HomeDashboardFAQSearchRiviera Questions & AnswersWrite-Ups IndexRegisterRelated LinksMemberlistLog in
Share | 
 

 fuel pressure spec

View previous topic View next topic Go down 
Go to page : Previous  1, 2, 3  Next
AuthorMessage
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Sun Nov 03, 2013 10:01 pm

Johnny5 wrote:
Find a old one in the junk yard n experiment first so u dont have no long down time in the process
i will have to look may be hard to fine a riv replacement though
Back to top Go down
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Sun Nov 03, 2013 10:03 pm

deekster_caddy wrote:
If it's hitting 50 with the key off, try changing your fuel filter before you replace the pump.
i tried that like i said it was before only at 35 koeo but today was magically 50 koeo but now bounces bad on idle and drops down to 35 at idle vs 25 before i have no guess as to why it went up between today and yesterday.
Back to top Go down
deekster_caddy
Master


Name : Derek
Age : 45
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7716
Merit : 109

PostSubject: Re: fuel pressure spec   Mon Nov 04, 2013 8:57 pm

Sorry about that. Some grammar and punctuation would make your posts a lot easier to read. If you leave the vacuum line off and plugged with the engine running does the FP stay at 50?
Back to top Go down
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Thu Nov 07, 2013 1:31 am

deekster_caddy wrote:
Sorry about that. Some grammar and punctuation would make your posts a lot easier to read. If you leave the vacuum line off and plugged with the engine running does the FP stay at 50?
Sorry for the punctuation errors I normally post from my phone and its a pita. The following is the specs from last time I checked fuel pressure.
 
Key on engine off 50psi
key on engine off with vac applied to regulator 45psi approx. dropping with increase in vac(so regulator is working as it should)
at Idle I am unable to read jumping between 25 and-35 (assuming is jumping when injectors open as fuel pump is not keeping up)
 
 
The first time I checked fuel pressure (day before the above mentioned readings) I was at only 35 psi with key on engine off.....
Back to top Go down
deekster_caddy
Master


Name : Derek
Age : 45
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7716
Merit : 109

PostSubject: Re: fuel pressure spec   Thu Nov 07, 2013 9:01 am

deekster_caddy wrote:
If you leave the vacuum line off and plugged with the engine running does the FP stay at 50?

mattsaari wrote:
Key on engine off 50psi
key on engine off with vac applied to regulator 45psi approx. dropping with increase in vac(so regulator is working as it should)
at Idle I am unable to read jumping between 25 and-35 (assuming is jumping when injectors open as fuel pump is not keeping up)
So, what is it with the vacuum line off and the engine running?

edit - was it you replacing the EGR tube for a vacuum leak? If so, forget about this issue until you have resolved your vacuum leak.
Back to top Go down
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Sun Nov 10, 2013 8:38 pm

deekster_caddy wrote:


deekster_caddy wrote:
If you leave the vacuum line off and plugged with the engine running does the FP stay at 50?



mattsaari wrote:
Key on engine off 50psi
key on engine off with vac applied to regulator 45psi approx. dropping with increase in vac(so regulator is working as it should)
at Idle I am unable to read jumping between 25 and-35 (assuming is jumping when injectors open as fuel pump is not keeping up)
So, what is it with the vacuum line off and the engine running?

edit - was it you replacing the EGR tube for a vacuum leak? If so, forget about this issue until you have resolved your vacuum leak.
 
It was the same with or without the vac line off. and I wasn't messing with the egr.
 
Update- I pulled the fuel pump and received a replacement pump. I thought they sent me the wrong pump as it did not fit in the sending unit, but then I looked at the p/n for the fuel pump and found the pump that was in it was for a n/a model bonk bonk . So now im waiting till Wednesday for the replacement pump to come in the mail hope that fixes it!
Back to top Go down
deekster_caddy
Master


Name : Derek
Age : 45
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7716
Merit : 109

PostSubject: Re: fuel pressure spec   Wed Nov 13, 2013 10:09 am

How much vacuum do you have on the line? Your fuel pressure should change when you hook up the vacuum line to the regulator. If you put a vacuum pump on the regulator do you change your fuel pressure?
Back to top Go down
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Wed Nov 13, 2013 1:51 pm

