GalantVR4.org The Mitsubishi Galant VR-4 Forum
Galant VR-4 Forums » Galant VR-4 » Technical Discussions » Pressure in fuel rail after engine shutoff..
Previous thread Next thread

Pressure in fuel rail after engine shutoff..


Barnes
Firechicken
908/1000
237/2000


Galant VR-4 org Post #: 742926 posted 01/08/09 11:35 AM     Remind Me!  Send Private Message   Edit Post      
How long should there be fuel pressure in the rail after you turn the car off?

I was working on my car last night, and noticed that after about 2hrs the pressure was down to 0psi. I don't think that's normal.



-Jon Barnes
#580/2000 (Long Gone)
#908/1000 Black (Sold)
#237/2000 White

Posts: 6249 | From: Richland, WA | Member Since: 02/09/03 | IP: (72.165.50.218) | Report this post to a Moderator

SleepinGVR4
What are we going to do today Ferb?
629/2000


Galant VR-4 org Post #: 742928 posted 01/08/09 11:42 AM     Remind Me!  Send Private Message   Edit Post      
I believe its different for every type of fuel pressure regulator. Some bleed off fast and some hold pressure for a while. What FPR do you have?

Someone correct me if i'm wrong.



Sean

Posts: 2483 | From: Danville, Pennsylvania | Member Since: 02/12/03 | IP: (70.44.250.133) | Report this post to a Moderator

strokin4dr
fighting them with a large needle
1280/2000
1135/2000


Galant VR-4 org Post #: 742929 posted 01/08/09 11:42 AM     Remind Me!  Send Private Message   Edit Post      
I have an aeromotive fpr and mine does the same thing. Others have had this happen with aftermarket fpr too. It takes a couple of seconds for the car to crank in the morning, but other than that I have no issue with it.



1908- sold and missed.
1280- 2.3, FP 35R, E85, etc.
1135- 100% stock
'93 Mirage hatch- 4g63, AWD, etc (hoarding for build)

Posts: 2766 | From: Savannah, GA | Member Since: 08/30/05 | IP: (71.229.63.35) | Report this post to a Moderator

Barnes
Firechicken
908/1000
237/2000


Galant VR-4 org Post #: 742936 posted 01/08/09 11:49 AM     Remind Me!  Send Private Message   Edit Post      
K. I can't believe I forget the name. The one that bolts straight to the rail. They only did a limited run.

Anyways, I guess that still leaves me pondering.

I'm still convinced I've got a bad injector. I guess I'll find out soon enough when I get my Keydiver ECU and I can put my 660's in.



-Jon Barnes
#580/2000 (Long Gone)
#908/1000 Black (Sold)
#237/2000 White

Posts: 6249 | From: Richland, WA | Member Since: 02/09/03 | IP: (72.165.50.218) | Report this post to a Moderator

icurunnin
GVR4 Pimpin
000/0000


Galant VR-4 org Post #: 742937 posted 01/08/09 11:50 AM     Remind Me!  Send Private Message   Edit Post      
another reason could be the fuel pump bleeding down. had that happen on 501 and had to tighten the clamp on my pump.



WTH are you looking at??

Posts: 1668 | From: Fort Worth Tx | Member Since: 11/20/06 | IP: (97.196.255.67) | Report this post to a Moderator

GVR4_1057
Member ++
1057/2000

1604/2000


Galant VR-4 org Post #: 742948 posted 01/08/09 12:05 PM     Remind Me!  Send Private Message   Edit Post      
It is pretty normal for the AFPRs to bleed off pressure right away. It used to bother me then I realized that there may be an advantage that it gets another couple engine rotations in to get the oil pressure higher before it fires. Maybe it doesn't matter that much



Billy B,
1057 Back after 5 years JSB
1604 all fixed again.
1986 Audi 4KQ
1997 BMW E36 328I

Posts: 676 | From: Brucetown VA | Member Since: 09/03/08 | IP: (12.171.68.176) | Report this post to a Moderator

Rausch Galant VR4.org Moderator
Rock Star Status


Galant VR-4 org Post #: 742951 posted 01/08/09 12:07 PM     Remind Me!  Send Private Message   Edit Post      
My Aeromotive held for like a week, and after that woudl bleed down in a matter of minutes. FWIW. Other than the mentioned extra cranks, no harm, no foul.



Rance lives here...
Founder of Sold out to BMW Cru, then sold out there too.


Posts: 12049 | From: Cleveland, OH | Member Since: 12/21/04 | IP: (63.253.227.122) | Report this post to a Moderator

Barnes
Firechicken
908/1000
237/2000


Galant VR-4 org Post #: 742954 posted 01/08/09 12:10 PM     Remind Me!  Send Private Message   Edit Post      
Well. I was just curious mostly because I'm trying to diagnose my injectors. I think one leaks. Weird idle issues, and the occasional backfire make me suspicious.



-Jon Barnes
#580/2000 (Long Gone)
#908/1000 Black (Sold)
#237/2000 White

Posts: 6249 | From: Richland, WA | Member Since: 02/09/03 | IP: (72.165.50.218) | Report this post to a Moderator

keydiver
Unregistered


Galant VR-4 org Post #: 742999 posted 01/08/09 01:23 PM     Remind Me!  Send Private Message   Edit Post      
Jon,remind me when I do your chip and I'll add some extra code that runs the fuelpump for the first 5 seconds when you turn the key on. That primes the pump and lines for you, so starting will be easier.
As far as the injectors, if you suspect a leaky injector I would send all 4 of them to Rich at CruzinPerformance and have them cleaned.

| | | IP: (74.225.117.107) | Report this post to a Moderator

Barnes
Firechicken
908/1000
237/2000


Galant VR-4 org Post #: 743002 posted 01/08/09 01:34 PM     Remind Me!  Send Private Message   Edit Post   
Thanks Jeff. Although it seems to start fine for me. So maybe I don't need it. :shrugh:

The injectors I have now are bone stock. I think when I put the black car down for maintainence I'm going to send off all 8 450cc injectors and get back on nice clean set.



-Jon Barnes
#580/2000 (Long Gone)
#908/1000 Black (Sold)
#237/2000 White

Posts: 6249 | From: Richland, WA | Member Since: 02/09/03 | IP: (72.165.50.218) | Report this post to a Moderator


Pages: 1
Previous thread Next thread

Extra information
0 registered and 15 anonymous users are browsing this forum.

Galant VR4.org Moderator:  curtis, steve, atc250r, jcgalntvr4-244, cheekychimp, jepherz, Rausch, toybreaker, iceman69510, pot, FlyingEagle 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 743

Rate this thread


News & Events: News | Events
Galant VR-4: Newbies | General VR4 Discussions | Technical Discussions | How To and Info Archive
Marketplace: Parts For Sale | Cars For Sale | Good Guys | Bad Guys
Community: Members' Showcase

Contact Us | Privacy statement GalantVR-4.org

Generated in 0.096 seconds in which 0.08 seconds were spent on a total of 14 queries. Turbo powered.


Hertz's Galant VR-4 Page