tune.....that was a month ago btw.
99NewEdgeGT is offline   Reply With Quote
Old 08-11-2013, 10:14 PM   #11
Road Trip!
 
Join Date: Nov 2011
Location: Arcadia
Region: Florida
Posts: 2,785
Just a thought here, but could it be a clogged catalytic converter?

My dads truck acted the same way and he had a clogged cat.

Good luck!
93mstnglx is offline   Reply With Quote
Old 08-11-2013, 10:14 PM   #12
Registered Member

Regular
 
Ubnbit's Avatar
 
Join Date: Jan 2013
Location: Tazewell
Region: Tennessee
Posts: 3,532
That's what it sounds like. If it is only a little moisture, try some gas treatment. See if that helps. Doesn't sound like its anything major. Obviously the fuel pump is working.

Anything else besides just the miss or bogging?

It must not be too full of water or it would be horrible.
__________________
Tint, louvers, Shelby brake light cover, sequentials, brake vent ring delete, Shorty antenna, JLT cold air intake, BAMA tune, VMP 2.5 S/C pulley, Ford racing shifter, MRT OR-H, SLP loudmouths, BMR adj PHB, BMR LCA, Eibach Pro-Kit, cobra jet big oval TB.
Ubnbit is offline   Reply With Quote
Old 08-11-2013, 10:21 PM   #13
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by Ubnbit View Post
That's what it sounds like. If it is only a little moisture, try some gas treatment. See if that helps. Doesn't sound like its anything major. Obviously the fuel pump is working.

Anything else besides just the miss or bogging?

It must not be too full of water or it would be horrible.

Yea a slight miss when accelerating under low rpms. Idle also bounces when in gear. But only when the ac is on. If off, its fine. Ac on in neutral or park its fine. But in drive or reverse ....rpms bounce. She'll take off on her own if brake is not applied good enough.
99NewEdgeGT is offline   Reply With Quote
Old 08-12-2013, 10:39 AM   #14
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by 93mstnglx View Post
Just a thought here, but could it be a clogged catalytic converter?

My dads truck acted the same way and he had a clogged cat.

Good luck!

Mmmm, I deleted my rear catts. Maybe your right, but wouldn't deleting rear catts give front catts better flow? Ill be changing out fuel filter and maf sensor in the next hour. (Fingers crossed).
99NewEdgeGT is offline   Reply With Quote
Old 08-12-2013, 10:46 AM   #15
Road Trip!
 
Join Date: Nov 2011
Location: Arcadia
Region: Florida
Posts: 2,785
Quote:
Originally Posted by 99NewEdgeGT View Post

Mmmm, I deleted my rear catts. Maybe your right, but wouldn't deleting rear catts give front catts better flow? Ill be changing out fuel filter and maf sensor in the next hour. (Fingers crossed).
OK I'm not sure about the better flow :/

Hopefully it's just fuel related and you can be driving again!!
93mstnglx is offline   Reply With Quote
Old 08-12-2013, 10:53 AM   #16
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Quote:
Originally Posted by 93mstnglx View Post
OK I'm not sure about the better flow :/

Hopefully it's just fuel related and you can be driving again!!

Yea I'm hoping so too. Thanks man. Ill post updates later on today. As most people don't.
99NewEdgeGT is offline   Reply With Quote
Old 08-14-2013, 05:47 PM   #17
Registered Member
Regular
 
99NewEdgeGT's Avatar
 
Join Date: Aug 2013
Location: little rock
Region: Arkansas
Posts: 24
Tune up fixed my issue. Thanks guys. Still think its weird how it would miss at times, then not miss, then miss again lol.
99NewEdgeGT is offline   Reply With Quote
Old 08-14-2013, 06:14 PM   #18
Registered Member

Regular
 
Ubnbit's Avatar
 
Join Date: Jan 2013
Location: Tazewell
Region: Tennessee
Posts: 3,532
If a plug was fouled, it wouldn't be firing on that cylinder. Glad for u brother.
__________________
Tint, louvers, Shelby brake light cover, sequentials, brake vent ring delete, Shorty antenna, JLT cold air intake, BAMA tune, VMP 2.5 S/C pulley, Ford racing shifter, MRT OR-H, SLP loudmouths, BMR adj PHB, BMR LCA, Eibach Pro-Kit, cobra jet big oval TB.
Ubnbit is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 1996-2004 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are On
Refbacks are Off


» Like Us On Facebook



11:50 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.