I did not have a way to see how much vaccume was on yhe line. but as i said the fuel pressure did change with vaccume on the regulator with the car not running. but did not change with vaccume at idle. i am assuming it is due to the fuel pump already not keeping up and being at spec so the regulator wouldnt change it anyways. the fuel pump will be here tommorow so i will know then if that is the problem.
Back to top Go down
deekster_caddy
Master


Name : Derek
Age : 45
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7716
Merit : 109

PostSubject: Re: fuel pressure spec   Wed Nov 13, 2013 3:03 pm

It sounds to me like your fuel pump is working, and you are having a problem with the vacuum line or regulator. A handheld vacuum pump/gauge is a lot cheaper than an unnecessary fuel pump.

http://www.sears.com/mityvac-automotive-tune-up-and-brake-bleeding-kit/p-00947058000P?prdNo=1&blockNo=1&blockType=G1
Back to top Go down
bmcd9179
Fanatic
avatar

Name : Bryson
Age : 21
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

PostSubject: Re: fuel pressure spec   Wed Nov 13, 2013 4:27 pm

I have a 96 sc as we'll and I had to replace the fuel pump as we'll, as soon as I did check engine code was off, a month later it came on again, and it was my egr tube leaking, so try the fuel pump, that's my opinion.
Back to top Go down
Abaddon
Expert
avatar

Name : Scott
Location : Macomb, Michigan
Joined : 2010-02-24
Post Count : 4164
Merit : 171

PostSubject: Re: fuel pressure spec   Wed Nov 13, 2013 4:31 pm

deekster_caddy wrote:
A handheld vacuum pump/gauge is a lot cheaper than an unnecessary fuel pump.


werd
Back to top Go down
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Wed Nov 13, 2013 11:43 pm

I had a vac pump as i said at idle it did not change but without the engine running it did.. i also said the fuel pump in it is for a n.a car which means it should be replaced anyways i found that when i went to replace the pump strainers
Back to top Go down
mattsaari
Amateur


Name : matt saari
Age : 26
Location : s.e wi
Joined : 2013-10-28
Post Count : 34
Merit : 0

PostSubject: Re: fuel pressure spec   Fri Nov 15, 2013 1:53 pm

Replaced the fuel pump my ltft went from 16% down to .7% at idle and i now have 45 psi at odle and around 50 55ish when i rev the engine. i will update when i find out if the check engine light comes back on or not. (keeping fingers crossed)
Back to top Go down
bmcd9179
Fanatic
avatar

Name : Bryson
Age : 21
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

PostSubject: Re: fuel pressure spec   Sun Nov 17, 2013 6:17 pm

Nice! Goodluck
Back to top Go down
h20man
Enthusiast
avatar

Name : Aaron W.
Age : 23
Location : CT
Joined : 2013-10-04
Post Count : 228
Merit : -2

PostSubject: Re: fuel pressure spec   Sun Nov 17, 2013 9:57 pm

im going through the same problem, p0171 mad ive replaced vacumn lines, fuel filter, egr valve, egr tube, plugs wires, upstream o2, maf, cleaned my throttle body im literally going nuts with this code and i have to go through emissions very soon. i checked my fuel pressure and it was good i think ive narrowed it down to a sticking injector since i have a rough idle at startup, crossing my fingers hoping this fixes it since i ordered cleaned and flowed l67 injectors from zzp
Back to top Go down
chitown_riv98
Fanatic
avatar

Name : Ruben
Age : 36
Location : Illinois
Joined : 2008-03-10
Post Count : 396
Merit : 2

PostSubject: Re: fuel pressure spec   Tue Nov 19, 2013 2:29 am

Try getting the O2 emulator from zzp. That was the only way I managed to get the light to shut off for smog. I think the real issue was the cat tho but I was going to delete it anyway.
Back to top Go down
Abaddon
Expert
avatar

Name : Scott
Location : Macomb, Michigan
Joined : 2010-02-24
Post Count : 4164
Merit : 171

PostSubject: Re: fuel pressure spec   Tue Nov 19, 2013 9:58 am

An O2 Emulator is for the catalyst monitoring O2 only. It has ZERO bearing on a P0171 code....
Back to top Go down
h20man
Enthusiast
avatar

Name : Aaron W.
Age : 23
Location : CT
Joined : 2013-10-04
Post Count : 228
Merit : -2

PostSubject: Re: fuel pressure spec   Tue Nov 19, 2013 11:21 am

I don't think my cat has anything to do with the 171 I really hope it a sticking or faulty injector
Back to top Go down
h20man
Enthusiast
avatar

Name : Aaron W.
Age : 23
Location : CT
Joined : 2013-10-04
Post Count : 228
Merit : -2

PostSubject: Re: fuel pressure spec   Wed Nov 20, 2013 9:11 pm

Update: brand new injectors.... Check engine set again at this point I really have no clue what to do I've spent alot of money on maintenance parts trying to get rid of this code, I wanted to save for a paint job but looks like that isn't happening
Back to top Go down
deekster_caddy
Master


Name : Derek
Age : 45
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7716
Merit : 109

PostSubject: Re: fuel pressure spec   Thu Nov 21, 2013 11:32 am

Generally P0171 means you have a vacuum leak somewhere. Have you tried lightly spraying carb cleaner around the base of the intake manifold, around all of the connection points after the throttle body and MAF, basically all over the upper engine? At some point the carb cleaner spray will affect the way the engine is running, and you'll find the leak.
Back to top Go down
bmcd9179
Fanatic
avatar

Name : Bryson
Age : 21
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

PostSubject: Re: fuel pressure spec   Thu Nov 21, 2013 12:53 pm

See if your egr tube is leaking, mine was and after that my car is 100%
Back to top Go down
h20man
Enthusiast
avatar

Name : Aaron W.
Age : 23
Location : CT
Joined : 2013-10-04
Post Count : 228
Merit : -2

PostSubject: Re: fuel pressure spec   Thu Nov 21, 2013 1:57 pm

this is what ive changed so far: maf sensor, egr valve, egr tube, plugs and wires, fuel filter, throttle body gasket, injectors, vacumn elbows and lines, upstream 02 sensor, cleaned throttle body and tps and still have this code. I dont want to hijack this thread but i hope this information will help someone out before they throw parts at it like me. The ONLY things that i havent changed are the fuel pump and evap canister underneath the car, i sprayed starting fluid all over the intake bolts and vacumn lines and no rev up. could my fuel pump be bad? it idles very rough sometimes and leads me to believe my pump might be going out.
Back to top Go down
deekster_caddy
Master


Name : Derek
Age : 45
Location : Reading, MA
Joined : 2007-01-31
Post Count : 7716
Merit : 109

PostSubject: Re: fuel pressure spec   Thu Nov 21, 2013 2:49 pm

Aaron do you know if the lower intake gaskets have ever been replaced? It's vacuum leak could be internal. Do you ever have to add coolant, but aren't dripping any?
Back to top Go down
h20man
Enthusiast
avatar

Name : Aaron W.
Age : 23
Location : CT
Joined : 2013-10-04
Post Count : 228
Merit : -2

PostSubject: Re: fuel pressure spec   Thu Nov 21, 2013 4:43 pm

Yes I replaced my intake gaskets along with my blower
Back to top Go down
bmcd9179
Fanatic
avatar

Name : Bryson
Age : 21
Location : Utah
Joined : 2013-09-21
Post Count : 288
Merit : 1

PostSubject: Re: fuel pressure spec   Thu Nov 21, 2013 8:00 pm

Man that sucks you've replaced the hole car lol, I don't know much, but fuel pump is all I can think of, I have a 1996 and I just replaced mine bc it when out on me. I got mine from ORiley, stock, is what I would go for, for you in my opinion.
Back to top Go down
 
fuel pressure spec
View previous topic View next topic Back to top 
Page 2 of 3Go to page : Previous  1, 2, 3  Next
 Similar topics
-
» fuel pressure spec
» Fuel Pressure Regulator Test
» fuel pressure valve
» To much fuel pressure
» Fuel pressure reg relocation Now with fuel cooler added.

Permissions in this forum:You cannot reply to topics in this forum
Riviera Performance ::   Supercharged 3800 Tech :: Series II Engine & Transmission-
Jump to: